Applicability of ZnO single crystals for ultraviolet sensors

被引：31

作者：

Masuoka, F ^{[1
]}

Ooba, K

Sasaki, H

Endo, H

Chiba, S

Maeda, K

Yoneyama, H

Niikura, I

Kashiwaba, Y

机构：

[1] Iwate Univ, 4-3-5 Ueda, Morioka, Iwate 0208551, Japan

[2] Iwate Ind Res Inst, Morioka, Iwate 0200852, Japan

[3] Tokyo Denpa Co Ltd, Tokyo 1430024, Japan

来源：

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 4 | 2006年 / 3卷 / 04期

关键词：

D O I：

10.1002/pssc.200564753

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Photoconductivity of ZnO single crystals grown by a hydrothermal method for ultraviolet light was measured. The ZnO single crystals have photo response in a range of wavelengths shorter than 380 nm. O-faces of ZnO single crystals of the c-plane showed higher photocurrents and wider spectral response than did Zn-faces. It is thought that band bending at the surface regions of ZnO crystals is large at the O-face but small at the Zn-face, because the surface state density for electron capture at the O-face was higher than that of the Zn-face and, therefore, carriers generated at the surface region by UV light were effectively separated at the O-face region before their recombination. The difference between photoresponces of the O-face and the Zn-face is also useful for determining the polarity of a ZnO crystal.

引用

页码：1238 / +

页数：2

共 3 条

[1] PHOTOCONDUCTIVITY OF ZINC OXIDE AS A SURFACE PHENOMENON [J].