ACTA

Photoluminescence and Photoacoustic Investigations of Beryllium and Magnesium Containing Wide Gap II-VI Mixed Crystals

F. Firszt^a, S. Łęgowski^a, H. Męczyńska^a, B. Sekulska^a, J. Szatkowski^a, J. Zakrzewski^a and W. Paszkowicz^b
^aInstitute of Physics, Grudziądzka 5/7, 87-100 Toruń, Poland
^bInstitute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland

Received: September 15, 1998; revised version March 29, 1999

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Zn_1-xBe_xSe, Cd_1-xMg_xSe and Zn_1-x-yBe_xMg_ySe 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_1-xBe_xSe crystals with different beryllium contents.

DOI: 10.12693/APhysPolA.95.991
PACS numbers: 46.30.Pa, 62.65.+k, 72.20.My, 78.20.Hp, 78.55.Et