Standard photovoltaic solar cells (PV cells) use only about half of the light spectrum provided by the sun. The infrared part is not utilized to produce electricity. Instead, the infrared light heats up the PV cells and thereby decreases the efficiency of the cell. Within this research project, a hybrid solar cell made of a standard PV cell and a thermally driven thermoelectric generator (TEG) is being developed. The light of the sun splits at about 800 nm. The visible and ultraviolet part is transferred to the PV cell; the infrared part illuminates the thermal TEG cell. With the hybrid solar cell, the full solar spectrum is exploited. In this paper, theoretical and experimental results for improving the performance of thermoelectric elements coupled with photovoltaic modules have been presented. The proposed concepts and the experimental results have provided a key input to develop a large scale of a hybrid PV-TE system.

中文翻译：

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为有效利用太阳辐射而进行的频谱分割：一种新型的光伏热电发电系统

标准的光伏太阳能电池（PV电池）仅使用太阳提供的光谱的大约一半。红外部分不用于发电。相反，红外线会加热PV电池，从而降低电池效率。在该研究项目中，正在开发由标准PV电池和热驱动热电发电机（TEG）组成的混合太阳能电池。太阳的光在约800 nm处分裂。可见光和紫外线部分被转移到PV电池；红外部分照亮热TEG电池。利用混合太阳能电池，可以充分利用整个太阳光谱。在本文中，提出了改善光伏组件与热电元件性能的理论和实验结果。