钙钛矿太阳能电池用Ag/ZrO_(2)/C柔性纳米纤维膜电极  

Ag/ZrO_(2)/C flexible nanofiber films-based counter electrode for perovskite solar cells

作　　者：辜宁霞 荆婉如 宁磊 吕芳洁 宋立新[1] 熊杰[1] GU Ning-xia;JING Wan-ru;NING Lei;LYU Fang-jie;SONG Li-xin;XIONG Jie(College of Textile Science and Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江理工大学纺织科学与工程学院,杭州310018

出　　处：《材料工程》2021年第9期79-86,共8页Journal of Materials Engineering

基　　金：浙江省自然科学基金项目(LQ19E030020)。

摘　　要：钙钛矿太阳能电池(perovskite solar cells,PSCs)因其制备简单、光电转化效率较高等优点而备受关注。静电纺碳纳米纤维膜(carbon nanofiber films,CNFs)具有高比表面积、良好的电学性能和化学稳定性,但其脆性限制了它的应用。利用静电纺丝法结合水热法制备柔性导电Ag/ZrO_(2)/C复合纳米纤维膜,然后将其应用于PSCs的对电极,研究不同Ag纳米颗粒添加量对柔性复合纳米纤维膜和电池的性能影响。结果表明:当银前驱体溶液质量浓度从0 g/mL增加至0.030 g/mL时,Ag/ZrO_(2)/C复合纳米纤维表面的Ag纳米颗粒的包覆越来越好,薄膜显示良好的柔韧性,其抗弯弹性模量为0.479 MPa,电导率从866 S/m增加到4862 S/m,提高了薄膜的空穴电子传输能力,进而增强PSCs的性能。当溶液质量浓度为0.030 g/mL时,器件具备最优的光电转换效率(6.05%)和最大电流(18.44 mA/cm 2)。Perovskite solar cells(PSCs)are paid much attention due to simple preparation and high photoelectric conversion efficiency.Carbon nanofiber films(CNFs)prepared by electrospinning have high specific surface area,electrical properties and chemical stability,but the application in PSCs is limited due to their brittleness.The flexible and conductive Ag/ZrO_(2)/C composite nanofiber films were prepared by electrospinning and hydrothermal method.After that,it was applied as the counter electrode of flexible PSCs and the effect of Ag nanoparticles with different concentrations on the performance of the composite nanofiber films and the PSCs were studied.The results show that when the concentration of precursor solution rises from 0 g/mL to 0.030 g/mL,the coating effect of Ag nanoparticles on the Ag/ZrO_(2)/C composite nanofiber improves obviously and all the composite nanofiber films display the excellent flexibility and modulus of elasticity(0.479 MPa),meanwhile,the conductivity of the films increases from 866 S/m to 4862 S/m,so as to enhance the hole-electron transport capacity of the films and the performance of flexible PSCs.When the solution concentration is 0.030 g/mL,the PSCs have best photoelectric conversion efficiency(PCE)of 6.05%and optimal current density(18.44 mA/cm 2).It is of great significance to further improve the performance of flexible PSCs and the application of flexible carbon nanofiber films.

关 键 词：钙钛矿太阳能电池 柔性复合纳米纤维膜电极 碳 二氧化锆 银 

分 类 号：O649[理学—物理化学]