螺环苯并吡唑/芴作为钙钛矿太阳能电池的空穴传输材料。
Spiro-Phenylpyrazole/Fluorene as Hole-Transporting Material for Perovskite Solar Cells.
机构信息
Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan.
Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan.
出版信息
Sci Rep. 2017 Aug 10;7(1):7859. doi: 10.1038/s41598-017-08187-4.
Spiro-OMeTAD with symmetric spiro-bifluorene unit has dominated the investigation of hole-transporting material (HTM) for efficient perovskite solar cells (PSCs) despite of its low intrinsic hole conductivity and instability. In this study, we designed and synthesized three asymmetric spiro-phenylpyrazole/fluorene base HTMs, namely: WY-1, WY-2 and WY-3. They exhibit excellent electrochemical properties and hole conductivities. Moreover, the PSC based on WY-1 exhibits the highest power conversion efficiency (PCE) of 14.2%, which is comparable to the control device employing spiro-OMeTAD as HTM (14.8%). These results pave the way to further optimization of both molecular design and device performance of the spiro-based HTMs.
具有对称螺二芴单元的 Spiro-OMeTAD 尽管本征空穴电导率低且不稳定，但仍主导了高效钙钛矿太阳能电池（PSC）的空穴传输材料（HTM）研究。在这项研究中，我们设计并合成了三种基于不对称螺苯并吡唑/芴的 HTM，即：WY-1、WY-2 和 WY-3。它们表现出优异的电化学性能和空穴电导率。此外，基于 WY-1 的 PSC 表现出最高的功率转换效率（PCE）为 14.2%，可与以 Spiro-OMeTAD 为 HTM 的对照器件（14.8%）相媲美。这些结果为进一步优化基于螺的 HTM 的分子设计和器件性能铺平了道路。
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