High temperature optical absorption edge of CdTe single crystal

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10288359" target="_blank" >RIV/00216208:11320/14:10288359 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.4895494" target="_blank" >http://dx.doi.org/10.1063/1.4895494</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.4895494" target="_blank" >10.1063/1.4895494</a>

Result language
angličtina
Original language name
High temperature optical absorption edge of CdTe single crystal
Original language description
The optical absorption edge of bulk CdTe single crystal was measured by infrared transmission under saturated Cd pressure in the temperature interval 295-1223 K. The absorption coefficient was directly determined up to the value of 100 cm(-1). For highervalues, it was estimated by extrapolating the spectra according to the Urbach exponential rule. It was observed that the common temperature-independent intersection of extrapolated Urbach absorption edge, the "Urbach focus," does not exist in CdTe. Thetemperature dependence of band-gap energy E-g defined by E-g(300 K) = 1.518 eV and dE(g)/dT = - 4.4 x 10(-4) eV/K was established, postulating linear temperature dependence of E-g by fitting the temperature dependent absorption coefficient at the band edge alpha(g)(T) = 6600 - 4T (K) (cm(-1)).
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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