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首页> 外文期刊>Advanced Materials >Enhanced Light Utilization in Semitransparent Organic Photovoltaics Using an Optical Outcoupling Architecture
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Enhanced Light Utilization in Semitransparent Organic Photovoltaics Using an Optical Outcoupling Architecture

机译：使用光输出耦合架构增强半透明有机光伏的光利用率

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Building-integrated photovoltaics employing transparent photovoltaic cells on window panes provide an opportunity to convert solar energy to electricity rather than generating waste heat. Semitransparent organic photovoltaic cells (ST-OPVs) that utilize a nonfullerene acceptor-based near-infrared (NIR) absorbing ternary cell combined with a thin, semitransparent, high conductivity Cu-Ag alloy electrode are demonstrated. A combination of optical outcoupling and antireflection coatings leads to enhanced visible transmission, while reflecting the NIR back into the cell where it is absorbed. This combination of coatings results in doubling of the light utilization efficiency (LUE), which is equal to the product of the power conversion efficiency (PCE) and the average photopic transparency, compared with a conventional semitransparent cell lacking these coatings. A maximum LUE = 3.56 +/- 0.11% is achieved for an ST-OPV with a PCE = 8.0 +/- 0.2% at 1 sun, reference AM1.5G spectrum. Moreover, neutral colored ST-OPVs are also demonstrated, with LUE = 2.56 +/- 0.2%, along with Commission Internationale d'Eclairage chromaticity coordinates of CIE = (0.337, 0.349) and a color rendering index of CRI = 87.
机译：在窗玻璃上采用透明光伏电池的建筑一体化光伏产品提供了将太阳能转化为电能的机会，而不是产生废热。演示了半透明有机光伏电池（ST-OPV），该电池利用了基于非富勒烯受体的近红外（NIR）吸收三元电池，并结合了薄，半透明，高电导率的Cu-Ag合金电极。光学外耦合和减反射涂层的结合可提高可见光透射率，同时将NIR反射回细胞中并被吸收。与缺少这些涂层的常规半透明电池相比，这种涂层的组合导致光利用效率（LUE）翻倍，这等于功率转换效率（PCE）与平均明晰透明性的乘积。 ST-OPV的最大LUE = 3.56 +/- 0.11％，在1个太阳下，参考AM1.5G光谱的PCE = 8.0 +/- 0.2％。此外，还展示了中性色ST-OPV，LUE = 2.56 +/- 0.2％，以及国际照明委员会CIE =（0.337，0.349）的色度坐标和显色指数CRI = 87。

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