Title :
Novel photomemory effects in conductivity and photoconductivity of photochromic dye-doped conducting polymer
Author :
Kawai, Tsuyoshi ; Kaneuchi, Yoshihiro ; Koshido, Takashi ; Yoshino, Katsumi
Author_Institution :
Dept. of Electron. Eng., Osaka Univ., Japan
Abstract :
We studied photoinduced changes in electrical and optical properties of two photochromic dye-doped conducting polymer systems which are composed of conducting polymers, poly(3-alkylthiophene)s (PAT-12 and PAT-18) and photochromic dyes of a diarylethene derivative (CMTE) and a spiropyran derivative (MINS). The CMTE-doped PAT-18 system showed unique photoisomerization-induced changes in the properties in the photo-excited states, while the MINS-doped PAT-12 system indicated a photoinduced change in the dark conductivity. The origins of these phenomena can be explained tentatively on the basis of photoisomerization-induced changes in probability of photoinduced charge and energy transfers and photoisomerization-induced change in the scattering efficiency for the charge carriers
Keywords :
conducting materials; conducting polymers; dark conductivity; isomerisation; photochemistry; photochromism; photoconductivity; CMTE-doped PAT-18; MINS-doped PAT-12; dark conductivity; diarylethene derivative; electrical properties; optical properties; photo-excited states; photochromic dye-doped conducting polymer; photoconductivity; photoisomerization; photomemory effect; poly(3-alkylthiophene); spiropyran derivative; Charge carriers; Charge transfer; Conducting materials; Conductivity; Indium tin oxide; Optical polymers; Organic light emitting diodes; Photochromism; Photoconductivity; Photoluminescence;
Conference_Titel :
Electrical Insulating Materials, 1995. International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
4-88686-047-8
DOI :
10.1109/ISEIM.1995.496581
