PHOTOIRRADIATION EFFECT ON COLLOIDAL CADMIUM-SULFIDE FORMATION PROCESSES

被引：5

作者：

HAYASHI, T

YAO, H

TAKAHARA, S

MIZUMA, K

机构：

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1992年 / 96卷 / 07期

关键词：

D O I：

10.1021/j100186a016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cadmium sulfide ultrafine particles of about 3 nm in diameter were prepared by introducing a H2S/He gas mixture into an acetonitrile solution of cadmium perchlorate, styrene monomer, and omicron-dicyanobenzene while irradiating the solution with light of wavelengths longer than 440 nm. The UV-vis spectral absorption onset wavelengths of the CdS colloidal solutions were blue-shifted in comparison with those of solutions not irradiated. The UV-vis spectra also showed the appearance of a shoulder due to the exciton absorption of quantum-confined CdS particles. These results demonstrate a new method for preparing size-regulated semiconductor ultrafine particles in the size range where quantum confinement of carriers occurs.

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页码：2866 / 2868

页数：3

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