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半绝缘InP的铁掺杂激活与电学补偿
Authors
杨俊
王博
+4 more
苗杉杉
董志远
赵有文
邓爱红
Publication date
1 January 2006
Publisher
Abstract
比较了掺Fe和非掺退火半绝缘(SI)InP材料中Fe杂质的分布,掺杂激活机理以及Fe原子与点缺陷的相互作用.原生掺Fe SI-InP中Fe的替位激活主要通过填隙-跳跃机制,但Fe原子易在位错周围聚集,与空位形成复合体缺陷,占据填隙位等,从而降低Fe的激活效率.在FeP2气氛下退火非掺InP获得的SI-InP材料中,Fe原子的激活主要通过扩散过程的"踢出-替位"机制.退火前材料中存在的In空位使Fe原子通过扩散充分占据In位,同时抑制了材料中深能级缺陷的形成.因此,这种SI-InP材料的Fe激活效率高、电学性能好
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Last time updated on 15/03/2019