Autor: Zakrzewski, W. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Luminescence Quantum Efficiency of Mn$\text{}^{2+}$ States in ZnSe:Mn as Studied by means of Photoacoustic Spectroscopy
Autorzy:: Męczyńska, H.
Łęgowski, S.
Dąbrowska, W.
Popielarski, M.
Ogielski, Z.
Zakrzewski, J.
Powiązania:: https://bibliotekanauki.pl/articles/1929770.pdf
Data publikacji:: 1993-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 43.85.+f
62.65.+k
78.20.Hp
Opis:: The photoacoustic spectroscopy with a piezoelectric transducer was employed to determined the quantum efficiency for low Mn concentration in ZnSe monocrystals. The photoacoustic spectra were measured using the continuous wave excitation and nanosecond pulse method.
Źródło:: Acta Physica Polonica A; 1993, 84, 4; 823-825
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Photoluminescence and Photoacoustic Investigations of Beryllium and Magnesium Containing Wide Gap II-VI Mixed Crystals
Autorzy:: Firszt, F.
Łęgowski, S.
Męczyńska, H.
Sekulska, B.
Szatkowski, J.
Zakrzewski, J.
Paszkowicz, W.
Powiązania:: https://bibliotekanauki.pl/articles/2010957.pdf
Data publikacji:: 1999-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 46.30.Pa
62.65.+k
72.20.My
78.20.Hp
78.55.Et
Opis:: Zn$\text{}_{1-x}$Be$\text{}_{x}$Se, Cd$\text{}_{1-x}$Mg$\text{}_{x}$Se and Zn$\text{}_{1-x-y}$Be$\text{}_{x}$Mg$\text{}_{y}$Se mixed crystals grown from the melt with different concentrations of Be and Mg have been characterized by photoluminescence and photoacoustic methods. An increase in band gap energy with increasing Be and Mg contents was observed. The photoacoustic spectroscopy was also employed for evaluation of thermal diffusivity of mixed Zn$\text{}_{1-x}$Be$\text{}_{x}$Se crystals with different beryllium contents.
Źródło:: Acta Physica Polonica A; 1999, 95, 6; 991-996
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Photoacoustic Investigation of Absorption Edge of Cd$\text{}_{1-x}$Mg$\text{}_{x}$Se Mixed Crystals
Autorzy:: Firszt, F.
Łęgowski, S.
Męczyńska, H.
Sekulska, B.
Szatkowski, J.
Zakrzewski, J.
Paszkowicz, W.
Powiązania:: https://bibliotekanauki.pl/articles/1968082.pdf
Data publikacji:: 1997-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 62.65.+k
78.20.Hp
78.55.Et
Opis:: The Cd$\text{}_{1-x}$Mg$\text{}_{x}$Se crystals were grown by modified Bridgman method for x ranging from 0 to 0.44. The photoacoustic spectroscopy was employed for evaluation of the band gaps of series Cd$\text{}_{1-x}$Mg$\text{}_{x}$Se mixed crystals with different composition. The photoacoustic spectra were measured at 300 K and 90 K using continuous wave excitation in the range from 400 nm to 800 nm. The increase in the band-gap energy with increasing Mg content is observed. The photoacoustic results are compared with photoluminescence and transmission spectra.
Źródło:: Acta Physica Polonica A; 1997, 92, 4; 749-752
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Optical and Structural Properties of Zn$\text{}_{1-x}$Be$\text{}_{x}$Se Mixed Crystals
Autorzy:: Firszt, F.
Łęgowski, S.
Męczyńska, H.
Szatkowski, J.
Zakrzewski, J.
Paszkowicz, W.
Domagała, J.
Marczak, M.
Powiązania:: https://bibliotekanauki.pl/articles/1969072.pdf
Data publikacji:: 1998-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.55.Et
78.20.-e
62.65.+k
Opis:: Optical and structural properties of Zn$\text{}_{1-x}$Be$\text{}_{x}$Se bulk crystals in the range of composition 0 ≤ x ≤ 0.41 have been studied. These crystals were grown by Bridgman method under an argon overpressure. Transmission, absorption, photoluminescence and photoacoustic spectra as a function of composition were investigated. It has been found that the crystal structure is of sphalerite type. The crystal quality increases when the crystallization process of the same boule is performed more than once. In the investigated composition range the lattice constant decreases and the energy gap increases with increasing beryllium content. From photoluminescence measurements the excitonic energy gap about 3.64 eV at 40 K was estimated for the highest obtained Be concentration (x=0.41).
Źródło:: Acta Physica Polonica A; 1998, 94, 2; 309-312
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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