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Tytuł:
Fabrication of YSZ coatings on nickel-based alloys by anodic electrophoretic deposition
Autorzy:
Binxia, Yuan
Tianzhong, Chen
Yongzhi, Shang
Haibo, Xue
Min, Li
Powiązania:
https://bibliotekanauki.pl/articles/2204142.pdf
Data publikacji:
2023
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
YSZ coating
anodic electrophoretic deposition
suspension solution
nickel-based alloys
Opis:
In the paper, YSZ coatings were prepared on nickel-based alloy substrates by anodic electrophoretic deposition. The YSZ suspension solution was obtained under stirring and ultrasonic treatment, in which the anhydrous ethanol and acetylacetone were used as the dispersion medium and ammonium polyacrylate was used as the dispersant of the suspension. The effects of different deposition voltage and deposition time on YSZ coating were investigated. Meantime, the microstructure of the coating surface was observed by metallographic microscope. It was found that the high-quality YSZ coating could be obtained by deposition at 60 V for 2–3 min. Finally, the effect of sintering temperature on coating quality was investigated by X-ray diffractometer and scanning electron microscopy. The results showed that the YSZ coating bonded closely with the substrate after sintering at 1200 °C, and the porosity of the YSZ coating increased after sintering.
Źródło:
Polish Journal of Chemical Technology; 2023, 25, 1; 8--11
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On an interval-partitioning scheme
Autorzy:
Neuts, Marcel
Li, Jian-Min
Pearce, Charles
Powiązania:
https://bibliotekanauki.pl/articles/1338794.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
random partitioning
spacings
Opis:
In a recent paper, Neuts, Rauschenberg and Li [10] examined, by computer experimentation, four different procedures to randomly partition the interval [0,1] into m intervals. The present paper presents some new theoretical results on one of the partitioning schemes. That scheme is called Random Interval (RI); it starts with a first random point in [0,1] and places the kth point at random in a subinterval randomly picked from the current k subintervals (1
Źródło:
Applicationes Mathematicae; 1999, 26, 3; 347-355
1233-7234
Pojawia się w:
Applicationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on Airflow Background Noise Suppression for Aeroacoustic Wind Tunnel Testing
Autorzy:
Li, Yuanwen
Li, Min
Feng, Daofang
Yang, Debin
Wei, Long
Powiązania:
https://bibliotekanauki.pl/articles/2141671.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aeroacoustic measurement
acoustic source localization
EEMD; background noise suppression
wind tunnel test.
Opis:
The microphone data collected in aeroacoustic wind tunnel test contains not only desired aeroacoustic signal but also background noise generated by the jet or the valve of the wind tunnel, so the desired aeroacoustic characteristics is difficult to be highlighted due to the low Signal-to-Noise Ratio (SNR). Classical cross spectral matrix removal can only reduce the microphone self-noise, but its effect is limited for jet noise. Therefore, an Airflow Background Noise Suppression method based on the Ensemble Empirical Mode Decomposition (ABNSEEMD) is proposed to eliminate the influence of background noise on aeroacoustic field reconstruction. The new method uses EEMD to adaptively separate the background noise in microphone data, which has good practicability for increasing SNR of aeroacoustic signal. A localization experiment was conducted by using two loudspeakers in wind tunnel with 80 m/s velocity. Results show that proposed method can filter out the background noise more effectively and improve the SNR of the loudspeakers signal compared with spectral subtraction and cepstrum methods. Moreover, the aeroacoustic field produced by a NACA EPPLER 862 STRUT airfoil model was also measured and reconstructed. Delay-and-sum beamforming maps of aeroacoustic source were displayed after the background noise was suppressed, which further demonstrates the proposed method’s advantage.
Źródło:
Archives of Acoustics; 2022, 47, 2; 241-257
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The critical trait of digital entrepreneur: mixed methods research
Autorzy:
Chuang, Li-Min
Lee, Yu-Po
Chang, Yu-Ju
Powiązania:
https://bibliotekanauki.pl/articles/2201960.pdf
Data publikacji:
2023
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
digital entrepreneurship
digital economy
entrepreneurship
entrepreneurs
analytic hierarchy process
AHP
przedsiębiorczość cyfrowa
gospodarka cyfrowa
przedsiębiorczość
przedsiębiorcy
proces hierarchii analitycznej
Opis:
Pioneers of the digital era have invented a different business model and expanded the existence of the digital economy, and the digital entrepreneurship is the beginning of this digital revolution. To explore the key characteristics of digital entrepreneurs, this study is divided into two stages. The first stage conducted a literature review and case study to construct the characteristic elements of the entrepreneurship into a model of digital entrepreneurs. In the second stage, the relative weights of the key characteristics of digital entrepreneurs are understood through an analysis of the AHP questionnaire results. The results show that autonomy and selfdiscipline are keys among the main dimensions of the key characteristics of digital entrepreneurs' entrepreneurship; the secondary dimension of "action power" is key in the main dimension of "autonomy and self-discipline"; the secondary dimension of "business networks" is key in the main dimension of "social capital"; the secondary dimension of "insight" is key in the main dimension of "innovation and breakthrough"; the secondary dimension of "communication ability" is key in the main dimension of "leadership communication".
