State Key Laboratory on Integrated Optoelectronics and ‡College of Electronic Science and Engineering, Jilin University , 2699 Qianjin Street, Changchun 130012, People's Republic of China.
ACS Appl Mater Interfaces. 2014 Jan 8;6(1):599-605. doi: 10.1021/am405274z. Epub 2013 Dec 23.
Efficient semitransparent polymer solar cells (ST-PSCs) have been fabricated with one-dimensional photonic crystals (1DPCs) as a high reflector. The 1DPCs are composed of several pairs of WO3 (65.8 nm)/LiF (95.5 nm). By optimizing the pairs of WO3/LiF, 1DPCs can reflect the light back into the ST-PSCs due to the photonic band gap, when the high reflectance range of 1DPCs is matched with absorption spectrum of the active layer. ST-PSCs with 8 pairs of 1DPC exhibit an attractive performance. The short-circuit current density (Jsc) and power conversion efficiency (PCE), respectively, reach to 9.76 mA/cm(2) and 5.16% compared to 8.12 mA/cm(2) and 4.24% of the reference ST-PSCs without 1DPCs. A maximum enhancement of 20.2% in Jsc is obtained and the PCE increases by ~21.7%. This approach provides a simple, fascinating and promising method to realize the highly efficient ST-PSCs toward applications.
高效半透明聚合物太阳能电池 (ST-PSCs) 已通过一维光子晶体 (1DPC) 作为高反射器制造。1DPC 由几对 WO3（65.8nm）/LiF（95.5nm）组成。通过优化 WO3/LiF 对，当 1DPC 的高反射率范围与活性层的吸收光谱匹配时，1DPC 可以由于光子带隙将光反射回 ST-PSCs。具有 8 对 1DPC 的 ST-PSCs 表现出吸引人的性能。与没有 1DPC 的参考 ST-PSCs 的 8.12mA/cm(2) 和 4.24%相比，短路电流密度 (Jsc) 和功率转换效率 (PCE) 分别达到 9.76mA/cm(2) 和 5.16%。获得了高达 20.2%的 Jsc 增强，PCE 提高了约 21.7%。该方法为实现高效 ST-PSCs 提供了一种简单、迷人且有前途的方法，有望应用于实际中。
