摘要： High electron injection efficiency is important for further development of dye-sensitized solar cells (DSSCs). Different electron acceptors have different electron injection capabilities, which affect device performance. Here, this article report on the effects of two organic triazatruxene (TAT)-based donor-π-bridge-acceptor sensitizers applied in DSSCs. The sensitizers had either rigid 4-ethynyl benzoic acid (EBA) or Z-type cyanoacrylic acid (CA) as their electron acceptor, denoted as ZL003 and ZL005, respectively. Time-resolved photoluminescence (TR-PL) spectroscopy was applied to reveal the electron transfer dynamics between the sensitizers and TiO2 films. Notably, ZL003 had higher electron injection efficiency compared with that of ZL005, which was consistent with the higher efficiency and photocurrent of devices based on the former. The dye loading of ZL003 was nearly twice as great as that of ZL005, which accounts for the lower photocurrent of the device. The charge recombination lifetimes for the two dyes were consistent with their open-circuit voltage. Consequently, the ZL003 based devices achieved a higher power conversion efficiency of 13.4% compared with only 7.2% for ZL005.