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太赫兹Si/SiGe量子级联激光器的能带设计 被引量:4

Energy Band Design for a Terahertz Si/SiGe Quantum Cascade Laser
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摘要 使用nextnano^3模拟软件计算Si/Si1-xGex/Si量子阱的能带结构,对Si/SiGe量子级联激光器有源区的能带结构进行设计,结果表明使用Ge组分为0.27~0.3,量子阱宽度为3nm的SiGe合金与垒宽为3nm的Si层构成对称应变级联异质结构,有利于优化THz Si/SiGe量子级联激光器结构。 The eigenenergies of confined states in Si/SiGe/Si quantum wells are calculated with nextnano^3 software for the design of terahertz Si/SiGe QCLs. The results indicate that the structure of the Si/SiGe quantum cascade may be optimized by using a strain-symmetric heterostructure consisting of a Si1-xGex (0.27〈x〈0.3) well with a width of 3nm and a Si barrier with a width of 3nm.
出处 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2006年第5期916-920,共5页 半导体学报(英文版)
基金 国家自然科学基金(批准号:60576001 60336010) 福建省青年科技人才创新基金(批准号:2004J021)资助项目~~
关键词 SI/SIGE 量子级联激光器 子带阱间跃迁 nextnano^3 Si/SiGe quantum cascade laser intersubband interwell transitions nextnano^3
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参考文献12

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