Time resolved photoluminescence spectroscopy of narrow gap Hg{sub 1−x}Cd{sub x}Te/Cd{sub y}Hg{sub 1−y}Te quantum well heterostructures

Journal Article · Mon Jul 14 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4890416· OSTI ID:22311077

Morozov, S. V.; Antonov, A. V.; Kadykov, A. M.; Maremyanin, K. V.; Kudryavtsev, K. E.; Gavrilenko, V. I. ^[1]; Mikhailov, N. N.; Dvoretskii, S. A. ^[2]

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1. Institute for Physics of Microstructures of Russian Academy of Sciences, 603950 Nizhny Novgorod (Russian Federation)
2. A.V. Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk (Russian Federation)

Photoluminescence (PL) spectra and kinetics of narrow gap Hg{sub 1−x}Cd{sub x}Te/Cd{sub y}Hg{sub 1−y}Te quantum well (QW) heterostructures grown by molecular beam epitaxy technique are studied. Interband PL spectra are observed from 18 K up to the room temperature. Time resolved studies reveal an additional PL line with slow kinetics (7 μs at 18 K) related to deep defect states in barrier layers. These states act as traps counteracting carrier injection into QWs. The decay time of PL signal from QW layers is about 5 μs showing that gain can be achieved at wavelengths 10–20 μm by placing such QWs in HgCdTe structures with waveguides.

• OSTI ID: 22311077
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 2 Vol. 105; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CADMIUM COMPOUNDS
CARRIERS
CRYSTAL DEFECTS
DECAY
DEPLETION LAYER
INJECTION
MERCURY COMPOUNDS
MOLECULAR BEAM EPITAXY
PHOTOLUMINESCENCE
QUANTUM WELLS
SPECTRA
SPECTROSCOPY
TELLURIUM COMPOUNDS
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0273-0400 K
TIME RESOLUTION
TRAPS
WAVEGUIDES
WAVELENGTHS