Preparation and characterization of CdS nanocrystallites in nafion

被引：10

作者：

Nandakumar, P

Vijayan, C

Murti, YVGS

Dhanalakshmi, K

Sundararajan, G

机构：

[1] INDIAN INST TECHNOL,DEPT PHYS,MADRAS 600036,TAMIL NADU,INDIA

[2] INDIAN INST TECHNOL,DEPT CHEM,MADRAS 600036,TAMIL NADU,INDIA

来源：

BULLETIN OF MATERIALS SCIENCE | 1997年 / 20卷 / 04期

关键词：

quantum dots; semiconductors; CdS; nanocrystallites; nafion;

D O I：

10.1007/BF02744774

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Perfluoroethylene sulfonic acid polymer (NAFION) films are subjected to ion exchange in the medium of aqueous solutions of cadmium acetate, followed by ammonia passivation. The films are then treated with hydrogen sulfide gas for prescribed times. X-ray powder diffraction data of these samples have been analyzed for estimating the sizes of the nanocrystallites. The optical absorption spectra of the samples show an absorption edge beginning at 525 nm for the largest size clusters. A broad absorption band appears with a maximum around 410 nm-440 nm in the smaller size clusters.

引用

页码：579 / 582

页数：4

共 6 条

[1]

[Anonymous], SEMICONDUCTORS

[2]

Cullity BD., 1978, ELEMENTS XRAY DIFFRA, V2

[3] NONLINEAR OPTICS OF SEMICONDUCTOR-DOPED GLASSES [J].