Źródło:
Acta Innovations; 2023, 46; 5--18
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanical Spectroscopy of Bearing Steel
Spektroskopia mechaniczna stali łożyskowej
Autorzy:
Lu, X.
Li, W.
Jin, M.
Min, N.
Jin, X.
Powiązania:
https://bibliotekanauki.pl/articles/351791.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bearing steel
twin martensite
mechanical spectroscopy
internal friction
Snoek-Köster peak
stal łożyskowa
bliźniacza struktura martenzytu
atomy węgla
spektroskopia mechaniczna
tarcie wewnętrzne
niskotemperaturowe zbocze szczytu Snoek-Köstera
Opis:
This study presents mechanical spectroscopy of bearing steel subjected to different heat treatments. A non-thermally activated maximum, P1, was found at 130°C, in quenched martensitic samples, which were austenitized at 1050°C and 860°C, and presented twin martensite microstructures. It is suggested that the mechanism of the P1 maximum, observed on the low-temperature side of Snoek-Köster peak, is related to the change of defect configurations in twinned martensite assisted with high mobility of the solute carbon atoms under an external harmonic stress field applied during mechanical loss measurements.
W pracy przedstawiono wyniki badań spektroskopii mechanicznej stali łożyskowej poddanej różnej obróbce cieplnej. W hartowanych martenzytycznych próbkach, które były austenityzowane w 1050°C i 860°C, i posiadały bliźniaczą mikrostrukturę martenzytu, występuje nietermicznie aktywowane maksimum P1 przy 130°C. Sugeruje się, że mechanizm maksimum P1, które występuje na niskotemperaturowym zboczu piku Snoek-Köstera, związane jest ze zmianą konfiguracji defektów w bliźniaczym martenzycie, przy wysokiej ruchliwości atomów węgla. Maksimum P1 ujawnia się pod wpływem działania harmonicznie zmiennego zewnętrznego pola naprężeń przyłożonego do próbki w trakcie badań metodą spektroskopii mechanicznej.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 3A; 2085-2091
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental Investigation Of Segregation Of Carbon Atoms Due To Sub-Zero Cryogenic Treatment In Cold Work Tool Steel By Mechanical Spectroscopy And Atom Probe Tomography
Doświadczalne badania segregacji atomów węgla w stali narzędziowej do pracy na zimno po obróbce kriogenicznej metodą spektroskopii mechanicznej i tomografii atomowej
Autorzy:
Min, N.
Li, H. M.
Xie, C.
Wu, X. C.
Powiązania:
https://bibliotekanauki.pl/articles/351716.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cryogenic treatment
isothermal martensite
atom probe tomography
mechanical spectroscopy
Cottrell atmosphere
obróbka kriogeniczna
izotermiczny martenzyt
tomografia atomowa
spektroskopia mechaniczna
atmosfera Cottrella
Opis:
In this work, we present mechanical spectroscopy of cold work tool steel subjected to sub-zero cryogenic soaking treatment to reveal the carbon segregation and the subsequent carbides refinement. The maximum of Snoek-Köster (SK) peak height was obtained in the sample subjected to soaking 1h at −130°C cryogenic treatment. The SK peak height is reduced with prolonging the soaking time. The results indicate that an increase in the height of SK peak is connected with an increase in dislocation density and the number of segregated carbon atoms in the vicinity of dislocations or twin planes after martensite transformation at −130°C which is confirmed by corresponding TEM and atom probe tomography measurement. Hence, it is suggested that the isothermal martensite, formed during the cryogenic soaking treatment decreases (APT) the height of SK peak.
