Investigation of INGAAs/GAAs photodetectors with ALAs/GAAS nanolayers

I. Zborowska-Lindert, D. Radziewicz, B. Boratyński, B. Ściana, S. Patela, M. Tlaczala
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Abstract

The results of investigation of two types of resonant cavity enhanced (RCE) photodetectors PIN and MSM are presented. The structures were designed for wavelength range of870nni I OOOnin; thus the In,GalJs absorption layer with proper composition of indium has been used as am active layer. All structures have been fabricated using Metal Organic Vapour Phase Epitaxy (MO VPE) growth on GaAs substrates with dflerent buffer and matching layer conjguration. For design of the photodeteclor of selective wavelength the resonant cmiily has been fornred with the use oJa Bragg reflector structure consisting oJ 10 pairs of AIAs/GaAs (76/GS.Snn,). The active InGaAs layer was deposited in one process on all substrates with different AIAs/GaAs namolayers conJguration. The device structures were fabricated using a standard W I C processing.
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介绍了两种谐振腔增强(RCE)光电探测器PIN和MSM的研究结果。该结构的设计波长范围为870nni1ooonin;因此,铟的适当组成的铟镓镓吸收层被用作活性层。所有的结构都是利用金属有机气相外延(MO VPE)生长在具有不同缓冲层和匹配层共轭的GaAs衬底上制备的。在选择性波长光电探测器的设计中,采用了由10对AIAs/GaAs (76/GS.Snn,)组成的oJa Bragg反射器结构,形成了谐振结构。活性InGaAs层在不同的AIAs/GaAs纳米层聚合的所有衬底上一次沉积。器件结构采用标准的钨镉合金工艺制备。
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