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发明授权
CN109585658B 一种高效率的基于聚(3-己基噻吩)的有机太阳电池 有权

一种高效率的基于聚(3-己基噻吩)的有机太阳电池
摘要：
本发明公开了一种高效率的基于聚(3‑己基噻吩)的有机太阳电池，它包括衬底、阴极、阴极修饰层、活性层、阳极修饰层和阳极，其中活性层为电子给体和电子受体的共混膜，电子给体是聚(3‑己基噻吩)(P3HT)，电子受体是非富勒烯受体DFPCBR。利用中心单元大的π共轭体系和强的给电子性，DFPCBR具有高的HOMO能级和LUMO能级，与P3HT的能级形成良好的匹配，抑制了能量损失，使太阳电池具有较高的开路电压。同时，DFPCBR的分子内电荷转移作用(ICT)增强，缩小了带隙，拓宽了吸收光谱。因此，本发明制备的有机太阳电池获得了较高的能量转换效率(PCE)，最高为5.34％。同时，本发明制备的有机太阳电池在活性层较厚的情况下依然能保持较高的PCE，有利于今后的实际应用。
摘要（英）：

The invention discloses a high-efficiency poly(3-hexylthiophene)-based organic solar cell. The high-efficiency poly(3-hexylthiophene)-based organic solar cell comprises a substrate, a cathode, a cathode modification layer, an active layer, an anode modification layer and an anode, wherein the active layer is a blend membrane of an electron donor and an electron acceptor. The electron donor is poly(3-hexylthiophene) (P3HT), and the electron acceptor is a non-fullerene acceptor DFPCBR. The large [Pi] conjugated system and the high donor-acceptor capacity of a center unit are employed, the DFPCBRhas a high HOMO energy level and LUMO energy level and is matched with the P3HT energy level to inhibit the energy loss and allow the solar cell to have a high open-circuit voltage. The intramolecular charge transfer (ICT) of the DFPCBR is enhanced, the band gap is shortened, and the absorption spectrum is broadened. Therefore, the organic solar cell prepared by the present invention achieves thehigh energy conversion efficiency (PCE) of up to 5.34%. At the same time, the organic solar cell prepared by the invention can maintain a high PCE even when the active layer is thick which is beneficial to practical applications in the future.

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