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Wyszukujesz frazę "high-k" wg kryterium: Temat


Wyświetlanie 1-12 z 12
Tytuł:
Comparison of gate leakage current components in metal-insulator-semiconductor structures with high-k gate dielectris
Autorzy:
Janik, T.
Jakubowski, A.
Majkusiak, B.
Korwin-Pawłowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/308423.pdf
Data publikacji:
2001
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
MIS structures
ultrathin dielectrics
high-k dielectrics
Opis:
Numerical simulations of the gate leakage current in metal-insulator-semiconductor (MIS) structures based on the transfer matrix approach were carried out. They show contribution of different components of this current in MIS structures with best known high-k dielectrics such as Ta2O5 and TiO2. The comparison of the gate leakage current in MIS structures with SiO2 layer as well Ta2O5 and TiO2 layers is presented as well. Additionally, the minimum Si electron affinity to a gate dielectric which allows to preserve given level of the gate leakage current is proposed.
Źródło:
Journal of Telecommunications and Information Technology; 2001, 1; 65-69
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Glaucony from the condensed Lower-Middle Jurassic deposits of the Križna Unit, Western Tatra Mountains, Poland
Autorzy:
Jach, R.
Starzec, K.
Powiązania:
https://bibliotekanauki.pl/articles/191514.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
High-Al autochthonous glaucony
K-Ar dating
Carpathians
Tethys
Opis:
Lower-Middle Jurassic glaucony-bearing deposits crop out in the Polish part of the Križna Unit in the Western Tatra Mts. These deposits, up to 20 cm thick, consist of glaucony-rich marls and limestones. The glaucony grains constitute up to 30% volume of the deposits. They represent an evolved stage of glauconitization since they contain more than 7% K2O. The content of Al2O3 is high (up to 19.97%, average 16.98%) while the content of Fe2O3 is low (not more than 23.48%, average 12.84%). These features are interpreted as a product of diagenetic processes. The glaucony-bearing deposits were formed at an upper bathyal depth and their rate of deposition was very low, what allowed long-lasting evolution of the glaucony grains. The K-Ar age of the glaucony grains is much younger than the biostratigraphic age of the studied section. The lowering of the K-Ar dates is interpreted as a result of loss of radiogenic Ar from the lattice of the glaucony.
Źródło:
Annales Societatis Geologorum Poloniae; 2003, 73, No 3; 183-192
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gate dielectrics: process integration issues and electrical properties
Autorzy:
Schwalke, U.
Powiązania:
https://bibliotekanauki.pl/articles/308978.pdf
Data publikacji:
2005
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
high-k dielectrics
CMOS
Pr2O3
process integration
resist removal
wet chemical cleaning
wet chemical etching
RIE
Opis:
In this work we report on the process integration of crystalline praseodymium oxide (Pr2O3) high-k gate dielectric. Key process steps that are compatible with the high-k material have been developed and were applied for realisation of MOS structures. For the first time Pr2O3 has been integrated successfully in a conventional MOS process with n+ poly-silicon gate electrode. The electrical properties of Pr2O3 MOS capacitors are presented and discussed.
Źródło:
Journal of Telecommunications and Information Technology; 2005, 1; 7-10
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Challenges for 10 nm MOSFET process integration
Autorzy:
Östling, M.
Malm, B. G.
Haartman, M.
Hallstedt, J.
Zhang, Z.
Hellström, P. E.
Zhang, S.
Powiązania:
https://bibliotekanauki.pl/articles/309004.pdf
Data publikacji:
2007
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
sstrained silicon
silicon-germanium
silicon-on-insulator (SOI)
high-k dielectrics
hafnium oxide
nanowire
low frequency noise
mobility
metal gate
Opis:
An overview of critical integration issues for future generation MOSFETs towards 10 nm gate length is presented. Novel materials and innovative structures are discussed. The need for high-k gate dielectrics and a metal gate electrode is discussed. Different techniques for strain-enhanced mobility are discussed. As an example, ultra thin body SOI devices with high mobility SiGe channels are demonstrated.
Źródło:
Journal of Telecommunications and Information Technology; 2007, 2; 25-32
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of MOSFETs with crystalline high-k gate-dielectrics: device simulation and experimental data
Autorzy:
Zaunert, F.
Endres, R.
Stefanov, Y.
Schwalke, U.
Powiązania:
https://bibliotekanauki.pl/articles/308785.pdf
Data publikacji:
2007
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
crystalline high-k gate dielectric
rare-earth oxide
praseodymium oxide
gadolinium oxide
damascene metal gate
CMP
CMOS process
TSUPREM4
MEDICI
interface state density
carrier mobility
remote coulomb scattering
Opis:
The evaluation of the world's first MOSFETs with epitaxially-grown rare-earth high-k gate dielectrics is the main issue of this work. Electrical device characterization has been performed on MOSFETs with high-k gate oxides as well as their reference counterparts with silicon dioxide gate dielectric. In addition, by means of technology simulation with TSUPREM4, models of these devices are established. Current-voltage characteristics and parameter extraction on the simulated structures is conducted with the device simulator MEDICI. Measured and simulated device characteristics are presented and the impact of interface state and fixed charge densities is discussed. Device parameters of high-k devices fabricated with standard poly-silicon gate and replacement metal gate process are compared.
