Photoinduced Hole Injection Multiplication in p-Type Quinacridone Pigment Films
- 1 March 1996
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 35 (3A), L349-351
- https://doi.org/10.1143/jjap.35.l349
Abstract
A large photocurrent multiplication due to hole injection reaching 2500-fold was observed in organic p-type quinacridone pigment films. This phenomenon was revealed to be due to photoinduced excess hole injection from a positively biased metal electrode to the p-type organic film through its depletion layer under a high electric field, which is built up by the photo-accumulation of trapped electrons near the interface. This is a clear example that the reverse mechanism to the photoinduced electron injection observed for n-type organic pigment film can occur in p-type organic pigment film.Keywords
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