Photoluminescence, stimulated and laser emission in CuInSe2 crystals

Photoluminescence, stimulated and laser emission in CuInSe2 crystals

Excitonic quality CuInSe2 crystals were studied using low-temperature (10 K) photoluminescence (PL) excited by continuous wave and nanosecond pulsed lasers at power densities from 0.01 to 76 kW/cm2. Increasing the excitation power density level to 26 kW/cm2 resulted in the appearance of a stimulated...

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Veröffentlicht in:Applied physics letters 2021-11, Vol.119 (21)
Hauptverfasser: Svitsiankou, I. E., Pavlovskii, V. N., Lutsenko, E. V., Yablonskii, G. P., Mudryi, A. V., Borodavchenko, O. M., Zhivulko, V. D., Martin, R. W., Yakushev, M. V.
Format: Artikel
Sprache:eng
Schlagworte:
Applied physics
Continuous radiation
Copper indium selenides
Emission analysis
Emission spectra
Excitation
Low temperature
Nanosecond pulses
Photoluminescence
Pulsed lasers
Stimulated emission
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Zusammenfassung:Excitonic quality CuInSe2 crystals were studied using low-temperature (10 K) photoluminescence (PL) excited by continuous wave and nanosecond pulsed lasers at power densities from 0.01 to 76 kW/cm2. Increasing the excitation power density level to 26 kW/cm2 resulted in the appearance of a stimulated emission SE-band in the PL spectra at 1.035 eV. Further increase in the excitation level to 39 kW/cm2 generated on the top of the SE band, a structure of equidistant sharp lines attributed to laser emission.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0060076