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Highly‐Transparent and True‐Colored Semitransparent Indoor Photovoltaic Cells
Small Methods ( IF 10.7 ) Pub Date : 2020-05-10 , DOI: 10.1002/smtd.202000136 Hang Yin 1 , Johnny Ka Wai Ho 1 , Venkatesh Piradi 2 , Song Chen 2 , Xunjin Zhu 2 , Shu Kong So 1
Small Methods ( IF 10.7 ) Pub Date : 2020-05-10 , DOI: 10.1002/smtd.202000136 Hang Yin 1 , Johnny Ka Wai Ho 1 , Venkatesh Piradi 2 , Song Chen 2 , Xunjin Zhu 2 , Shu Kong So 1
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Organic photovoltaic (OPV) cells are promising indoor light energy harvesters because organic materials absorb strongly in the visible range. An indoor photovoltaic (IPV) device is an effective tool for the remote off‐grid wireless charging. However, as the indoor light fluxes are much weaker than the 1‐Sun condition, high‐performance indoor cells should have large areas in order to generate appreciable energies. They would then appear as flat, but expansive and dark objects if deployed indoors. Their presence would then alter the indoor lighting environment and affect visual perceptions. This work addresses the lighting and perception issues of IPV cells in three ways. i) A concept is proposed such that a high‐efficiency, semitransparent indoor OPV cell should possess an absorbance which is mismatched with the emission spectra of the light sources. ii) It is demonstrated that bulk heterojunction (BHJ) OPV solar cells with porphyrin donors can serve as high‐transparency and high‐efficiency indoor light harvesters. iii) Quantitative assessment criteria are presented for the transparency and chromaticity of an indoor semitransparent OPV cell, demonstrating that porphyrin‐based P2:PC71BM semitransparent BHJ cells can achieve a power conversion efficiency (PCE) exceeding 10%, and an illuminance transparency ~65%, while preserving the color perception of the light sources.
中文翻译：
高透明和真彩色半透明室内光伏电池
有机光伏（OPV）电池是有前途的室内光能收集器，因为有机材料在可见光范围内会强烈吸收。室内光伏（IPV）设备是用于远程离网无线充电的有效工具。但是，由于室内光通量比1阳光条件弱得多，因此高性能室内电池应具有较大的面积，以产生可观的能量。如果将它们部署在室内，它们将看起来像是平坦但膨胀且黑暗的物体。它们的存在会改变室内照明环境并影响视觉感知。这项工作以三种方式解决了IPV电池的照明和感知问题。i）提出了一个概念，即高效，半透明室内OPV电池应具有与光源的发射光谱不匹配的吸收率。ii）证明具有卟啉供体的体异质结（BHJ）OPV太阳能电池可以用作高透明度和高效率的室内集光器。iii）提出了室内半透明OPV池的透明度和色度的定量评估标准，表明基于卟啉的P2：PC71个BM半透明BHJ电池可以实现超过10％的功率转换效率（PCE），并且照明透明度约为65％，同时保留光源的色彩感。
更新日期：2020-05-10
中文翻译：
高透明和真彩色半透明室内光伏电池
有机光伏（OPV）电池是有前途的室内光能收集器，因为有机材料在可见光范围内会强烈吸收。室内光伏（IPV）设备是用于远程离网无线充电的有效工具。但是，由于室内光通量比1阳光条件弱得多，因此高性能室内电池应具有较大的面积，以产生可观的能量。如果将它们部署在室内，它们将看起来像是平坦但膨胀且黑暗的物体。它们的存在会改变室内照明环境并影响视觉感知。这项工作以三种方式解决了IPV电池的照明和感知问题。i）提出了一个概念，即高效，半透明室内OPV电池应具有与光源的发射光谱不匹配的吸收率。ii）证明具有卟啉供体的体异质结（BHJ）OPV太阳能电池可以用作高透明度和高效率的室内集光器。iii）提出了室内半透明OPV池的透明度和色度的定量评估标准，表明基于卟啉的P2：PC71个BM半透明BHJ电池可以实现超过10％的功率转换效率（PCE），并且照明透明度约为65％，同时保留光源的色彩感。
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