Improved Specific Detectivity to 10 for CMOS-MEMS Pyroelectric Detector Based on 12%-Doped Scandium Aluminum Nitride

Doris K.T. Ng, Tantan Zhang, Li Yan Siow, Linfang Xu, Chong Pei Ho, Hong Cai, Lennon Y.T. Lee, Qingxin Zhang, Navab Singh

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

4 Citations (Scopus)

Abstract

CMOS-MEMS pyroelectric detectors based on 12%-doped ScAlN are fabricated using 8-inch MEMS wafer technology and characterized. The ScAlN pyroelectric material is deposited at a low temperature of 200oC. The results show D∗ as high as 4.3 x 10 (cm√Hz)/W and NEP as low as 1.26 x 10-9 W/√Hz. This is the first demonstration of a functional CMOS-MEMS pyroelectric detector using ScAlN as the pyroelectric sensing material. Compared to AlN that usually presents D∗ in the range of 105-106, Sc-doped AlN brings on the promise of better performing CMOS-MEMS pyroelectric detectors that could be miniaturized, integrated with CMOS circuits and provide wider applications.

Original languageEnglish
Title of host publication34th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages860-863
Number of pages4
ISBN (Electronic)9781665419123
DOIs
Publication statusPublished - 25 Jan 2021
Externally publishedYes
Event34th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2021 - Virtual, Gainesville, United States
Duration: 25 Jan 202129 Jan 2021

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
Volume2021-January
ISSN (Print)1084-6999

Conference

Conference34th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2021
Country/TerritoryUnited States
CityVirtual, Gainesville
Period25/01/2129/01/21

Keywords

  • CMOS-MEMS
  • pyroelectric detector
  • Scandium Aluminum nitride

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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