光致发光
材料科学
蒸发
Crystal(编程语言)
绝热过程
光电子学
热的
图层(电子)
单晶
分析化学(期刊)
纳米技术
光学
化学
结晶学
物理
气象学
程序设计语言
热力学
色谱法
计算机科学
作者
Guozhen Shen,Jung Hee Cho,Jin Kyoung Yoo,Gyu‐Chul Yi,Cheol Jin Lee
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 microbelt 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.
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