Enhancing the Performance of Polymer Photovoltaic Cells by Using an Alcohol Soluble Fullerene Derivative as the Interfacial Layer
journal contribution
posted on 2016-02-18, 23:37 authored by Qiang Mei, Cuihong Li, Xue Gong, Heng Lu, Enquan Jin, Chun Du, Zhen Lu, Li Jiang, Xiangyue Meng, Chunru Wang, Zhishan BoAlcohol
soluble fullerene derivative (<b>FN-C60</b>) has been synthesized
and used as a cathode interfacial layer for high-efficiency polymer
solar cells (PSCs). To examine the function of the <b>FN-C60</b> interfacial layer, polymer solar cells were fabricated with blends
of <b>P3</b>:PC<sub>71</sub>BM, <b>HXS-1</b>:PC<sub>71</sub>BM, <b>PDFCDTBT</b>:PC<sub>71</sub>BM, and <b>PDPQTBT</b>:PC<sub>71</sub>BM as the active layer. In comparison to the bare
Al electrode, power conversion efficiencies (PCEs) of <b>P3</b>:PC<sub>71</sub>BM, <b>HXS-1</b>:PC<sub>71</sub>BM, <b>PDFCDTBT</b>:PC<sub>71</sub>BM, and <b>PDPQTBT</b>:PC<sub>71</sub>BM based
PSCs were increased from 3.50 to 4.64%, 4.69 to 5.25%, 2.70 to 4.60%,
and 1.52 to 2.29%, respectively, when <b>FN-C60</b>/Al was used
as the electrode. Moreover, the overall photovoltaic performances
of PSCs with the <b>FN-C60</b>/Al electrode were better than
those of cells with LiF/Al electrode, indicating that <b>FN-C60</b> is a potential interfacial layer material to replace LiF.
