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  • Photophysical Properties of Donor–Acceptor−π Bridge–Acceptor Sensitizers with a Naphthobisthiadiazole Auxiliary Acceptor: Toward Longer-Wavelength Access in Dye-Sensitized Solar Cells
Title: Photophysical Properties of Donor–Acceptor−π Bridge–Acceptor Sensitizers with a Naphthobisthiadiazole Auxiliary Acceptor: Toward Longer-Wavelength Access in Dye-Sensitized Solar Cells
Award ID(s):
1757220
PAR ID:
10417631
Author(s) / Creator(s):
; ; ; ; ; ;
Date Published:
Journal Name:
The Journal of Physical Chemistry C
Volume:
126
Issue:
29
ISSN:
1932-7447
Page Range / eLocation ID:
11875 to 11888
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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    The Be-related ultraviolet luminescence (UVLBe) band with a maximum at about 3.38 eV in GaN:Be is caused by the shallowest acceptor in GaN with the /0 transition level at 0.113 eV above the valence band. The luminescent properties of this acceptor were studied in detail. First-principles calculations identify this acceptor as the BeGaONBeGa complex. These calculations also predict a deep level, at 0.34 eV above the valence band. However, we were not able to find evidence for this level in photoluminescence experiments. 
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