Photoconductivity and photovoltaic effect of charge-transfer complex of poly[4-phenyl-2,6--(p-phenoxy) quinoline] and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone

Journal Article · Sat Nov 20 04:00:00 EST 1993 · Journal of Applied Polymer Science; (United States)

DOI:https://doi.org/10.1002/app.1993.070500814· OSTI ID:5849195

Choi, Donghoon; Lee, Eun Ju; Kim, Kyeongah; Park, Soo Young; Kim, Nakjoong ^[1]

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1. Korea Inst. of Science and Technology, Seoul (Korea, Republic of). Polymer Chemistry Lab.

A new polymer containing a heterocyclic quinoline unit in the main chain,poly[4-phenyl-2,6-(p-phenoxy) quinoline] (PQ), was synthesized by an acid-catalyzed self-condensation reaction. The authors have found that PQ, which is generally a good insulator itself, can show photoconductivity when doped with an electron acceptor. From the UV-VIS absorption spectra, they found that PQ can form a charge-transfer (CT) complex with an electron acceptor, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ). The CT complex of the PQ-DDQ mixture showed distinct photoconductivity. Employing the DDQ composition ranging from 5 to 10 wt %, the ratio of dark and photoconductivity was calculated to be about 1: 100 at an applied electric field of 10[sup 5] V/cm. Additionally,the bilayer sample of PQ/DDQ exhibited a significant photovoltaic current increased with increasing photointensity. The open-circuit voltage was measured ranging from 0.4 to 0.7 V and the photovoltaic conversion efficiency was calculated to be [sup [minus]3]--10[sup [minus]2]%. The PQ film treated with DDQ vapor showed a relatively higher photovoltaic effect than that of the sample treated with DDQ solution.

• OSTI ID: 5849195
• Journal Information: Journal of Applied Polymer Science; (United States), Journal Name: Journal of Applied Polymer Science; (United States) Vol. 50:8; ISSN 0021-8995; ISSN JAPNAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606* -- Other Materials-- Physical Properties-- (1992-)
ABSORPTION SPECTRA
ELECTRIC CHARGES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PHOTOCONDUCTIVITY
PHOTOELECTROMAGNETIC EFFECTS
PHOTOVOLTAIC EFFECT
PHYSICAL PROPERTIES
POLYMERS
SPECTRA