Results 21 to 30 of about 13,155 (214)

Non-Radiative Transitions of Holes on Mercury Vacancies in Narrow-Gap HgCdTe

open access: yesPhotonics, 2022
Mercury vacancies, acting as double acceptors, are the dominant point defects in ternary HgCdTe alloys. Though HgCdTe is one of the leading materials in infrared optoelectronics, the energy spectra of the vacancies are still a matter of some debate. This
Dmitry V. Kozlov   +9 more
doaj   +1 more source

ATLAST detector needs for direct spectroscopic biosignature characterization in the visible and near-IR [PDF]

open access: yes, 2015
Are we alone? Answering this ageless question will be a major focus for astrophysics in coming decades. Our tools will include unprecedentedly large UV-Optical-IR space telescopes working with advanced coronagraphs and starshades.
Bolcar, Matthew R.   +8 more
core   +3 more sources

Medium wavelength infrared HgCdTe discrete photodetectors

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2017
The authors have developed the topology and technological fabrication route for discrete photodiodes (Θ = 0,5—1,5 mm) for the mid wavelength infrared (MWIR) range, based on the mercury-cadmium-telluride (MCT) epitaxial layers.
Z. F. Tsybrii   +11 more
doaj   +1 more source

HgCdTe e-avalanche photodiode detector arrays

open access: yesAIP Advances, 2015
Initial results on the MWIR e-APD detector arrays with 30 μm pitch fabricated on LPE grown compositionally graded p-HgCdTe epilayers are presented. High dynamic resistance times active area (R0A) product 2 × 106 Ω-cm2, low dark current density 4 nA/cm2 ...
Anand Singh, A. K. Shukla, Ravinder Pal
doaj   +1 more source

Rashba spin splitting in biased semiconductor quantum wells [PDF]

open access: yes, 2005
Rashba spin splitting (RSS) in biased semiconductor quantum wells is investigated theoretically based on the eight-band envelope function model. We find that at large wave vectors, RSS is both nonmonotonic and anisotropic as a function of in-plane wave ...
A. Darr   +5 more
core   +1 more source

Stimulated Emission up to 2.75 µm from HgCdTe/CdHgTe QW Structure at Room Temperature

open access: yesNanomaterials, 2022
Heterostructures with thin Hg(Cd)Te/CdHgTe quantum wells (QWs) are attractive for the development of mid-infrared interband lasers. Of particular interest are room-temperature operating emitters for the short-wavelength infrared range (SWIR, typically ...
Vladimir V. Utochkin   +12 more
doaj   +1 more source

nBn HgCdTe infrared detector with HgTe(HgCdTe)/CdTe SLs barrier [PDF]

open access: yesOptical and Quantum Electronics, 2016
Several strategies have been implemented to improve the performance of infrared single pixel detectors at higher operating temperature condition. The most efficient and effective in HgCdTe technology are: non-equilibrium architectures and currently an idea of the barrier detector to include unipolar and complementary structures.
Benyahia, D.   +8 more
openaire   +1 more source

Diffusion of Dopants and Components in Arsenic-Implanted CdTe/HgCdTe Structures under Different High-Temperature Annealing Conditions

open access: yesProceedings, 2019
The CdTe cap layers were grown on CdZnTe-substrated HgCdTe (MCT) LPE epilayers by magnetron sputtering and thermal evaporation. The diffusion behaviors of Cd & Hg components and impurities (As or In) in these CdTe/MCT structures subjected to As ion ...
Changzhi Shi, Chun Lin, Yanfeng Wei
doaj   +1 more source

Comparative studies on the electronic transport in magnetically quantized low band gap semiconductor system

open access: yesBibechana, 2020
The Q1D system formed by magnetically confined system is attracting attention of researchers in device application because it is capable of over-looking the various techniques of fabrication difficulties and defects created by such fabrication ...
S Shrestha, C K Sarkar
doaj   +3 more sources

Room temperature operated HgCdTe colloidal quantum dot infrared focal plane array using shockwave dispersion technique

open access: yesApplied Surface Science Advances, 2020
This paper reports development and performance evaluation of room temperature operated Mercury Cadmium Telluride (HgCdTe) colloidal quantum dot (CQD) coated Si Readout Integrated Circuit (ROIC) based Infrared (IR) Focal Plane Array (FPA).
Abhijit Chatterjee   +3 more
doaj   +1 more source

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