The influence of nickel dopant on the microstructure and optical properties of SnO2 nano-powders

• 来源期刊: 中国物理（英文版）
• 关键词: microstructure optical absorption spectra photoluminescence spectra SnO2
• 年，卷（期）: 2007,（1）
• 页码范围: 95-99
• 页数: 5页
• 语种: 英文

摘要

The microstructure and optical properties of Ni-doped SnO2 nano-powders are studied in detail. By Ni-doping, not only the grain size reduces, but also the grain shape changes from nano-rods to spherical particles. The crystallization becomes better with annealing temperature increasing. The band gap energy decreases as nickel doping level increases.The sp-d hybridization and alloying effect due to amorphous SnO2-x phase should be responsible for the band gap narrowing effect. Nickel dopant does not change the photoluminescence (PL) peak positions.