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Title | Photoluminescence of high optical quality CdSe thin films deposited by close-spaced vacuum sublimation |
Authors |
Hnatenko, Yurii Pavlovych
![]() Gnatenko, Yurii Pavlovych Bukivskyi, Petro Mykolaiovych Bukivskij, Petro Mykolaiovych Faryna, Ivan Oleksandrovych Opanasiuk, Anatolii Serhiiovych ![]() Ivashchenko, Maksym Mykolaiovych ![]() |
ORCID |
http://orcid.org/0000-0002-8173-3948 http://orcid.org/0000-0002-1888-3935 http://orcid.org/0000-0002-4611-0956 |
Keywords |
II–VI films Low-temperature photoluminescence Residual impurity states Point defects Optical quality |
Type | Article |
Date of Issue | 2014 |
URI | http://essuir.sumdu.edu.ua/handle/123456789/37060 |
Publisher | Elsevier |
License | Copyright not evaluated |
Citation | Photoluminescence of high optical quality CdSe thin films deposited by close-spaced vacuum sublimation / Gnatenko Yu. P., Bukivskij P. M., Faryna I. O., Ivashchenko M. M., Opanasyuk A.S. // Journal of Luminescence - 2014, V. 146, P. 174-177 |
Abstract |
Polycrystalline CdSe thin films (d¼0.1–3.0 μm) have been deposited on a glass substrate by means of the
close-spaced vacuum sublimation technique. X-ray diffraction measurements have shown that the films
obtained at Тs>473K have only wurtzite phase. The influence of deposition conditions, inparticular,the
substrate temperature on the photoluminescence(PL) of CdSe films spectra was investigated. This let us study the effect of glass substrate on their optical quality as well as determine the nature and energy structure of the intrinsic defects and residual impurities in the films. The presence in PL spectrum of the most intense sharp donor boundex citon D0X-line for CdSe films obtained at Ts=873K indicates the
n-type conductivity and their high optical quality. Intensive PL bands in the spectral range 1.65–1.74 eV
were also observed, which are associated with the recombination of donor–acceptor pair swith the
participation of the shallow donor and acceptor centers caused by Na(Li) residual impurities. As a result of the study of the PL spectra of CdSe films the optimal temperature conditions of their growth were determined, namely, the substrate temperature Ts=873K and the evaporator temperature Te=973 K.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/37060 |
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