Tetraphenylbutadiene-Based Symmetric 3D Hole-Transporting Materials for Perovskite Solar Cells: A Trial Trade-off between Charge Mobility and Film Morphology.,ACS Applied Materials & Interfaces

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Tetraphenylbutadiene-Based Symmetric 3D Hole-Transporting Materials for Perovskite Solar Cells: A Trial Trade-off between Charge Mobility and Film Morphology.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-04-21 , DOI: 10.1021/acsami.0c02751
Jian Chen _{1,

2} , Jianxing Xia ₃ , Wei-Jie Gao ₁ , Hui-Juan Yu _{1,

2,

4} , Jun-Xing Zhong ₁ , Chunyang Jia ₃ , Yuan-Shou Qin ₅ , Zhigang She ₁ , Dai-Bin Kuang ₁ , Guang Shao _{1,

2,

4}

Affiliation

Two three-dimensional symmetric tetraphenylbutadiene derivatives decorated with diphenylamine or triphenylamine fragments are first prepared for use as hole-transporting materials (HTMs) in perovskite solar cells (PSCs). The HTMs are acquired using straightforward synthetic methods and facile purification techniques. The thermal stability, photophysical properties, electrochemical behaviors, computational study, hole mobility, X-ray diffraction, hole transfer dynamics, hydrophobicity, surface morphology, and photovoltaic performances of the HTMs are discussed. The highest power conversion efficiency (PCE) of CJ-04-based cell is 13.75%, which is increased to 20.06% when CJ-03 is used as HTM, superior to the PCE of the cell based on 2,2',7,7'-tetrakis(N,N-di-p-methoxyphenylamine)-9,9'-spirobifluorene (spiro-OMeTAD) (18.90%). The preparation cost of CJ-03 accounts for merely 23.1% of the price of commercial spiro-OMeTAD, while the concentration of CJ-03 solution used in the device fabrication (60.0 mg mL-1) is lower compared with that of the spiro-OMeTAD solution (72.3 mg mL-1). These results corroborate that the screw-like HTMs with a highly distorted configuration are facilely available and promising candidates for PSCs. More importantly, a practical solution is proposed to achieve moderate charge mobility and good film-formation ability of the HTMs simultaneously.

中文翻译：

用于钙钛矿太阳能电池的基于四苯丁二烯的对称3D空穴传输材料：电荷迁移率和薄膜形态之间的试验折衷。

首先准备了用二苯胺或三苯胺片段修饰的两个三维对称四苯基丁二烯衍生物，用作钙钛矿太阳能电池（PSC）中的空穴传输材料（HTM）。使用简单的合成方法和简便的纯化技术即可获得HTM。讨论了HTM的热稳定性，光物理性质，电化学行为，计算研究，空穴迁移率，X射线衍射，空穴传输动力学，疏水性，表面形态和光伏性能。基于CJ-04-的电池的最高功率转换效率（PCE）为13.75％，当将CJ-03用作HTM时，功率转换效率提高到20.06％，优于基于2,2'，7， 7'-四（N，N-二对甲氧基苯胺）-9,9'-螺二芴（spiro-OMeTAD）（18.90％）。CJ-03的制备成本仅占商业螺旋-OMeTAD价格的23.1％，而器件制造中使用的CJ-03溶液（60.0 mg mL-1）的浓度低于螺旋-OMeTAD。 OMeTAD溶液（72.3 mg mL-1）。这些结果证实了具有高度变形配置的螺钉状HTM容易获得，并且有望成为PSC的候选产品。更重要的是，提出了一种实用的解决方案，以同时实现HTM的适度电荷迁移率和良好的成膜能力。这些结果证实了具有高度变形配置的螺钉状HTM容易获得，并且有望成为PSC的候选产品。更重要的是，提出了一种实用的解决方案，以同时实现HTM的适度电荷迁移率和良好的成膜能力。这些结果证实了具有高度变形配置的螺钉状HTM容易获得，并且有望成为PSC的候选产品。更重要的是，提出了一种实用的解决方案，以同时实现HTM的适度电荷迁移率和良好的成膜能力。

更新日期：2020-04-07

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