Semitransparent Organic Solar Cells with Viewing-Angle-Independent Janus Structural Colors,Advanced Optical Materials

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Semitransparent Organic Solar Cells with Viewing-Angle-Independent Janus Structural Colors
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2022-11-06 , DOI: 10.1002/adom.202201848
Jing De Chen ₁ , Hui‐Min Liu ₁ , Hao Ren ₁ , Ye‐Fan Zhang ₁ , Hong‐Yi Hou ₁ , Yan‐Qing Li ₂ , Zisheng Su ₃ , Jian‐Xin Tang _{1,

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Affiliation

Semitransparent organic solar cells (STOSCs) hold great promise for applications ranging from building-integrated photovoltaics to portable electronic devices, yet often challenging over the realization of color tunability. The structural colors generated by microcavity, subwavelength grating, or photonic crystals are highly dependent on the viewing angle, which limits the application of STOSCs in real scenarios. Herein, the spectrally selective substrates consisting of silica spheres-based amorphous photonic crystals (APCs) are proposed to unify the optical spectra of STOSCs at different viewing angles. By optimizing the periodicity of APCs, STOSCs exhibit viewing-angle-independent reflection with colors varying from blue to pink. The synergetic interplay between the reflection of APCs and the absorption of active layer results in the Janus optical effect that the transmitted light is fixed at blue regardless of the reflected color. The STOSCs on flexible plastic retain the stable color even at bending state. These results pave the way for the potential application of colorful solar photovoltaic glass curtains.

中文翻译：

具有视角独立的 Janus 结构色的半透明有机太阳能电池

半透明有机太阳能电池 (STOSC) 对从建筑一体化光伏到便携式电子设备的应用前景广阔，但在实现颜色可调性方面往往具有挑战性。微腔、亚波长光栅或光子晶体产生的结构色高度依赖于视角，这限制了STOSCs在实际场景中的应用。在此，提出了由基于二氧化硅球的非晶光子晶体（APC）组成的光谱选择性基板，以统一STOSC在不同视角下的光谱。通过优化 APC 的周期性，STOSC 表现出与视角无关的反射，颜色从蓝色到粉红色不等。APC 的反射与活性层的吸收之间的协同相互作用导致 Janus 光学效应，即无论反射颜色如何，透射光都固定为蓝色。柔性塑料上的 STOSC 即使在弯曲状态下也能保持稳定的颜色。这些结果为彩色太阳能光伏玻璃幕的潜在应用铺平了道路。

更新日期：2022-11-06

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