TY  - JOUR
AU  - Sokolov, V. I.
AU  - Pustovarov, Vladimir
AU  - Churmanov, V. N.
AU  - Ivanov, Vladimir
AU  - Gruzdev, N. B.
AU  - Sokolov, Petr
AU  - Baranov, Andrey
AU  - Moskvin, A. S.
TI  - Self-trapping of the d-d charge transfer exciton in rock-salt structured Zn<sub>1−x</sub>Ni<sub>x</sub>O evidenced by soft X-ray excited luminescence
JO  - Physica status solidi / C
VL  - 10
IS  - 10
SN  - 1862-6351
CY  - Berlin
PB  - Wiley-VCH
M1  - DESY-2014-01540
SP  - 1329-1335
PY  - 2013
N1  - © WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim; Post referee fulltext in progress; Embargo 12 months from publication
AB  - Luminescence spectra of NiO and solid solutions Zn1–xNixO have been investigated under vacuum ultra-violet (VUV) and soft X-ray (XUV) excitation (DESY, Hamburg). Photoluminescence (PL) spectra show broad emission violet and green bands centered at about 3.2 and 2.6 eV, respectively. The PL excitation (PLE) spec-tral evolution and lifetime measurements reveal that the two mechanisms with short and long decay times, at-tributed to the d(eg)-d(eg) and p(π)-d charge transfer (CT) transitions in the range 4–6 eV, respectively, are responsible for the observed emissions. The XUV excitation makes it possible to avoid the predominant role of the surface effects in luminescence and reveal a bulk violet luminescence with puzzling well isolated doublet of very narrow lines. These lines with close energies near 3.3 eV are attributed to recombination transitions in the self-trapped d-d CT excitons formed by the coupled Jahn-Teller Ni+ and Ni3+ centers. (© 2013 WILEY-VCH Verlag GmbH </td><td width="150">
AB  -  Co. KGaA, Weinheim)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000337152100017
DO  - DOI:10.1002/pssc.201200980
UR  - https://bib-pubdb1.desy.de/record/166699
ER  -