Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13087/969
Title: Quantum efficiency contributions for type-II InAs/GaSb SL photodetectors
Authors: Hoştut, Mustafa
Ergun, Yüksel
Keywords: InAs
GaSb
Type-II superlattices
Quantum efficiency
Photodetectors
MWIR
Issue Date: 2021
Publisher: Elsevier
Abstract: We analyze the quantum efficiency (QE) constituents of three type-II InAs/GaSb superlattice (T2SL) photodetectors with identical period lengths and different i- and p-layer thicknesses. The T2SL mid-wave detectors show the spectral response with 50% cut-off wavelength equal to 4.88 ?m at 79 K. Empirical pseudopotential method (EPM) is employed to define band structure such as bandgap energy and heavy hole?light hole (HH?LH) splitting energies. Peak responsivities are measured as 1.14, 1.20, and 1.26 A/W at 4 ?m under zero bias, with corresponding QEs of 35%, 37%, and 39%. The QEs of pin detectors are simulated by photocurrent analysis according to the Hovel Model to determine the contribution of QE components.
URI: https://doi.org/10.1016/j.physe.2021.114721
https://hdl.handle.net/20.500.13087/969
ISSN: 1386-9477
1873-1759
Appears in Collections:Biyoloji Bölümü Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu

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