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Please use this identifier to cite or link to this item: http://hdl.handle.net/10087/2950

Title: Optical absorption and photoluminescence in the ternary chalcopyrite semiconductor AgInSe2
Authors: Ozaki, Shunji
Adachi, Sadao
Issue Date: 1-Dec-2006
Publisher: American Institute of Physics
Citation: Journal of Applied Physics. 100, 113526 (2006)
Abstract: Optical-absorption and photoluminescence (PL) spectra have been measured on the ternary chalcopyrite semiconductor AgInSe2 at T=13–300 K. The direct-band-gap energy Eg of AgInSe2 determined from the optical absorption measurements shows unusual temperature dependence at low temperatures. The resultant temperature coefficient ?Eg/?Tis found to be positive at T <125 K and negative above 125 K. The PL spectra show asymmetric emission bands peaking at ~1.18 and ~1.20 eV at T=13 K, which are attributed to donor-acceptor pair recombinations between exponentially tailed donor states and acceptor levels. An energy-band scheme has been proposed for the explanation of the peculiar PL emission spectra observed in AgInSe2.
URI: http://hdl.handle.net/10087/2950
ISSN: 0021-8979
Appears in Collections:学術雑誌論文

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