Identification of Hydrogen Molecules in ZnO

被引：91

作者：

Lavrov, E. V. ^{[1
]}

Herklotz, F. ^{[1
]}

Weber, J. ^{[1
]}

机构：

[1] Tech Univ Dresden, D-01062 Dresden, Germany

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 18期

关键词：

ZINC-OXIDE; GROWN ZNO; DONOR; SPECTROSCOPY; ABSORPTION; CRYSTALS; SILICON; OH;

D O I：

10.1103/PhysRevLett.102.185502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Hydrogen molecules in ZnO are identified by their local vibrational modes. In a Raman study, interstitial H(2), HD, and D(2) species were found to exhibit local vibrational modes at frequencies 4145, 3628, and 2985 cm(-1), respectively. After thermal treatment of vapor phase grown ZnO samples in hydrogen atmosphere, most hydrogen forms shallow donors at the bond-centered site (H(BC)). Subsequently, H(BC) migrates through the crystal and forms electrically inactive H(2). These results imply that the "hidden" hydrogen in ZnO [G. A. Shi et al., Appl. Phys. Lett. 85, 5601 (2004)] occurs in the form of interstitial H(2).

引用

页数：4