| Co-Investigator(Kenkyū-buntansha) |
MINOURA Hideki GIFU UNIVERSITY, GRADUATE SCHOOL OF ENGINEERING, PROFESSOR, 大学院工学研究科, 教授 (40021612)
YOSHIDA Tsukasa GIFU UNIVERSITY, GRADUATE SCHOOL OF ENGINEERING, ASSOCIATE PROFESSOR, 大学院工学研究科, 助教授 (90273127)
|
|---|
| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2006: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2005: ¥2,700,000 (Direct Cost: ¥2,700,000)
|
|---|
| Research Abstract |
Application of a series of organic dyes for zinc oxide solar cells prepared by the one-step cathode deposition template method was examined. Following informations were obtained :
1) Cell performance was improved by introducing long alkyl group at the indole moiety in semisquaric acids. The incident photon-to-current efficiency (IPCE) was improved to 38.0%.
2) The addition of deoxycholic acid was effective for oxazines dyes. IPCE and solar-light-to-electricity conversion efficiency (η) were improved to 6.91 and 0.29%, respectively.
3) Among 2',4',5',7'-tetrafluoro-, -tetrachloro-, tetrabromo- (eosin Y), and -tetraiodo fluorescein derivatives, the IPCE value was in the following order : I (73%) > Cl (69%), Br (65%) > H (40%) > F (24%).
4) Carboxy group was best as an anchor group in squarylium dyes.
5) A N-Carboxyethyl indolenium derivative showed the best performance in heptamethinecyanine dyes. An Ethylcyclohexenyl derivative showed the best performance : IPCE (29%), J_<sc>(2.01 mA cm^<-2>). When dimethyl group was changed to dibuthyl group, short-circuit photocurrent density (J_<sc>) value increased to 2.30 mA cm^<-2>.
6) 3-(2-Carboxyethyl)-2-[4-(dimethylamino)styryl]benzothiazolium iodide showed the best performance as the sensitizer in flexible zinc oxide solar cell. The IPCE at around 490 nm,.J_<sc>, open-circuit photovoltage (V_<oc>), fill factor (ff), and η were observed to be 54.5 %, 6.22 mA cm^<-2>, 0.53 V, 0.59, and 1.94 %, respectively.
|
