The photoluminescent properties of CdS clusters of different size in porous glasses
作者： I.K. Doycho , J. Polańska , S.A. Gevelyuk , E. Rysiakiewicz-Pasek , S.A. Zhukov
DOI:
关键词: Wurtzite crystal structure 、 Molecular physics 、 Nanoclusters 、 Porous glass 、 Phase (matter) 、 Materials science 、 Crystallite 、 Excited state 、 Band gap 、 Photoluminescence
摘要: CdS nanoclusters were formed in the porous glass matrix by sequential chemical deposition from liquid-vapor phase and their content was investigated. The room temperature photoluminescence spectra of specimens excited with a 235 nm wavelength had typical narrow peaks at 400 nm. can be explained quantum effects for charge carriers confined inside small-size (radius order several nanometers) clusters. At same time luminescence specimens, but xenon lamp 77 K, ~700 that approximately corresponded to band gap crystalline CdS. possibility crystallites existence follows size distribution voids is confirmed X-ray wurtzite structure. peculiarities observed are energetic diagram configurational space.
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