介孔碳-碳纳米管-硫化铜复合材料对电极的制备及其在量子点敏化太阳能电池中的应用

Mesoporous Carbon-Carbon Nanotube-Copper Sulfide Composite Counter Electrodes:Synthesis and Application in Quantum Dot Sensitized Solar Cells

首先研究了介孔碳(MC)、碳纳米管(CNT)和不同MC/CNT质量比(m_(MC)/m_(CNT))制备的MC-CNT二元复合材料对电极的光电转换效率(PCE),进一步加入预先水热合成的CuS纳米材料,制备出MC-CNT-CuS三元复合材料对电极,同时探讨了CuS添加量和膜厚对对电极PCE的影响。实验结果表明,当m_(MC)/m_(CNT)=3/2时,2种碳材料能最大程度地发挥协同作用,使电池性能最好,PCE达12.69%。再加入0.4 g CuS时PCE可进一步提高,且对电极印刷5层时最优,此时所组装的电池获得的PCE最高(13.18%)。

Mesoporous carbon(MC),carbon nanotube(CNT)and MC-CNT binary counter electrodes prepared with different MC/CNT weight ratios(m_(MC)/m_(CNT))were first studied on the power conversion efficiencies(PCE).Further,CuS nanomaterials pre-prepared through hydrothermal method were added into,and then MC-CNT-CuS ternary counter electrodes were synthesized.The influence of CuS content as well as film thickness on the efficiency was also probed.The experimental results showed that when m_(MC)/m_(CNT)=3/2,the synergistic effect of the two carbon mate-rials reached the maximum,resulting in the highest PCE of 12.69%for the binary MC-CNT counter electrode.The PCE after incorporation of 0.4 g CuS was improved to the highest value of 13.18% when the counter electrode was screen printed five times.