Highly Transparent, Scalable, and Stable Perovskite Solar Cells with Minimal Aesthetic Compromise,Advanced Energy Materials

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Highly Transparent, Scalable, and Stable Perovskite Solar Cells with Minimal Aesthetic Compromise
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2022-06-07 , DOI: 10.1002/aenm.202200402
Tianran Liu _{1,

2} , Xiaoming Zhao ₁ , Ping Wang _{2,

3} , Quinn C. Burlingame ₃ , Junnan Hu ₂ , Kwangdong Roh _{2,

4} , Zhaojian Xu ₂ , Barry P. Rand _{2,

3} , Minjie Chen _{2,

3} , Yueh‐Lin Loo ₁

Affiliation

Transparent photovoltaics (TPVs) can be integrated into the surfaces of buildings and vehicles to provide point-of-use power without impacting aesthetics. Unlike TPVs that target the photon-rich near-infrared portion of the solar spectrum, TPVs that harvest ultraviolet (UV) photons can have significantly higher transparency and color neutrality, offering a superior solution for low-power electronics with stringent aesthetic tolerance. In addition to being highly transparent and colorless, an ideal UV-absorbing TPV should also be operationally stable and scalable over large areas while still outputting sufficient power for its specified application. None of today's TPVs meet all these criteria simultaneously. Here, the first UV-absorbing TPV is demonstrated that satisfies all four criteria by using CsPbCl_2.5Br_0.5 as the absorber. By precisely tuning the halide ratio during thermal co-evaporation, high-quality large-area perovskite films can be accessed with an ideal absorption cutoff for aesthetic performance. The resulting TPVs exhibit a record average visible transmittance of 84.6% and a color rendering index of 96.5, while maintaining an output power density of 11 W m⁻² under one-sun illumination. Further, the large-area prototypes up to 25 cm² are demonstrated, that are operationally stable with extrapolated lifetimes of >20 yrs under outdoor conditions.

中文翻译：

高度透明、可扩展且稳定的钙钛矿太阳能电池，且美观程度最小

透明光伏发电 (TPV) 可以集成到建筑物和车辆的表面，以提供使用点电力，而不影响美观。与针对太阳光谱中富含光子的近红外部分的 TPV 不同，收集紫外 (UV) 光子的 TPV 具有显着更高的透明度和颜色中性，为具有严格审美宽容度的低功耗电子产品提供了卓越的解决方案。除了高度透明和无色之外，理想的紫外线吸收 TPV 还应该在大面积上运行稳定且可扩展，同时仍为其指定应用输出足够的功率。当今的 TPV 均无法同时满足所有这些标准。在这里，第一个紫外线吸收 TPV 通过使用 CsPbCl _2.5 Br被证明满足所有四个标准_0.5作为吸收体。通过在热共蒸发过程中精确调节卤化物比例，可以获得高质量的大面积钙钛矿薄膜，并具有理想的吸收截止值，从而实现美观性能。所得TPV表现出创纪录的平均可见光透射率84.6%和96.5的显色指数，同时在单太阳光照下保持11 W m ^{-2的输出功率密度。}此外，还展示了高达 25 cm ^{2 的大面积原型，其在室外条件下运行稳定，外推寿命 >20 年。}

更新日期：2022-06-07

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