✦ LIBER ✦

Peculiarities of radiative recombination in amorphous molecular semiconductors doped with polymethine dye

✍ Scribed by N. A. Davidenko; A. A. Ishchenko

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 164 KB
Volume: 8
Category: Article
ISSN: 1616-301X
DOI: 10.1002/(sici)1099-0712(1998070)8:4<201::aid-amo357>3.0.co;2-i

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✦ Synopsis

Processes of charge carrier photogeneration and recombination are investigated in films of poly-Nepoxypropylcarbazole doped with polymethine dye. Films with blocking contacts were illuminated with light from either the region of dye absorption or beyond this region. The kinetics of accumulation and relaxation of electron-hole pairs with lifetimes greater than tens or hundreds of seconds was studied. It is presumed that the reason for the growth of recombination luminescence intensity in an external electric field is connected with the increase in efficiency of radiative recombination stimulated by electrons captured from photogenerated excitons. *

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## Results of investigation of the processes of charge carrier photogeneration and relaxation within the exciplex absorption region in films of poly-N-epoxypropylcarbazole doped with the dye rhodamine 6G are given. When the films are illuminated with light from the dye absorption region, new centr