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电化学(中英文) ›› 2016, Vol. 22 ›› Issue (4): 404-411.  doi: 10.13208/j.electrochem.160146

• 光电化学及新型太阳能电池近期研究专辑(厦门大学林昌健教授&中国科学院化学研究所李永舫院士主编) • 上一篇    下一篇

三种CuS对电极的制备及其对量子点敏化太阳能电池光电性能的影响

洪晓丹1,许子颉1,张发荫1,3,李宇鹏1,叶美丹1*,林昌健1,2,郭文熹1   

  1. 1. 生物仿生与软物质研究院,福建省柔性功能材料重点实验室,物理系,物理科学与技术学院,厦门大学,厦门361005;2. 固体表面物理化学国家重点实验室,化学系,化学化工学院,厦门大学,厦门361005;3. 纤维材料改性国家重点实验室,材料科学与工程学院,东华大学,上海201620
  • 收稿日期:2016-03-16 修回日期:2016-05-10 出版日期:2016-08-29 发布日期:2016-05-18
  • 通讯作者: 叶美丹 E-mail:mdye@xmu.edu.cn
  • 基金资助:

    国家自然科学基金(Nos.21503177),中央高校基本科研业务费(NO.20720150031)、高等学校学科创新引智计划(“111 计划”,B16029)资助

Fabrications of three copper sulfide counter electrodes and their influences on photovoltaic properties in QDSSCs

HONG Xiao-dan1, XU Zi-jie1, ZHANG Fa-yin1,3, LI Yu-peng1,YE Mei-dan1*, LIN Chang-jian1,2, GUO Wen-xi1   

  1. 1. Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Lab for Soft Functional Materials Research, Department of Physics, College of Physical Science and Technology, Xiamen University, Xiamen 361005; 2. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemistry Engineering, Xiamen University, Xiamen 361005; 3. The State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P.R. China.
  • Received:2016-03-16 Revised:2016-05-10 Published:2016-08-29 Online:2016-05-18
  • Contact: YE Mei-dan E-mail:mdye@xmu.edu.cn

摘要:

近几年,量子点敏化太阳能电池因其具有低成本、易合成、高的光电转换效率等优点而广受关注. 半导体金属硫化物具有良好的物理和化学性质,被广泛应用于各个领域,其中,铜硫化物凭借其优异的电化学催化活性,而成为量子点敏化太阳能电池良好的对电极材料. 本文通过3种不同的方法在FTO表面生长CuS纳米阵列(依次记为CuS-1、CuS-2、CuS-3),并对样品进行晶相表征、表面形貌分析、电化学性能测试以及相应量子点敏化太阳能电池器件组装,最终发现CuS-3样品具有最优的光电性能.

关键词: 硫化铜, 对电极, 量子点敏化太阳能池

Abstract:

Quantum dot-sensitized solar cells (QDSSCs) have attracted intensive attention in scientific and industrial fields due to their high molar extinction coefficient, spectral tunability by particle size, ease of fabrication, and low cost. In the past years, semiconductor metal sulfides have attracted extensive attention because of their attractive physical and chemical properties for potential applications in many fields,such as PbS, CuS, CoS and CdS. In particular, copper sulfides have become a promising candidate for counter electrode materials in QDSSCs for their outstanding electrochemical and catalytic properties. In order to explore more stable and efficient copper sulfide counter electrode materials, in this work, we used three different methods to synthesize copper sulfide nanosheet arrays (marked as CuS-1, CuS-2, CuS-3), which were then characterized by XRD, SEM and electrochemical workstation. XRD patterns showed that all the three samples were copper sulfide (Cu:S = 1:1). And SEM images revealed that the fabrication methods of CuS significantly affected their morphologies. . The obtained CuS-1, CuS-2 and CuS-3 nanosheet arrays exhibited enhanced PCEs up to 2.92%,2.58% and 3.27%, respectively, when used as CEs in QDSSCs, implying increases of 87%,65% and 109% as compared to Pt-based QDSSCs, respectively. Through all the characterizations, we found that the CuS-3 showed the best catalytic activity in the reduction of polysulfide electrolyte among the three samples.

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