物理化学学报 >> 2014, Vol. 30 >> Issue (3): 453-459.doi: 10.3866/PKU.WHXB201312274

电化学和新能源 上一篇    下一篇

用CdSe/ZnS量子点提高体异质结有机太阳电池的效率

倪婷, 邹凡蒋, 玉蓉, 杨盛谊   

  1. 北京理工大学光电学院与物理学院, 纳米光子学与超精密光电系统北京市重点实验室, 北京100081
  • 收稿日期:2013-10-23 修回日期:2013-12-26 发布日期:2014-02-27
  • 通讯作者: 杨盛谊 E-mail:syyang@bit.edu.cn
  • 基金资助:

    国家自然科学基金(60777025),北京市科技新星合作项目(XXHZ201204),北京理工大学杰出中青年教师支持计划项目(BIT-JC-201005)以及光电成像与系统教育部重点实验室开放项目(2012OEIOF02)资助

To Improve the Efficiency of Bulk Heterojunction Organic Solar Cells by Incorporating CdSe/ZnS Quantum Dots

NI Ting, ZOU Fan, JIANG Yu-Rong, YANG Sheng-Yi   

  1. Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Optoelectronics and School of Physics, Beijing Institute of Technology, Beijing 100081, P. R. China
  • Received:2013-10-23 Revised:2013-12-26 Published:2014-02-27
  • Contact: YANG Sheng-Yi E-mail:syyang@bit.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (60777025), Cooperation Project of Beijing Nova Program, China (XXHZ201204), Foundation of Distinguished Young and Middle-aged Teacher at BIT (BIT-JC-201005) and Program from the Key Laboratory of Photoelectronic Imaging Technology and System (2012OEIOF02), Beijing Institute of Technology, Ministry of Education of China.

摘要:

通过掺杂吸收光谱在可见光波段的量子点可提高聚合物对可见光的吸收,因此掺杂CdSe/ZnS核-壳结构量子点(CQDs)能提高聚(3-己基噻吩):[6,6]-苯基-C61-丁酸甲酯(P3HT:PCBM)体异质结太阳电池的能量转换效率. 本文研究了CdSe/ZnS 量子点在P3HT:PCBM中的不同掺杂比例及其表面配体对太阳电池光伏性能的影响,优化器件ITO (氧化铟锡)/PEDOT:PSS (聚(3,4-乙撑二氧噻吩:聚苯乙烯磺酸)/P3HT:PCBM:(CdSe/ZnS)/Al 的能量转换效率达到了3.99%,与相同条件下没有掺杂量子点的参考器件ITO/PEDOT:PSS/P3HT:PCBM/Al相比,其能量转换效率提高了45.1%.

关键词: 体异质结太阳电池, CdSe/ZnS核-壳结构胶体量子点, 聚合物, 配体置换, 能量转换效率

Abstract:

The efficiency of bulk heterojunction solar cells was enhanced by incorporating CdSe/ZnS core-shell colloidal quantum dots (CQDs) into copolymers of poly(3-hexylthiophene (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as the active layer, as result of the increased absorption in the visible region. The doping of CdSe/ZnS CQDs in the active layer and the influence of CQD surface ligands on device performance were investigated. A maximum power conversion efficiency (PCE) of 3.99% was obtained from the optimized solar cell ITO/PEDOT:PSS/P3HT:PCBM:(CdSe/ZnS)/Al (ITO: indium-tin oxide; PEDOT: poly(3,4-ethylendioxythiophene; PSS: poly(styrenesulfonate)) under AM1.5 illumination. This was 45.1% improvement on the PCE of the control device ITO/PEDOT:PSS/P3HT:PCBM/Al.

Key words: Bulk heterojunction solar cell, CdSe/ZnS core-shell colloidal quantum dot, Polymer, Ligand exchange, Power conversion efficiency

MSC2000: 

  • O649