INSTM , Cagliari Unit , Via Giuseppe Giusti, 9 , I-50121 Firenze , Italy.
ACS Appl Mater Interfaces. 2019 Mar 13;11(10):10021-10027. doi: 10.1021/acsami.8b22285. Epub 2019 Feb 27.
An optical radiometry technique enabling simultaneous transmittance and reflectance measurements from both sides of a device was used to investigate bifacial diffuse absorptance of neutral-colored semitransparent perovskite solar cells based on a thin film of microsized perovskite islands. In such microstructured solar cells, diffuse irradiance was more effectively absorbed than direct irradiance at near-normal incidence, in contrast to reference solar cells comprising a continuous perovskite thin film. Experimental findings were discussed in ray-optic approximation in relation to the surface texture of the active layer, highlighting the role of light trapping. This absorptance spectroscopy technique is envisaged to find wide applicability to bifacial solar cells for building-integrated photovoltaics and other bifacial light-harvesting systems.
一种能够从器件两侧同时进行透射和反射测量的光学辐射测量技术，用于研究基于微尺寸钙钛矿岛薄膜的中性色半透明钙钛矿太阳能电池的双面漫反射吸收率。在这种微结构太阳能电池中，与包含连续钙钛矿薄膜的参考太阳能电池相比，在近垂直入射时，漫射辐照比直射辐照更有效地被吸收。实验结果在光线光学近似的基础上进行了讨论，涉及到活性层的表面纹理，突出了光捕获的作用。这种吸收光谱技术预计将广泛适用于用于建筑集成光伏和其他双面光收集系统的双面太阳能电池。
