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Photo‐Chemical Reaction Studies in Selenium‐Doped Potassium Iodide
Author(s) -
Prakash J.
Publication year - 1984
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.2221210112
Subject(s) - irradiation , selenium , impurity , absorption (acoustics) , vacancy defect , doping , chemistry , potassium , iodide , dipole , ion , photochemistry , ultraviolet , analytical chemistry (journal) , materials science , inorganic chemistry , crystallography , optoelectronics , physics , organic chemistry , nuclear physics , composite material
The absorption bands due to an isolated Se 2− —anion vacancy dipole in KI lie in the near ultraviolet range. Irradiation in the short wavelength absorption bands at 243 K is found to be responsible for photo‐chemical reactions (PCR). During PCR, an impurity—vacancy dipole is destroyed with the simultaneous formation of an F‐centre. No PCR is observed when the system is irradiated at LNT. Irradiation in the long wavelength absorption bands is found to be ineffective in producing PCR.