Affiliation:
1. University of Chinese Academy of Sciences
2. Chinese Academy of Sciences
3. Nanjing University
Abstract
InAs/GaSb type-II superlattice materials have attracted in the field of infrared detection due to their high quality, uniformity and stability. The performance of InAs/GaSb type-II superlattice detector is limited by dark noise and light response. This work reports a gradual funnel photon trapping (GFPT) structure enabling the light trapping in the T2SL detector absorption area. The GFPT detector exhibits an efficient broadband responsivity enhancement of 30% and a darker current noise reduction of 3 times. It has excellent passivated by atomic layer deposition and achieves a high detectivity of 1.51 × 1011 cm Hz1/2 at 78 K.
Funder
CAS “Light of West China” Program
National Natural Science Foundation of China
Natural Science Foundation Project of CQ CSTC
Chongqing Talents Innovation and Entrepreneur Leaders Project
Key Technologies Research and Development Program
Major Program of the National Natural Science Foundation of China
Chinese Aeronautical Establishment
Key Research Program of the Chinese Academy of Sciences
Research Foundation for Advanced Talents of the Chinese Academy of Sciences
Subject
Atomic and Molecular Physics, and Optics
Cited by
2 articles.
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