https://doi.org/10.15407/spqeo4.02.142
Semiconductor Physics, Quantum Electronics & Optoelectronics. 2001. V. 4, N 2. P. 142-145.
PACS: 78.55
Photoluminescence of pentacene solutions
in n-pentyl-n¢-cyanobiphenyl
Yu. Piryatinskiy, M. Furier, V. Nazarenko
Institute of Physics, NAS Ukraine, 46 Prospect Nauki, Kyiv, 03039, Ukraine
Abstract. We investigated photoluminescence (PL) spectra of pentacene (Pc) in the liquid- and solid-crystalline n-pentyl-n¢-cyanobiphenyl (5CB) matrices. It was shown that the liquid-crystalline matrix behaves as a polar solvent relatively to Pc. Pc and 5CB molecules can form loosely bound donor-acceptor complexes. These complexes may be characterized with their PL spectrum and lifetime that are different from those of molecular Pc. Being heated up to 343 K these complexes are broken down, and Pc molecular radiation is observed in the PL spectra of solutions.
Keywords: photoluminescence, pentacene, n-pentyl-n¢-cyanobiphenyl, donor-acceptor complex.
Paper received 27.04.00; revised manuscript received 03.02.01; accepted for publication 16.02.01.
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