Źródło:
Journal of Telecommunications and Information Technology; 2007, 2; 78-85
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review and perspective of high-k dielectrics on silicon
Autorzy:
Hall, S.
Buiu, O.
Mitrovic, I. Z.
Lu, Y.
Davey, W. M.
Powiązania:
https://bibliotekanauki.pl/articles/309000.pdf
Data publikacji:
2007
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
high-k dielectrics
dielectric constant
hafnia
interfacial layer
aluminates
silicates
Opis:
The paper reviews recent work in the area of high-k dielectrics for application as the gate oxide in advanced MOSFETs. Following a review of relevant dielectric physics, we discuss challenges and issues relating to characterization of the dielectrics, which are compounded by electron trapping phenomena in the microsecond regime. Nearly all practical methods of preparation result in a thin interfacial layer generally of the form SiOx or a mixed oxide between Si and the high-k so that the extraction of the dielectric constant is complicated and values must be qualified by error analysis. The discussion is initially focussed on HfO2 but recognizing the propensity for crystallization of that material at modest temperatures, we discuss and review also, hafnia silicates and aluminates which have the potential for integration into a full CMOS process. The paper is concluded with a perspective on material contenders for the "end of road map" at the 22 nm node.
Źródło:
Journal of Telecommunications and Information Technology; 2007, 2; 33-43
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charging Phenomena at the Interface Between High-k Dielectrics and SiOx Interlayers
Autorzy:
Engström, O.
Raeissi, B.
Piscator, J.
Mitrovic, I. Z.
Hall, S.
Gottlob, H. D. B.
Schmidt, M.
Hurley, P. K.
Cherkaoui, K.
Powiązania:
https://bibliotekanauki.pl/articles/308138.pdf
Data publikacji:
2010
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
defects
dielectrics
high-k
metal oxide semiconductor
Opis:
The transition regions of GdSiO/SiOx and HfO2/ SiOx interfaces have been studied with the high-k layers deposited on silicon substrates. The existence of transition regions was verified by medium energy ion scattering (MEIS) data and transmission electron microscopy (TEM). From measurements of thermally stimulated current (TSC), electron states were found in the transition region of the HfO2/SiOx structures, exhibiting instability attributed to the flexible structural molecular network expected to surround the trap volumes. The investigations were focused especially on whether the trap states belong to an agglomeration consisting of a single charge polarity or of a dipole constellation. We found that flat-band voltage shifts of MOS structures, that reach constant values for increasing oxide thickness, cannot be taken as unique evidence for the existence of dipole layers.
Źródło:
Journal of Telecommunications and Information Technology; 2010, 1; 10-19
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling the characteristics of high-k HfO2-Ta2O5 capacitor in Verilog-A
Autorzy:
Angelov, G. V.
Powiązania:
https://bibliotekanauki.pl/articles/398142.pdf
Data publikacji:
2011
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
modelowanie elementów elektronicznych
model kompaktowy
symulacja obwodu
dielektryk bramkowy o wysokiej przenikalności elektrycznej
Verilog-A
Spectre
device modeling
compact models
circuit simulation
high-k gate dielectric
Opis:
A circuit simulation model of a MOS capacitor with high-k HfO2-Ta2O5 mixed layer is developed and coded in Verilog-A hardware description language. Model equations are based on the BSIM3v3 model core. Capacitance-voltage (C-V) and current-voltage (I-V) characteristics are simulated in Spectre circuit simulator within Cadence CAD system and validated against experimental measurements of the HfO2-Ta2O5 slack structure.
Źródło:
International Journal of Microelectronics and Computer Science; 2011, 2, 3; 105-112
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface Potential Modeling of a High-k HfO2-Ta2O5 Capacitor in Verilog-A
Autorzy:
Angelov, G. V.
Powiązania:
https://bibliotekanauki.pl/articles/397997.pdf
Data publikacji:
2012
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
modelowanie elementów elektronicznych
model kompaktowy
PSP
symulacja obwodu
dielektryk bramkowy o wysokiej przenikalności elektrycznej
Verilog-A
Spectre
device modeling
compact models
circuit simulation
high-k gate dielectric
Opis:
A compact model of a high-k HfO2-Ta2O5 mixed layer capacitor stack is developed in Matlab. Model equations are based on the surface potential PSP model. After fitting the C-V characteristics in Matlab the model is coded in Verilog-A hardware description language and it is implemented as external library in Spectre circuit simulator within Cadence CAD system. The results are validated against the experimental measurements of the HfO2-Ta2O5 stack structure.
