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HOT mid-wave HgCdTe nBn and pBp infrared detectors
- Source :
- Optical and Quantum Electronics. 47(6):1311-1318
- Publisher :
- Springer Nature
-
Abstract
- Narrow band gap photon infrared detectors require cryogenic cooling to suppress the noise deteriorating the performance. Among the competitive materials and theoretical predictions favouring type-II superlattices InAs/GaSb, HgCdTe has been still considered as the leader in terms of the fundamental physical parameters. The size, weight, power consumption and multispectral response of the infrared detection system play decisive role in fabrication of the higher operation temperature detectors. Several strategies have been implemented to improve the performance at elevated temperatures. The most efficient and used in HgCdTe technology are: non-equilibrium architectures and currently an idea of the barrier detectors. In this paper we present the comparison of the \(\hbox {nB}_\mathrm{n}\hbox {n}\) and \(\hbox {pB}_\mathrm{p}\hbox {p}\,(\hbox {B}_\mathrm{n}\) and \(\hbox {B}_\mathrm{p}\) stands for n/p-type doped barrier) HgCdTe photodetectors. \(\hbox {pB}_\mathrm{p}\hbox {p}\) architecture allows to reach higher performance (detectivity \({\sim }10^{9}\,\hbox {cm}\,\hbox {Hz}^{1/2}/\mathrm {W}\) for \(T = 200\) K) at mid-wave spectrum for wide range of absorber p-type doping \(2\times 10^{14}\rightarrow 10^{17}\,\hbox {cm}^{-3}\) and barrier Cd composition \(0.37\rightarrow 0.7\).
- Subjects :
- Physics
business.industry
Infrared
Superlattice
Doping
Detector
Operation temperature
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
Narrow band
Power consumption
Optoelectronics
Atomic physics
Electrical and Electronic Engineering
business
Computer communication networks
Subjects
Details
- Language :
- English
- ISSN :
- 03068919
- Volume :
- 47
- Issue :
- 6
- Database :
- OpenAIRE
- Journal :
- Optical and Quantum Electronics
- Accession number :
- edsair.doi.dedup.....b1e71f715660ec515918f7a4b1d1f72b
- Full Text :
- https://doi.org/10.1007/s11082-014-0044-7