Synthesis of single-crystal CdS microbelts using a modified thermal evaporation method and their photoluminescence

Guozhen Shen*, Jung Hee Cho, Jin Kyoung Yoo, Gyu Chul Yi, Cheol Jin Lee

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

126 引用 (Scopus)

摘要

Large-scale synthesis of single-crystal CdS microbelts was achieved by a modified thermal evaporation method, in which an adiabatic layer was used to provide abrupt temperature decrease and high gas concentration for the rnicrobelt growth. The synthesized CdS microbelts were usually several micrometers in width, 70 nm in thickness, and tens to several hundred micrometers in length. Studies found that the adiabatic layer has great influence on the formation of CdS microbelts. Room-temperature photoluminescence indicated the disappearance of the emission at 1.77 eV, the appearance of an emission at 2.07 eV, and also the enhancement of the emission band at 2.38 eV, whose position shifted toward the blue region compared with conventional narrow CdS nanobelts. A possible growth mechanism of the CdS microbelts was briefly discussed.

源语言英语
页(从-至)9294-9298
页数5
期刊Journal of Physical Chemistry B
109
19
DOI
出版状态已出版 - 19 5月 2005
已对外发布

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