Matches in SemOpenAlex for { <https://semopenalex.org/work/W4220849991> ?p ?o ?g. }
Showing items 1 to 52 of
52
with 100 items per page.
- W4220849991 abstract "Photodetectors comprising of InAs/(In, Ga)Sb Type-II Superlattice (T2SL) structures demonstrate excellent performance over bulk detectors, which mainly includes tunable bandgap and controllable photo-absorption. The T2SL exhibits completely distinct properties from its constituent materials. In particular, the thickness of InAs and GaSb considered in one period of the T2SL plays a key role in determining its photoresponse. In this work, we compare two different compositions of the T2SL structure, which have similar bandgaps, in order to analyze their electronic band properties and miniband characteristics. For this, 12ML/12ML and 11ML/7ML T2SLs are examined which have a similar bandgap of 0.17eV corresponding to the wavelength of 7.2μm and the ratios of InAs-to-GaSb widths are approximately 1 and 1.5, respectively. The bandgap and density-of-states (DOS) masses are obtained by employing the k.p method within the envelope function approximation and the E-k dispersion both in the in-plane and the out-of-plane directions are analyzed. To further gain microscopic insights, we examine the carrier localization, miniband, and spectral current properties of finite T2SL structures using the Keldysh nonequilibrium Green’s function (NEGF) method. The spatial separation of electrons and holes in InAs and GaSb layers can be elucidated via the local density of states. Furthermore, a higher finite interband overlap between the first conduction band (C1) and the first heavy hole band (HH1) is observed in an 11ML/7ML T2SL which indicates a stronger absorption. Also, to predict the carrier transport in these structures, we incorporate scattering processes via the momentum dephasing model and note a lesser broadened dark current spectra in the 12ML/12ML T2SL structure. This suggests a stronger localization of carriers and as a consequence, the dark tunneling current will be indeed be suppressed in this T2SL." @default.
- W4220849991 created "2022-04-03" @default.
- W4220849991 creator A5034403969 @default.
- W4220849991 creator A5083762103 @default.
- W4220849991 date "2022-05-17" @default.
- W4220849991 modified "2023-09-26" @default.
- W4220849991 title "Quantum transport studies on type-II superlattice absorber configurations for infrared photodetection" @default.
- W4220849991 doi "https://doi.org/10.1117/12.2621533" @default.
- W4220849991 hasPublicationYear "2022" @default.
- W4220849991 type Work @default.
- W4220849991 citedByCount "0" @default.
- W4220849991 crossrefType "proceedings-article" @default.
- W4220849991 hasAuthorship W4220849991A5034403969 @default.
- W4220849991 hasAuthorship W4220849991A5083762103 @default.
- W4220849991 hasConcept C105382558 @default.
- W4220849991 hasConcept C120665830 @default.
- W4220849991 hasConcept C121332964 @default.
- W4220849991 hasConcept C125287762 @default.
- W4220849991 hasConcept C147120987 @default.
- W4220849991 hasConcept C158355884 @default.
- W4220849991 hasConcept C181966813 @default.
- W4220849991 hasConcept C192562407 @default.
- W4220849991 hasConcept C26873012 @default.
- W4220849991 hasConcept C49040817 @default.
- W4220849991 hasConcept C62520636 @default.
- W4220849991 hasConceptScore W4220849991C105382558 @default.
- W4220849991 hasConceptScore W4220849991C120665830 @default.
- W4220849991 hasConceptScore W4220849991C121332964 @default.
- W4220849991 hasConceptScore W4220849991C125287762 @default.
- W4220849991 hasConceptScore W4220849991C147120987 @default.
- W4220849991 hasConceptScore W4220849991C158355884 @default.
- W4220849991 hasConceptScore W4220849991C181966813 @default.
- W4220849991 hasConceptScore W4220849991C192562407 @default.
- W4220849991 hasConceptScore W4220849991C26873012 @default.
- W4220849991 hasConceptScore W4220849991C49040817 @default.
- W4220849991 hasConceptScore W4220849991C62520636 @default.
- W4220849991 hasLocation W42208499911 @default.
- W4220849991 hasOpenAccess W4220849991 @default.
- W4220849991 hasPrimaryLocation W42208499911 @default.
- W4220849991 hasRelatedWork W1955596501 @default.
- W4220849991 hasRelatedWork W1980853485 @default.
- W4220849991 hasRelatedWork W2030301751 @default.
- W4220849991 hasRelatedWork W2385160451 @default.
- W4220849991 hasRelatedWork W2393171400 @default.
- W4220849991 hasRelatedWork W2403631959 @default.
- W4220849991 hasRelatedWork W3094894919 @default.
- W4220849991 hasRelatedWork W3102948493 @default.
- W4220849991 hasRelatedWork W4308599643 @default.
- W4220849991 hasRelatedWork W2026063708 @default.
- W4220849991 isParatext "false" @default.
- W4220849991 isRetracted "false" @default.
- W4220849991 workType "article" @default.