W pracy przedstawiono wyniki spektroskopii mechanicznej stali narzędziowej do pracy na zimno poddanej obróbce kriogenicznej w celu odsłonięcia segregacji węgla i późniejszego tworzenia węglików. Dzięki połączeniu transmisyjnej mikroskopii elektronowej (TEM) i tomografii atomowej (APT) uzyskano maksymalny pik Snoek-Köstera (SK) w próbce poddanej obróbce kriogenicznej przez 1 godzinę w −130°C. Wysokość piku SK obniża się wraz z wydłużeniem czasu obróbki. Wyniki wskazują, że zwiększenie wysokości piku SK jest połączone ze wzrostem gęstości dyslokacji i liczby segregowanych atomów węgla w sąsiedztwie dyslokacji lub płaszczyzn bliźniaczych po przemianie martenzytycznej w -130°C, co potwierdzone jest odpowiednimi pomiarami TEM oraz APT. W związku z tym proponuje się, że izotermiczny martenzyt powstały podczas obróbki kriogenicznej zmniejsza wysokość piku SK.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 2A; 1109-1113
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Work stress and the risk of recurrent coronary heart disease events: A systematic review and meta-analysis
Autorzy:
Li, Jian
Zhang, Min
Loerbroks, Adrian
Angerer, Peter
Siegrist, Johannes
Powiązania:
https://bibliotekanauki.pl/articles/2176999.pdf
Data publikacji:
2015-02-24
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
work stress
recurrence
coronary heart disease
meta-analysis
epidemiology
prospective studies
Opis:
Though much evidence indicates that work stress increases the risk of incident of coronary heart disease (CHD), little is known about the role of work stress in the development of recurrent CHD events. The objective of this study was to review and synthesize the existing epidemiological evidence on whether work stress increases the risk of recurrent CHD events in patients with the first CHD. A systematic literature search in the PubMed database (January 1990 – December 2013) for prospective studies was performed. Inclusion criteria included: peer-reviewed English papers with original data, studies with substantial follow-up (> 3 years), end points defined as cardiac death or nonfatal myocardial infarction, as well as work stress assessed with reliable and valid instruments. Meta-analysis using random-effects modeling was conducted in order to synthesize the observed effects across the studies. Five papers derived from 4 prospective studies conducted in Sweden and Canada were included in this systematic review. The measurement of work stress was based on the Demand- Control model (4 papers) or the Effort-Reward Imbalance model (1 paper). According to the estimation by meta-analysis based on 4 papers, a significant effect of work stress on the risk of recurrent CHD events (hazard ratio: 1.65, 95% confidence interval: 1.23–2.22) was observed. Our findings suggest that, in patients with the first CHD, work stress is associated with an increased relative risk of recurrent CHD events by 65%. Due to the limited literature, more well-designed prospective research is needed to examine this association, in particular, from other than western regions of the world.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2015, 28, 1; 8-19
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Facile Synthesis and Characterization of Novel CdS/BiOI Heterojunctions with Enhanced Visible-Light Photocatalytic Performances
Autorzy:
Fang, Shanshan
Lu, Min
Zhou, Man
Li, Zhongyu
Xu, Song
Peng, Yanyan
Li, Qinchi
Lu, Dayong
Powiązania:
https://bibliotekanauki.pl/articles/1030343.pdf
Data publikacji:
2017-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
CdS/BiOI heterojunctions
visible-light photocatalyst
photocatalytic activity
nanocomposites
Opis:
Novel CdS/BiOI heterojunction photocatalysts were successfully prepared by facile method. The as-prepared samples were characterized by transmission electron microscopy, field-emission scanning electron microscopy, X-ray diffraction, the Raman spectroscopy, UV-vis diffuse reflectance spectra, the Fourier transform infrared spectra, and photoluminescence. It was found that CdS nanoparticles were uniformly distributed on the surface of BiOI microspheres. The photodegradation tests showed that the photocatalytic efficiency was increased at first and then decreased when further increasing CdS content in the nanocomposites. The highest activity was obtained by 3%-CdS/BiOI nanocomposites. The enhanced photocatalytic performances were attributed to the matched band potentials of CdS and BiOI, which resulted in the efficient separation of photogenerated electron-hole pairs. Based on the experimental results, a reasonable photocatalytic mechanism of CdS/BiOI photocatalysts was also proposed.
