不同浓度的NiS_(2)-FeS_(2)/碳纳米纤维对电极对量子点敏化太阳能电池光伏性能的影响  

Effects of NiS_(2)-FeS_(2)/carbon nanofibers counter electrodes with different concentrations on the photovoltaic performance of quantum dot sensitized solar cells

作　　者：樊娆 王森阳 梁城洋 曹颖 耿仕通 李玲[1] FAN Rao;WANG Senyang;LIANG Chengyang;CAO Ying;GENG Shitong;LI Ling(Hebei Provincial Key Laboratory of Optic-electronic Information and Materials,Hebei Provincial Photovoltaic Technology Collaborative Innovation Center,College of Physics and Technology,Hebei University,Baoding 071002,China)

机构地区：[1]河北大学物理科学与技术学院,河北省光伏技术省部共建协同创新中心,河北省光电信息材料重点实验室,保定071002

出　　处：《复合材料学报》2023年第12期6681-6688,共8页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51772073);河北省自然科学基金重点项目(E2020201030);京津冀协同创新共同体建设专项(21344301D);河北大学2022年大学生创新创业计划训练资助项目(2022169,2022165,2022170)。

摘　　要：为了弥补量子点敏化太阳能电池传统Cu2S对电极在液态多硫化物电解液中易腐蚀、不稳定的缺陷,表现出更高的对电极电催化活性。本文通过静电纺丝技术和简单的一步水热法成功制备了碳纳米纤维负载的双金属硫化物NiS_(2)-FeS_(2)(NiS_(2)-FeS_(2)/CNFs)对电极,应用于量子点敏化太阳能电池(QDSSCs)中表现出优异的电化学性能。同时,不同浓度的NiS_(2)-FeS_(2)复合材料在SEM下表现出很大的差异,负载到碳纳米纤维制备成对电极对电池性能也有很大的影响。因此,本文重点探究了水热法制备不同浓度的NiS_(2)-FeS_(2)/CNFs对电极对其组装的QDSSCs光电性能影响,以获得最佳对电极浓度。实验结果表明:当NiS_(2)-FeS_(2)/CNFs浓度配比为0.8时,电池光电转换效率(PCE)达到最大值为8.05%。In order to compensate for the defects of the traditional Cu_(2)S counter electrode in the liquid polysulfide electrolyte,it shows higher electrocatalytic activity against the electrode.In this paper,carbon nanofibersupported bimetallic sulfide NiS_(2)-FeS_(2)(NiS_(2)-FeS_(2)/CNFs)counter electrode has been successfully prepared by electrospinning technology and a simple one-step hydrothermal method,which shows excellent electrochemical performance when applied to quantum dot sensitized solar cells(QDSSCs).At the same time,NiS_(2)-FeS_(2) composites with different concentrations show great differences under SEM,and the preparation of paired electrodes loaded with carbon nanofibers also has a great impact on the battery performance.Therefore,this paper focuses on exploring the effect of NiS_(2)-FeS_(2)/CNFs counter electrode with different concentrations prepared by hydrothermal method on the photoelectric performance of QDSSCs assembled by the counter electrode,so as to obtain the best counter electrode concentration.The experimental results show that when the NiS_(2)-FeS_(2)/CNFs concentration ratio is 0.8,the maximum photoelectric conversion efficiency(PCE)of the battery is 8.05%.

关 键 词：量子点敏化太阳能电池 双金属硫化物 对电极 浓度 光电性能 碳纳米纤维 

分 类 号：TQ174[化学工程—陶瓷工业] TB33[化学工程—硅酸盐工业]