不同表面处理的多晶ZnSe薄膜的光致发光光谱的温度行为

IF 3.9 4区 物理与天体物理 0 OPTICS
I. Abbasov, M. Musayev, J. Huseynov, M. Kostyrko, G. Eyyubov, D. Askerov
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引用次数: 1

摘要

我们给出了在12-300 K温度范围内,在化学气相沉积ZnSe薄膜的抛光和未抛光表面,在正常入射激发辐射的情况下获得的光致发光光谱。利用波长为λex = 325 nm的连续波He-Cd激光器(即在光子能量为hvex > Eg的条件下)或λex = 532 nm的半导体激光器(即hvex < Eg)激发发光。结果表明,在12-80 K范围内,两种情况下检测到的绿色光致发光带的强度、光谱位置和半宽度的温度依赖性是非常不同的。然而,当温度升高到180k时,它们的行为变得非常接近。最后,上述光谱参数在180 ~ 300 K范围内基本一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Temperature behaviour of the photoluminescence spectra of polycrystalline ZnSe films with different surface treatment
We present the photoluminescence spectra obtained in the case of normal incidence of exciting radiation at both polished and unpolished surfaces of chemicalvapour deposited ZnSe films in the temperature range 12–300 K. The luminescence has been excited using either a continuous-wave He–Cd laser with the wavelength λex = 325 nm (i.e., under the condition hvex > Eg for the photon energy) or a semiconductor laser with λex = 532 nm (i.e., hvex < Eg). We show that the temperature dependences of intensity, spectral position and half-width of a green photoluminescence band detected in the both alternative cases are very different in the region 12–80 K. However, their behaviours become very close to each other when the temperature increases up to 180 K. Finally, the above spectral parameters are almost the same in the region 180–300 K.
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来源期刊
CiteScore
9.90
自引率
0.00%
发文量
20
审稿时长
>12 weeks
期刊介绍: “Ukrainian Journal of Physical Optics” contains original and review articles in the fields of crystal optics, piezo-, electro-, magneto- and acoustooptics, optical properties of solids and liquids in the course of phase transitions, nonlinear optics, holography, singular optics, laser physics, spectroscopy, biooptics, physical principles of operation of optoelectronic devices and systems, which need rapid publication. The journal was founded in 2000 by the Institute of Physical Optics of the Ministry of Education and Science of Ukraine.
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