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OPTICAL SENSITIZATION OF CHARGE CARRIER TRANSPORT IN POLY( N ‐VINYL CARBAZOLE) *
Author(s) -
Regensburger Paul J.
Publication year - 1968
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1968.tb05887.x
Subject(s) - carbazole , materials science , photoconductivity , polymer , selenium , trapping , amorphous solid , optoelectronics , thin film , photochemistry , polymer chemistry , chemistry , nanotechnology , organic chemistry , composite material , ecology , metallurgy , biology
— The photoconductivity of thin films of poly(N‐vinyl carbazole), and poly(N‐vinyl carbazole) sensitized with a thin layer of amorphous selenium, has been measured using a ‘xerographic’ condenser discharge technique and a conventional time of flight light pulse photo‐response technique. Direct camer generation and hole mobility in the polymer was found to be strongly field dependent. There appears to be no evidence for deep trapping. Hole transport through the polymer was able to be sensitized by light absorbed in the selenium. The results indicate that the photosensitization mechanism can be thought of in terms of hole generation and transport in selenium, field‐modulated injection across the selenium polymer interface and transport through the polymer.