This report presents organic ternary bulk-heterojunctions (BHJ) active layers with record average visible transmittance (AVT). The incorporation of wide bandgap organic semiconductor PTAA as a third compound into the donor diluted PCE10 : COTIC-4F blend system increases AVT up to 81% and simultaneously enhances charge transport and photogeneration in the ultraviolet spectral range. Successive replacing COTIC-4F acceptor with SiOTIC-4F enhances the open-circuit voltage and elevates the opaque device performance from 4.41% to 5.77%, while maintaining the excellent AVT of the BHJ layer at around 80%. A comprehensive device physics analysis of the organic solar cells with optimized and reproducible opaque back electrode was conducted for understanding the generation–recombination processes in different donor : acceptor blends. Ultimately, semi-transparent OSCs (ST-OSCs) were fabricated utilizing the studied highly transparent ternary BHJ active layers demonstrating their potential for the development of semi-transparent photovoltaics.

中文翻译：

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用于半透明有机光伏的高透明三元体异质结


本报告介绍了具有创纪录的平均可见光透射率 （AVT） 的有机三元体异质结 （BHJ） 活性层。将宽带隙有机半导体 PTAA 作为第三种化合物掺入供体稀释的 PCE10 ： COTIC-4F 混合系统中，可将 AVT 提高高达 81%，同时增强紫外光谱范围内的电荷传输和光发生。用 SiOTIC-4F 连续替换 COTIC-4F 受体提高了开路电压，并将不透明器件性能从 4.41% 提高到 5.77%，同时将 BHJ 层的出色 AVT 保持在 80% 左右。对具有优化和可重复的不透明背电极的有机太阳能电池进行了全面的器件物理分析，以了解不同供体：受体混合物中的生成-复合过程。最终，利用所研究的高透明三元 BHJ 活性层制造了半透明 OSC （ST-OSC），展示了它们在开发半透明光伏方面的潜力。