Kim, Jihun Lee, Horim Kim, Dong Young Seo, Yongsok 2024-01-20T04:03:24Z 2024-01-20T04:03:24Z 2021-09-03 2016-06 2046-2069 https://pubs.kist.re.kr/handle/201004/124030 Metal-free organic dyes comprising donor, electron-conducting, and acceptor moieties with anchoring groups were designed and synthesized for the sensitization of hierarchically structured TiO2 (HS-TiO2) nanoaggregates of TiO2 electrode. The performance of JH-2 in a dye sensitized solar cell (DSSC) was compared with the performances of JH-1 and PTD-02. The DSSC of JH-2 with the HS-TiO2 electrode yielded an unprecedented high photocurrent density of 21.62 mA cm(-2), an open circuit voltage of 691 mV and a fill factor of 0.631, and an overall efficiency of 9.42% under standard AM 1.5 sunlight. These were superior to those obtained from the JH-1 DSSC or the PTD-02 sensitizer, which has a chemical structure similar to JH-1, but displayed a much lower photocurrent density and efficiency. The performance of JH-2 DSSC developed here can offer an efficiency comparable to that of a popular ruthenium-coordinated dye (N719) while providing better long-term stability even without a UV filter. English ROYAL SOC CHEMISTRY Efficient dye-sensitized solar cells with broad absorption and enhanced photo-current generation Article 10.1039/c6ra06247d 1 RSC ADVANCES, v.6, no.62, pp.S6747 - S6755 RSC ADVANCES 6 62 S6747 S6755 N scie scopus 000378755200001 2-s2.0-84976345836 Chemistry, Multidisciplinary Chemistry Article ORGANIC-DYES SILYL-ANCHOR TRIPHENYLAMINE ELECTROLYTES FABRICATION STABILITY ENERGY organic dye DSSC hierarchical structure electro spray TiO2