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Surface passivation of 1550nm AlxInyAsSb avalanche photodiode

  • Chunyan Guo
  • , Yuexi Lv
  • , Da'nong Zheng
  • , Yaoyao Sun
  • , Zhi Jiang
  • , Dongwei Jiang
  • , Guowei Wang
  • , Yingqiang Xu
  • , Tao Wang
  • , Jinshou Tian
  • , Zhaoxin Wu
  • , Zhichuan Niu
  • CAS - Xi'an Institute of Optics and Precision Mechanics
  • Xi'an Jiaotong University
  • University of Chinese Academy of Sciences
  • CAS - Institute of Semiconductors

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We report three kinds of surface passivation for AlxInyAsSb APD, which are SiO2, SiO2 after sulfuration and SU8 2005 treatments. A good sidewall profile of mesas were etch by Inductively Coupled Plasma (ICP) to 2.6μm depth. The order of dark current for device with SU8 passivation is less than-12 under the temperature of 100K. Dark current and photocurrent increase linearly with diameter of mesa. Also, the devices with different passivation methods produce photocurrent excited by incident power. The measurements are consistent with CV modeling and electric field simulations.

Original languageEnglish
Title of host publicationOptoelectronic Devices and Integration VII
EditorsChangyuan Yu, Xuping Zhang, Baojun Li, Xinliang Zhang, Xinliang Zhang
PublisherSPIE
ISBN (Electronic)9781510622265
DOIs
StatePublished - 2018
EventOptoelectronic Devices and Integration VII 2018 - Beijing, China
Duration: 11 Oct 201813 Oct 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10814
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptoelectronic Devices and Integration VII 2018
Country/TerritoryChina
CityBeijing
Period11/10/1813/10/18

Keywords

  • AlxInyAsSb avalanche photodiode
  • Dark current
  • Photocurrent
  • Surface passivation

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