Chang Jan-Kai, Huang Yu-Yun, Lin Ding-Lun, Tau Jieh-I, Chen Ting-Hao, Chen Mei-Hsin
Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 106, Taiwan.
Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei 106, Taiwan.
Sci Rep. 2020 Nov 17;10(1):20010. doi: 10.1038/s41598-020-77012-2.
In this work, by applying a transfer method simultaneously with a solution doping process for graphene as top electrodes, we demonstrate a solution-processed semitransparent organic photovoltaics (OPV). The work function of doped graphene under various doping conditions was investigated via photoemission spectroscopy. The transparent device was fabricated using PEDOT-doped graphene as electrodes, which provide an energetically favorable band alignment for carrier extractions. The solution-processed semitransparent organic photovoltaics exhibit the power conversion efficiency (PCE) of 4.2%, which is 85.7% of the PCE of control devices based on metallic reflecting electrodes, while maintaining good transparency at most visible wavelengths.
在这项工作中，通过将转移方法与石墨烯作为顶部电极的溶液掺杂过程同时应用，我们展示了一种溶液处理的半透明有机光伏器件（OPV）。通过光发射光谱研究了各种掺杂条件下掺杂石墨烯的功函数。使用PEDOT掺杂的石墨烯作为电极制造了透明器件，该电极可为载流子提取提供能量上有利的能带排列。溶液处理的半透明有机光伏器件的功率转换效率（PCE）为4.2%，是基于金属反射电极的对照器件PCE的85.7%，同时在大多数可见光波长下保持良好的透明度。
