Anisotropic laser crystallization of a-Se

被引：15

作者：

Tikhomirov, VK ^{[1
]}

Hertogen, P ^{[1
]}

Adriaenssens, GJ ^{[1
]}

Glorieux, C ^{[1
]}

Ottenburgs, R ^{[1
]}

机构：

[1] Katholieke Univ Leuven, B-3001 Heverlee, Belgium

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1998年 / 227卷

关键词：

anisotropic laser crystallization; amorphous selenium (a-Se) film; beta-monoclinic phase; hexagonal (gamma-Se) crystalline phase;

D O I：

10.1016/S0022-3093(98)00155-0

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：

Anisotropic laser-stimulated crystallization is reported for amorphous selenium (Se) films due to irradiation by linearly polarized He-Ne or Ti:Sapphire (630-750 nm) laser beams with sample temperatures at and slightly above the glass transition temperature. Both beta-monoclinic and hexagonal crystalline phases are detected in the crystallized film by X-ray diffraction (XRD) measurements. The optical contrast between crystalline and amorphous parts of the film is larger when crystallization is induced by linearly polarized light as compared to crystallization by unpolarized light. The origin of anisotropic nuclei and their anisotropic growth is discussed and it is shown that the mechanisms of optically and thermally induced crystallization are essentially different. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：732 / 738

页数：7

共 14 条

[1] THERMAL-DIFFUSIVITY MEASUREMENTS OF THIN-FILMS WITH A PYROELECTRIC CALORIMETER [J].