Anomalous photovoltaic effect in ferroelectric polymers

Author

Matsushige, Kazumi ; Kato, Naoki ; Horiuchi, Toshihisa

Author_Institution

Dept. of Appl. Sci., Kyushu Univ., Fukuoka, Japan

fYear

1990

fDate

6-8 Jun 1990

Firstpage

647

Lastpage

649

Abstract

The generation of photocurrents in two kinds of ferroelectric polymers, polyvinylidene fluoride (PVDF) and (VDF/TrFE) copolymer, was examined. The photocurrents were observed only below their Curie points, suggesting that the internal field within the samples plays an essential role. Also, the open circuit voltage exceeded the limitation of the bandgap, revealing the characteristic of the anomalous photovoltaic effect. The efficiency of the photoelectrical conversion could be improved by overlaying a Se layer as a carrier injection layer. The maximum voltage detected for a PVDF sample of 25-μm thickness was over 150 V, which corresponds to an electric field of 6 MV/m

Keywords

ferroelectric materials; photovoltaic effects; polymers; PVDF; Se; carrier injection layer; efficiency; ferroelectric polymers; internal field; open circuit voltage; photocurrents; photoelectrical conversion; photovoltaic effect; polyvinylidene fluoride; vinylidene fluoride trifluoroethylene copolymer; Circuits; Conducting materials; Ferroelectric materials; Lighting; Organic materials; Photovoltaic effects; Photovoltaic systems; Polymers; Solar power generation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 1990., IEEE 7th International Symposium on

Conference_Location

Urbana-Champaign, IL

Print_ISBN

0-7803-0190-0

Type

conf

DOI

10.1109/ISAF.1990.200336

Filename

200336