Crosstalk Analysis of SiC Ultraviolet Single Photon Avalanche Photodiode Arrays

Heng Zhang; Linlin Su; Dong Zhou; Weizong Xu; Fangfang Ren; Dunjun Chen; Rong Zhang; Youdou Zheng; Hai Lu

doi:10.1109/JPHOT.2019.2954119

IEEE Photonics Journal (Jan 2019)

Crosstalk Analysis of SiC Ultraviolet Single Photon Avalanche Photodiode Arrays

Heng Zhang,
Linlin Su,
Dong Zhou,
Weizong Xu,
Fangfang Ren,
Dunjun Chen,
Rong Zhang,
Youdou Zheng,
Hai Lu

Affiliations

Heng Zhang: ORCiD; School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
Linlin Su: School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
Dong Zhou: School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
Weizong Xu: School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
Fangfang Ren: School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
Dunjun Chen: School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
Rong Zhang: School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
Youdou Zheng: School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China
Hai Lu: ORCiD; School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China

DOI: https://doi.org/10.1109/JPHOT.2019.2954119
Journal volume & issue: Vol. 11, no. 6
pp. 1 – 8

Abstract

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Optical crosstalk is one of major problems limiting the performance of focal plane arrays based on single photon avalanche diodes (SPADs). In this work, for the first time the crosstalk characteristics of a 4H-SiC SPAD linear array are studied, which is based on a real-time dual channel data acquisition method. It is found that SiC SPAD array exhibits similar crosstalk probability compared with those of InGaAs-based SPAD arrays, which can be effectively reduced by trench isolation between adjacent pixels or by lowering overbias. The average time required for forming a crosstalk event is determined between 7 and 10 ns. As a result, active time-gated operation scheme can be applied for reducing crosstalk.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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