Jiang Bing-Huang, Lee He-En, Lu Jong-Hong, Tsai Tsung-Han, Shieh Tien-Shou, Jeng Ru-Jong, Chen Chih-Ping
Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan.
Institute of Polymer Science and Engineering, National Taiwan University, Taipei 106, Taiwan.
ACS Appl Mater Interfaces. 2020 Sep 2;12(35):39496-39504. doi: 10.1021/acsami.0c10906. Epub 2020 Aug 24.
In this study, we designed a surface phase-matched transmission enhancement top electrode-Ag/indium tin oxide (ITO) structure for highly efficient and aesthetic semitransparent organic photovoltaics (ST-OPVs). The purposed highly transparent back electrodes (Ag/ITO) could selectively decrease visible reflection and increase transparency accordingly. By altering the thicknesses of the Ag and ITO layers, we could control the transmittance curve and increase the transparency of the ST-OPV devices. Devices based on PTB7-Th:IEICO-4F and PM6:Y6:PCBM displayed outstanding performance (8.1 and 10.2%, respectively) with high photopic-weighted visible light transmittance (36.2 and 28.6%, respectively). The outstanding visible and near-infrared light harvesting of PM6:Y6:PCBM further allowed a new application: double-sided energy harvesting from solar and indoor illumination. The simple optical design of a top electrode displaying high transparency/conductivity has a wide range of potential applications in, for example, greenhouse photovoltaics, tandem cells, and portable devices.
在本研究中，我们设计了一种表面相位匹配传输增强顶电极 - 银/氧化铟锡（ITO）结构，用于高效且美观的半透明有机光伏电池（ST-OPV）。目标高透明背电极（Ag/ITO）能够相应地选择性降低可见光反射并提高透明度。通过改变银和ITO层的厚度，我们可以控制透射率曲线并提高ST-OPV器件的透明度。基于PTB7-Th:IEICO-4F和PM6:Y6:PCBM的器件表现出色（分别为8.1%和10.2%），具有高光视加权可见光透射率（分别为36.2%和28.6%）。PM6:Y6:PCBM出色的可见光和近红外光捕获能力进一步带来了一种新应用：从太阳能和室内照明进行双面能量收集。具有高透明度/导电性的顶电极的简单光学设计在例如温室光伏、串联电池和便携式设备等方面具有广泛的潜在应用。
