节点文献
GaAs/Ga0.7Al0.3As短周期超晶格中的自电光双稳和多稳态效应
Electro-Optical Bistability and Multistability Effects in GaAs/Ga0.7Al0.3As Short-Period Superlattices
【摘要】 我们研究了GaAs/Ga0.7Al0.3As(35A/35A)超晶格p-i-n二极管在超晶格光吸收边附近的室温光电流随电压的变化。Wannier局域化导致的-1h和-2h激子跃迁产生两个光电流负微分电阻区。在由超晶格p-i-n二极管组成的SEED器件中实现了光电流(吸收)的双稳和三稳态跳变,特别是在无外偏压下也观测到了明显的光电流双稳跳变。
【Abstract】 We have studied bias-dependence of photocurrent response near GaAs/Ga0.7Al0.3As superlatticeabsorption edge in superlattice p-i-n diodes at room temperature. The-1h and -2h excitontransitions induced by Wannier localization produce two regions of negative differential photoconductivity.Photocurrent (absorption) electro-optical bistability and tristability have beenrealized in SEED devices composed of a superlattice p-i-n diode, and especially, obvious bistabilitytransitions have been observed in unbiased SEED devices.
【基金】 国家自然科学基金
- 【文献出处】 半导体学报 ,Chinese Journal of Semiconductors , 编辑部邮箱 ,1993年04期
- 【被引频次】1
- 【下载频次】15