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Optical Characterization of Nuclear Detector Materials
Author(s) -
Suzuki K.,
Seto S.,
Sawada T.,
Imai K.,
Adachi M.,
Inabe K.
Publication year - 2002
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200201)229:1<601::aid-pssb601>3.0.co;2-7
Subject(s) - exciton , excited state , photoluminescence , relaxation (psychology) , acceptor , atomic physics , characterization (materials science) , materials science , physics , optoelectronics , condensed matter physics , nanotechnology , psychology , social psychology
The low temperature photoluminescence of Cd 0.91 Zn 0.09 Te grown by high pressure Bridgman method exhibits a neutral donor bound exciton emission (D 0 X) at 1.6560 eV with its excited state (D 0 X * ) at 1.6580 eV and neutral acceptor bound exciton emissions (A 0 X) at 1.6457 eV and 1.6520 eV. Assuming a direct generation and subsequent relaxation of excitons at the D 0 X * state and the exciton transfer from the D 0 X to the A 0 X states, we demonstrate that the temporal evolution of the above emission bands is well reproduced by a set of rate equations.