Gradual funnel photon trapping enhanced InAs/GaSb type-II superlattice infrared detector | Zendy

Lei Xiao | Zendy; Zhu Peng | Zendy; g Li | Zendy; Faran Chang | Zendy; Haofei Shi | Zendy; Xingzhan Wei | Zendy; Wen Xiong | Zendy; Tai Sun | Zendy; Guowei Wang | Zendy

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Gradual funnel photon trapping enhanced InAs/GaSb type-II superlattice infrared detector

Author(s) -

Lei Xiao,

Zhu Peng,

g Li,

Faran Chang,

Haofei Shi,

Xingzhan Wei,

Wen Xiong,

Tai Sun,

Guowei Wang

Publication year - 2022

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.468812

Subject(s) - responsivity , superlattice , optoelectronics , materials science , dark current , optics , detector , infrared , absorption (acoustics) , trapping , photodetector , specific detectivity , indium arsenide , noise (video) , physics , gallium arsenide , ecology , artificial intelligence , computer science , image (mathematics) , biology

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 × 10 11 cm Hz 1/2 at 78 K.

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