ALUMINA POST-MODIFICATION AFTER DYE-SENSITIZATION: EFFECT ON THE PERFORMANCE OF QUASI-SOLID STATE SOLAR CELLS
In this paper, dye-sensitized TiO2 electrodes were immersed into a solution of aluminum isopropoxide and after hydrolysis quasi-solid state solar cells were fabricated. The interaction between the dye and the resulting Al2O3 overlayer was investigated by ultraviolet-visible (UV-vis) spectrum and X-ray photoelectron spectrum (XPS). I-V characteristics showed that the overlayer greatly increased photovoltage and slightly decreased photocurrent under irradiation of low intensity, and increased both photovoltage and photocurrent under AM 1.5 irradiation. The Al2O3 overlayer at the dye/electrolyte interface results in a 28％ improvement in overall photo-to-electrical conversion efficiency from 2.60％ to 3.32％ under illumination of light intensity 100 mW/cm2. Dark current measurements show that Al2O3 acting as insulator barriers to retard recombination between TiO2, dye/quasi-solid state electrolyte interface.
Fen Luo Liduo Wang Beibei Ma Yong Qiu
Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education Department of Chemistry Tsinghua University Beijing 100084, China
国际会议
2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)
北京
英文
2007-09-18（万方平台首次上网日期，不代表论文的发表时间）