Źródło:
International Journal of Microelectronics and Computer Science; 2012, 3, 3; 111-118
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Properties of thin films of high-k oxides grown by atomic layer deposition at low temperature for electronic applications
Autorzy:
Gieraltowska, S
Wachnicki, Ł
Witkowski, B S
Godlewski, M
Guziewicz, E
Powiązania:
https://bibliotekanauki.pl/articles/173591.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
high-k oxides
composite layers
atomic layer deposition
transparent electronics
zinc oxide
Opis:
Thin films of high-k oxides are presently used in semiconductor industry as gate dielectrics. In this work, we present the comparison of structural, morphological and electrical properties of binary and composite layers of high-k oxides that include hafnium dioxide (HfO2), aluminum oxide (Al2O3) and zirconium dioxide (ZrO2). We deposit thin films of high-k oxides using atomic layer deposition (ALD) and low growth temperature (60–240 °C). Optimal technological growth parameters were selected for the maximum smoothness, amorphous microstructure, low leakage current, high dielectric strength of dielectric thin films, required for gate applications. High quality of the layers is confirmed by their introduction to test electronic structures, such as thin film capacitors, transparent thin film capacitors and transparent thin film transistors. In the latter structure we use semiconductor layers of zinc oxide (ZnO) and insulating layers of high-k oxide grown by the ALD technique at low temperature (no more than 100 °C).
Źródło:
Optica Applicata; 2013, 43, 1; 17-25
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inicjalizacja segmentacji k-means uwzględniająca rozkład gęstości pikseli
Autorzy:
Świta, R.
Suszyński, Z.
Powiązania:
https://bibliotekanauki.pl/articles/118366.pdf
Data publikacji:
2014
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
FA
KKZ
k-means
kmeans++
segmentacja
k-means ++
segmentation
High Density
Opis:
Artykuł przedstawia modyfikację inicjalizacji KKZ algorytmu k-means, uwzględniającą, oprócz wzajemnych odległości środków segmentów, również rozkład gęstości pikseli. Funkcja gęstości piksela jest sumą odwrotności odległości piksela od pozostałych i jest poddawana oszacowaniu na podstawie odległości piksela od wartości średniej i wariancji wartości pikseli. W eksperymentach segmentacji podlegały cztery różne sekwencje obrazów termicznych uzyskanych metodą termografii aktywnej. Pomimo dodatkowych obliczeń podczas inicjalizacji, metoda wykazała szybszą zbieżność algorytmu z czasami bardzo podobnymi do inicjalizacji KKZ, ale mniejszym błędem końcowym segmentacji.
This article presents a modification for the KKZ initialization of the k-means segmentation algorithm, which, in addition to the mutual distance of segments, takes into account the density of pixels. Pixel density is expressed asa sum of the inverse of the pixel’s distance to the other pixels and is subjected to estimation based on the distance from the mean and variance of the pixel values. In the experiments, four different sequences of thermal images were used, obtained using active thermography. Despite the additional calculations during initialization, method showed a faster convergence of the algorithm, with processing times very similar to the KKZ initialization, but with a lower final segmentation error.
Źródło:
Zeszyty Naukowe Wydziału Elektroniki i Informatyki Politechniki Koszalińskiej; 2014, 6; 89-98
1897-7421
Pojawia się w:
Zeszyty Naukowe Wydziału Elektroniki i Informatyki Politechniki Koszalińskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of Al2O3/4H-SiC and Al2O3/SiO2/4H-SiC MOS structures
Autorzy:
Taube, A.
Guziewicz, M.
Kosiel, K.
Gołaszewska-Malec, K.
Król, K.
Kruszka, R.
Kamińska, E.
Piotrowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/953063.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminum oxide
MOS
silicon carbide
4H-SiC
high-K dielectrics
tlenek glinu
węglik krzemu
dielektryki high-k
Opis:
The paper presents the results of characterization of MOS structures with aluminum oxide layer deposited by ALD method on silicon carbide substrates. The effect of the application of thin SiO2 buffer layer on the electrical properties of the MOS structures with Al2O3 layer has been examined. Critical electric field values at the level of 7.5–8 MV/cm were obtained. The use of 5 nm thick SiO2 buffer layer caused a decrease in the leakage current of the gate by more than two decade of magnitude. Evaluated density of trap states near the conduction band of silicon carbide in Al2O3/4H-SiC MOS is about of 1×1013 eV−1cm−2. In contrast, the density of the trap states in the Al2O3/SiO2/4H-SiC structure is lower about of one decade of magnitude i.e. 1×1012 eV−1cm−2. A remarkable change in the MOS structure is also a decrease of density of electron traps located deeply in the 4H-SiC conduction band below detection limit due to using of the SiO2 buffer layer.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 3; 537-551
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-12 z 12

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