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Role of Spin States of Polymethine Dyes in the Generation of Electron-Hole Pairs |
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| Authors: | N. Kh. Ibrayev D. A. Afanasyev A. A. Ishchenko N. A. Davidenko |
| Affiliation: | 1. Institute of Molecular Nanophotonics, Buketov Karaganda State University , Karaganda , Kazakhstan;2. Institute of Organic Chemistry, National Academy of Sciences of Ukraine , Kiev , Ukraine;3. T. Shevchenko National University of Kiev , Ukraine |
| Abstract: | The spectral and luminescent properties of film composites based on photoconductive poly-N-epoxypropylcarbazole (PEPC) and electrically neutral polyvinylbutyral (PVB) with admixtures of polymethine dyes with various ionicities are studied. The external magnetic field effect on the spectral and luminescent properties of film composites based on PEPC with cationic polymethine and merocyanine dyes is studied. The magnetic field effect in the photogeneration of electron-hole pairs is explained by the participation of the singlet–triplet intersystem crossing of excited dye molecules. |
| Keywords: | Polymethine dye triplet electron-hole pair |