Indoor solar cells are an attractive option to install in buildings to harvest the energy emitted by indoor lighting. They can be implemented as a stand-alone grid, or as part of an integrated energy harvesting unit. Previous research has utilized amorphous silicon and dye-sensitized solar cells for power generation from a fluorescent light source. In our study, we evaluated the applicability of a poly (3-hexylthiophene):indene-C60 bisadduct solar cell to harvest the light spectrum from an indoor light-emitting diode (LED). Because the absorption peak of poly (3-hexylthiophene) overlaps the LED spectrum peak, it serves as a good candidate for indoor light harvesting under an LED source. We have extracted the power conversion efficiency of the solar cell under different LED illuminance values, such as 200, 800, 1000, and 2000 lx. With the help of finite-difference time domain simulations, we optimized the solar device structure for each illuminance. The results detailed in this article were intended to assess the applicability of organic solar cells as indoor photovoltaics, and to provide a methodology to optimize the photovoltaic structure to maximize its efficiency.

室内太阳能电池是安装在建筑物中以收集室内照明发出的能量的一种有吸引力的选择。它们可以实现为独立电网，也可以实现为集成式能量收集单元的一部分。先前的研究已经利用非晶硅和染料敏化太阳能电池来通过荧光光源发电。在我们的研究中，我们评估了聚（3-己基噻吩）：茚-C60双加合物太阳能电池从室内发光二极管（LED）收集光谱的适用性。由于聚（3-己基噻吩）的吸收峰与LED光谱峰重叠，因此它是在LED光源下进行室内光收集的良好候选对象。我们已经提取了在不同的LED照度值（例如200、800、1000和2000 lx）下太阳能电池的功率转换效率。借助有限差分时域仿真，我们针对每种照度优化了太阳能设备的结构。本文详细介绍的结果旨在评估有机太阳能电池作为室内光伏电池的适用性，并提供一种优化光伏结构以最大化其效率的方法。