HIGH-EFFICIENCY HYBRID POLYMER SOLAR CELLS WITH INORGANIC P- AND N-TYPE SEMICONDUCTOR NANOCRYSTALS TO COLLECT PHOTOGENERATED CHARGES
Solar cells have been studied extensively in recent years as clean, sustainable and renewable energy sources due to the increasing global energy crisis. Polymer photovoltaic (PV) cells have evolved as promising alternatives to silicon-based solar cells due to their potential to be low-cost, light-weight and flexible. Significant progress with power conversion efficiency (PCE) approaching 7% has been made for polymer-fullerene derivative blends by finely manipulating the active-layer morphology and developing new PV polymer materials.1-4 lthough the donor/acceptor bulk heterojunction structure well overcomes limitation of short exciton diffusion length of semiconducting polymers (～10 nm) by providing abundant donor/acceptor interfaces for charge separation, low charge mobility of the semiconducting polymers is still a drawback for polymer PV technology, which influences the charge collection efficiency and the final PCE. Limited by low charge mobility of the semiconducting polymers, the active layer comprising polymer-fullerene derivative blend should be thin enough to match the short hole drift length and restrain current loss from charge recombination. However, the thin active layer would reduce the light-harvesting efficiency and hence hinder the further enhancement of PCE.
Shuyan Shao Fengmin Liu Zhiyuan Xie Lixiang Wang
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Graduate School of Chinese Academy of Sciences, Changchun 130022, Peoples Republic of China
国际会议
PP’2010，Jinan International Symposium on Polymer Physics(2010济南国际高分子物理学术研讨会)
济南
英文
372-373
2010-06-06（万方平台首次上网日期，不代表论文的发表时间）