Źródło:
Acta Physica Polonica A; 2017, 131, 2; 263-270
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pore structure and surface properties of diatomite with mechanical grinding and its influence on humidity control
Autorzy:
Hu, Zhibo
Zheng, Shuilin
Li, Jinyu
Zhang, Shuaiqian
Liu, Min
Wang, Zhicheng
Li, Jiaxin
Sun, Hongjuan
Powiązania:
https://bibliotekanauki.pl/articles/2175445.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
diatomite
mechanical grinding
pore structure
surface properties
humidity control performance
Opis:
Mechanical grinding (MG) is an effective method to regulate the pore structure and surface properties of mineral material. Grinding diatomite samples were prepared by horizontal sander under different grinding time. The pore structure and surface properties of grinding samples were characterized systematically by the particle size analysis, low temperature nitrogen adsorption, MIP, fractal theory, XRD, SEM, TEM, FTIR and surface hydroxyl density analysis. The humidity control performance (HCP) of grinding diatomite was tested under different temperature and relative humidity. The relationship among pore structure, surface properties and HCP was analyzed. The results show that macroporous is more easily damaged by mechanical force than mesoporous, and the internal blind holes structure can be opened. The HCP of diatomite is positively correlated with the specific surface area, mesoporous volume, the inhomogeneity of macroporous structure and the number of hydroxyl groups, while negatively correlated with the proportion of macroporous volume.
Źródło:
Physicochemical Problems of Mineral Processing; 2022, 58, 6; art. no. 153509
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High-grade mutant OmpF induces decreased bacterial survival rate
Autorzy:
Zhao, Zhi-ping
Liu, Ting-ting
Zhang, Li
Luo, Min
Nie, Xin
Li, Zai-xin
Pan, Yu
Powiązania:
https://bibliotekanauki.pl/articles/1039304.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
antibiotic resistance
mOmpF
OmpF
outer membrane protein
bacterial survival rate
Opis:
OmpF plays very important roles in the influx of antibiotics and bacterial survival in the presence of antibiotics. However, high-grade mutant OmpF and its function in decreasing bacterial survival rate have not been reported to date. In the present study, we cloned a high-grade mutant OmpF (mOmpF) and sequence analysis suggested that over 45 percent of the DNA sequence was significantly mutated, leading to dramatic changes in over 55 percent of the amino acid sequence. mOmpF protein was successfully expressed. When grown in the presence of antibiotic, the bacterial survival rate decreased and the antibiotic inhibition zone became larger with the increase of the mOmpF. It was concluded that concentration of high-grade mutant mOmpF dramatically influenced the bacterial survival rate. The study presented here may provide insights into better understanding of the relationships between structure and function of OmpF.
Źródło:
Acta Biochimica Polonica; 2014, 61, 2; 369-373
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cracking control technique for continuous steel-concrete composite girders under negative bending moment
Autorzy:
Cai, Min
Li, Wenjie
Wan, Zhiyong
Sheng, Jianjun
Tan, Juliang
Ma, Chao
Powiązania:
https://bibliotekanauki.pl/articles/27312132.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
dźwigar ciągły
dźwigar zespolony
dźwigar stalowo-betonowy
odporność na pękanie
wzmocnienie
beton ultra wysokiej wartości
continuous girder
steel-concrete composite girder
hogging moment
cracking control
strengthening
ultra high performance concrete
Opis:
Continuous steel-concrete composite girder can fully utilize material strength and possess large spanning ability for bridge constructions. However, the weak cracking resistance at the negative bending moment region of the girder seriously harms its durability and serviceability. This paper investigates practical techniques to improve the cracking performance of continuous steel-concrete composite girders subjected to hogging moment.Areal continuous girderwas selected as the background bridge and introduced for numerical analysis. Modeling results show that under the serviceability limit state, the principle stress of concrete slabs near the middle piers of the bridgewas far beyond the allowable material strength, producing a maximum tensile stress of 10.0 MPa. Approaches for strengthening concrete decks at the negative moment region were developed and the effectiveness of each approach was assessed by examing the tensile stress in the slabs. Results indicate that the temporary counterweight approach decreased the maximum tensile stress in concrete slabs by 22%. Due to concrete shrinkage and creep, more than 65% of the prestressed compressive stresses in concrete slabs were finally dispersed to the steel beams. A thin ultra-high performance concrete (UHPC) overlay at the hogging moment region effectively increased the cracking resistance of the slabs, and practical engineering results convicted the applicability of the UHPC technique.
