全固态染料敏化纳米二氧化钛/铜酞菁复合太阳能电池(英文)

All-solid-state Dye Sensitized Nanocrystalline TiO_2 Solar Cell Based on Phthalocyanine Copper as a Hole Transporter

利用铜酞菁空穴传输材料制备了全固态染料敏化纳米TiO_2太阳能电池。研究了铜酞菁厚度对电池性能的影响,结构优化后,得到的性能参数,开路电压约为618mV,短路电流约为0.24mA/cm^2(氙灯照射,光强约为80mW/cm^2),注入因子为54.5％,总光电转换效率为0.1％。对铜酞菁层进行碘掺杂后,电池的短路电流得到了提高,而开路电压有所下降。电池暗反应研究表明,电流的升高是由于碘掺杂导致载流子浓度增大,载流子输运能力增强,电压的下降则是由于碘的掺入削弱了电池的整流特性。

All-solid-state dye-sensitized TiO2 solar cells with phthalocyanine copper (CuPc) as the hole transporting layer and cis-(SCN)2Bis(2,2'-bipyridyl-4,4'-dicarboxylate) ruthenium (N3) as the dye were fabricated. The thickness effect of CuPc layer was investigated which showed that there is an optimal thickness for the hole transporter. The cell shows an open-circuit voltage of -618 mV and a short-circuit current of -0.24 mA/cm2 at 80mW/cm2 ( Xenon lamp) , after optimization. The fill factor and the overall efficiency of the above cell are -54.5% and - 0.1% , respectively. An increase in short-circuit current and a decrease in open-circuit voltage were observed using I2 doped CuPc as the transporter. Studies of the back reaction showed that the increase of the short-circuit current was caused by increase of carrier concentration and carrier mobility, and the decrease of open-circuit voltage was due to the poorer rectifying property of the I2 doped cell.