Synthesis and Photovoltaic Performance of Long Wavelength Absorbing Organic Dyes for Dye-Sensitized Solar Cells
作者:Sang Ah Kim、Hyo Jeong Jo、Mi Ran Jung、Young Cheol Choi、Do Kyung Lee、Moonyong Lee、Jae Hong Kim
DOI:10.1080/15421406.2011.601189
日期:2011.11.4
We prepared novel organic photo-sensitizers based on a carbazole framework containing various acceptors with thiophene bridge units in the chromophore for the application to dye-sensitized solar cell (DSSC). Furthermore, organic dyes without bridge in the chromophore also synthesized to investigate the correlation between conjugation lengths and photon-to-current efficiency (PCE). Compared to non-bridged dyes, the DSSCs device containing multi-anchoring dyes with thiophene bridge exhibited much higher PCEs, resulting from efficient electron extraction pathways, higher molar extinction coefficients, and better light absorption in longer wavelengths.