Direct mapping and characterization of the surface local field in InGaAs/InP avalanche photodetectors

Qing Li,Ting He,Kun Zhang,Yunlong Xiao,Ke Deng,Jinshui Miao,Ning Li,Wenjuan Wang,Wei Lu

Infrared Physics & Technology（2022）

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摘要

•Effectual guard ring designs for decreasing the lateral electric field.•Nondestructive measurement for the fabricated guard ring.•Uniform electric field has been achieved at the linear mode.

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关键词

Avalanche photodetectors,InGaAs/InP photodetectors,Guard rings,Scanning photocurrent microscopy

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