Semitransparent organic solar cells (STOSCs) have received increasing attention due to promising applications such as building‐integrated photovoltaics. Successful commercialization requires that STOSCs are aesthetically pleasing as well as having balanced power conversion efficiencies (PCEs) and average visible transmittances (AVTs). Non‐fullerene acceptors, which possess excellent electrical/chemical properties, have helped STOSCs to achieve high PCE and AVT; however, research related to modulating color and appearance of STOSCs has lagged behind. Herein, narrow bandgap donor and acceptor (PTB7‐Th and IEICO‐4F) and ultra‐wide bandgap acceptors (T2‐ORH and T2‐OEHRH) are used to achieve semitransparency and controllable device coloration. Blend films with controllable colors including cyan → blue → purple → reddish purple colors are successfully demonstrated, which are controlled by ratios of IEICO‐4F:T2‐ORH or IEICO‐4F:T2‐OEHRH with PTB7‐Th. By incorporating semitransparent electrodes (comprising Sb₂O₃/Ag/Sb₂O₃), STOSCs with PCEs of 6–7% are achieved for cyan, aqua, indigo, and purple and ≈4% PCEs for reddish‐purple colors, with AVTs in the range of 23–35%. Moreover, optical properties of blend films are studied via absorption and transmission measurements, whereas the range of colors achieved is quantified using commission internationale de l'éclairage (CIE) chromaticity and CIE L * a * b* color space then represented as RGB color models.

中文翻译：

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利用三元混合物精确控制半透明，非富勒烯有机太阳能电池的着色

半透明有机太阳能电池（STOSC）由于具有前景的应用（例如建筑集成光伏）而受到越来越多的关注。成功的商业化要求STOSC在美学上令人愉悦，并且具有平衡的功率转换效率（PCE）和平均可见光透射率（AVT）。具有出色的电气/化学性能的非富勒烯受体帮助STOSC实现了较高的PCE和AVT。但是，与调节STOSC的颜色和外观有关的研究滞后。在此，窄带隙供体和受体（PTB7-Th和IEICO-4F）和超宽带隙受体（T2-ORH和T2-OEHRH）用于实现半透明和可控制的设备着色。已成功演示了具有可控制颜色的混合膜，包括青色→蓝色→紫色→红紫色，这些颜色由IEICO-4F：T2-ORH或IEICO-4F：T2-OEHRH与PTB7-Th的比率控制。通过掺入半透明电极（包含锑）₂ O ₃ / Ag / Sb ₂ O ₃），对于青色，水色，靛蓝和紫色，PCOS达到6–7％的STOSC，对于红紫色则达到≈4％的PCE，AVT的范围在23– 3 35％。此外，还通过吸收和透射测量研究了共混膜的光学性能，而使用国际照明委员会（CIE）色度和CIE L  *  a  *  b *颜色空间量化了所达到的颜色范围，然后将其表示为RGB颜色模型。 。