LASER SPOT SCANNING IN PHOTOELECTROCHEMICAL SYSTEMS, RELATION BETWEEN SPOT SIZE AND SPATIAL-RESOLUTION OF THE PHOTOCURRENT

被引：12

作者：

ERIKSSON, S

CARLSSON, P

HOLMSTROM, B

UOSAKI, K

机构：

[1] GOTHENBURG UNIV,DEPT PHYS CHEM,S-41296 GOTHENBURG,SWEDEN

[2] HOKKAIDO UNIV,FAC SCI,DEPT CHEM,SAPPORO,HOKKAIDO 060,JAPAN

来源：

JOURNAL OF APPLIED PHYSICS | 1991年 / 69卷 / 04期

关键词：

D O I：

10.1063/1.348714

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Laser spot scanning studies of single-crystalline p-InSe in contact with a neutral aqueous solution reveal a dramatic difference in lateral resolution between the material "as cleaved" and after platinization by brief dipping in a dilute H2PtCl6 solution. A model is developed to explain these observations, and the resolution is calculated as a function of the diffusion coefficient and the life time of minority carriers, and of the charge transfer rate. The improvement of the resolution is found to be due to the increase of the rate of hydrogen evolution at the illuminated semiconductor by Pt catalyst. The model also provides numerical values for the charge transfer rate in the noncatalyzed and the catalyzed cases.

引用

页码：2324 / 2327

页数：4

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