Źródło:
Archives of Civil Engineering; 2023, 69, 3; 239--251
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on synthesis and photoelectric properties of AgInS2 quantum dots
Autorzy:
Yuan, Binxia
Luo, Zige
Sun, Yongjun
Cao, Sheng
Cao, Lan
Li, Min
Powiązania:
https://bibliotekanauki.pl/articles/2106479.pdf
Data publikacji:
2022
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
AgInS
Quantum dots
Optical properties
Photocatalytic hydrogen production
Opis:
AgInS2 Quantum dots (AIS QDs) have high quantum yield and catalytic performance, which is promising materials in photo-catalytic and optoelectronic fields. In the paper, it adopted a simple and non-toxic method to synthesize AIS QDs. The effect of reaction temperature on the growth mechanism, optical and physical properties of AIS had been extensively investigated by using L-cysteine as the sulfur source, and their application in catalytic hydrogen production was also studied. The results demonstrated that the fluorescence properties will be quenched with the increase of temperature, indicating that the separation speed of electron hole pairs of samples obtained at higher temperature was faster. Meantime, the electron transport capacity and the photocurrent had also improved with the increase of reaction temperature. Finally, the sample obtained at 100 oC had higher hydrogen production rate.
Źródło:
Polish Journal of Chemical Technology; 2022, 24, 2; 21--26
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Amino acid substitutions of His296 alter the catalytic properties of Zymomonas mobilis 10232 levansucrase
Autorzy:
Li, Shu
Chen, Ming
Li, Gang
Yan, Yong
Yu, Hai
Zhan, Yu
Peng, Zi
Wang, Jin
Lin, Min
Powiązania:
https://bibliotekanauki.pl/articles/1040841.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Zymomonas mobilis
His296
levansucrase
levan
transfructosylation activity
hydrolysis activity
Opis:
His296 of Zymomonas mobilis levansucrase (EC 2.4.1.10) is crucial for the catalysis of the transfructosylation reaction. The three-dimensional structures of levansucrases revealed the His296 is involved in the substrate recognition and binding. In this study, nine mutants were created by site-directed mutagenesis, in which His296 was substituted with amino acids of different polarity, charge and length. The substitutions of His296 with Arg or Trp retained partial hydrolysis and transfructosylation activities. The positively charged Lys substitution resulted in a 2.5-fold increase of sucrose hydrolysis. Substitutions with short (Cys or Ser), negatively charged (Glu) or polar (Tyr) amino acids virtually abolished both the activities. Analysis of transfructosylation products indicated that the mutants synthesized different oligosaccharides, suggesting that amino acid substitutions of His296 strongly affected both the enzyme activity and transfructosylation products.
Źródło:
Acta Biochimica Polonica; 2008, 55, 1; 201-206
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Preheating Temperature on Microstructure and Optical Properties of ZnO Thin Films Prepared by Sol-Gel Spin Coating Technique
Autorzy:
Ji, Qiang-min
Wang, Ya-li
Gao, Xiao-yong
Gao, Hui
Zhai, Yao-fei
Powiązania:
https://bibliotekanauki.pl/articles/1398971.pdf
Data publikacji:
2016-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.55.Et
78.55.-m
Opis:
Highly-oriented ZnO thin films prepared by using low-cost technique such as sol-gel technique are of much importance to ZnO-based white light-emitting diodes. The chose of proper preheating temperature in sol-gel technique is still critical for highly-oriented ZnO thin film so far. The mechanisms for the preheating in the formation of ZnO thin film and for the reactions involved in the sol solution have not been clearly stated yet. Thus, in this work, the highly-oriented ZnO thin films were prepared on glass substrates by using sol-gel spin-coating technique. The sol solution was prepared by using the two-step method rather than usual one-step method, which facilitates the understanding of the mechanism for the reactions involved in the sol solution. The effect of the preheating temperature on the microstructure and the optical properties of the films were in particular investigated. The mechanisms for the preheating in the formation of the films and for the reactions involved in the sol solution prepared by the two-step method were also proposed in terms of the experimental results. The preheating not only enhances the volatilization of the solvent 2-methoxyethanol and the decomposition of the residual organic species, but also results into the formation of small number of ZnO particles. The preheating temperature of 300°C is most favorable for the highly-oriented ZnO thin film. Increasing the preheating temperature results into the blue shift of the absorption edges of the films. This can be explained by using the quantum-size effect. The photoluminescence spectra of the films show an UV emission at the near-band edge and a broad green-yellow emission at 470-620 nm. The former is closely related to the excitons, while the latter is to the intrinsic defect species in the film.
Źródło:
Acta Physica Polonica A; 2016, 129, 6; 1191-1196
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
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