Self-assembly and photoluminescence of CdS-mercaptoacetic clusters with internal structures

被引：70
|
作者：
Chen, HM [1 ]
Huang, XF
Xu, L
Xu, J
Chen, KJ
Feng, D
机构：
[1] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
来源：
SUPERLATTICES AND MICROSTRUCTURES | 2000年 / 27卷 / 01期
关键词：
nanocrystals; self-assembly; passivation; photoluminescence;
D O I：
10.1006/spmi.1999.0794
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
CdS-mercaptoacetic (CdS/M) clusters were synthesized by using mercaptoacetic acid as the stabilizing agent in the aqueous solution. From the transmission electron microscopy (TEM) image and the electron diffraction (ED) pattern, a two-dimensional nearly ordered CdS/M cluster array is observed and the CdS/M cluster is found to be constructed of small CdS/M nanocrystals. The model of self-assembly of the CdS/M clusters with internal structure is presented. The absorption spectrum of the CdS/M nanocrystal solution reveals a maximum at 372 nm and the corresponding photoluminescence (PL) spectrum shows a strong peak at 556 nm at room temperature. The PL spectra of various concentrations of CdS/M reveal the passivation effect of mercaptoacetic acid. (C) 2000 Academic Press.
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页码：1 / 5
页数：5
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