EPR Measurements of Chromium Impurity Photoionization Transitions in CdTe | Zendy

Godlewski M. | Zendy; Baranowski J. M. | Zendy

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EPR Measurements of Chromium Impurity Photoionization Transitions in CdTe

Author(s) -

Godlewski M.,

Baranowski J. M.

Publication year - 1980

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/pssb.2220970132

Subject(s) - electron paramagnetic resonance , photoionization , impurity , chromium , atomic physics , exchange interaction , cadmium telluride photovoltaics , chemistry , valence band , electron , spectral line , materials science , condensed matter physics , ion , molecular physics , ionization , nuclear magnetic resonance , band gap , physics , optoelectronics , organic chemistry , quantum mechanics , astronomy , ferromagnetism

The spectral dependence of the intensity of the EPR signal allows to identify the absorption tail of the band‐to‐band transition as due to a transfer of an electron from the valence band into the d‐shell of Cr 2+ (d 4 ) due to which the Cr + (d 5 ) charge state is created. The temperature dependence of the Cr + (d 5 ) EPR signal is investigated. It seems that the long lifetime of Cr + (d 5 ) is connected with the influence of the exchange interaction on the recombination process of an electron from the Cr + (d 5 ) state with a loosely bound hole.

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