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Photoconduction in single crystals of a pentamethinium cyanine dye
Author(s) -
Hauschildt D.,
Fuhs W.,
Hesse H.J.
Publication year - 1979
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.2220910210
Subject(s) - cyanine , photoconductivity , photocurrent , exciton , materials science , perpendicular , excitation , ion , optoelectronics , recombination , singlet state , crystal (programming language) , photochemistry , optics , chemistry , atomic physics , condensed matter physics , fluorescence , physics , computer science , programming language , excited state , biochemistry , geometry , mathematics , organic chemistry , quantum mechanics , gene
The photoconductivity of a pentamethinium cyanine dye is studied on different crystal faces for light polarized parallel and perpendicular to the pentamethinium chain. According to the spectral dependence the first step in the photoconduction process is the excitation of singlet excitons. Free carriers are generated in the volume of the crystals. The photocurrent is recombination limited. The photoconductivity is found to be insensitive to irradiation with high doses of high energetic ions.