Open AccessAnalysis of InAsSb nBn spectrally filtering photon-trapping structures
Author(s) -
Jonathan Schuster,
Arvind I. D'Souza,
E. Bellotti
Publication year - 2014
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.22.018987
Subject(s) - optics , detector , broadband , photon , optoelectronics , infrared , flexibility (engineering) , materials science , power (physics) , physics , statistics , mathematics , quantum mechanics
We have numerically analyzed the electromagnetic and electrical characteristics of InAsSb nBn infrared detectors employing a photon-trapping (PT) structure realized with a periodic array of pyramids intended to provide broadband operation. The three-dimensional numerical simulation model was verified by comparing the simulated dark current and quantum efficiency to experimental data. Then, the power and flexibility of the nBn PT design was used to engineer spectrally filtering PT structures. That is, detectors that have a predetermined spectral response to be more sensitive in certain spectral ranges and less sensitive in others.