Jia Jingwen, Duan Liangsheng, Chen Yu, Zong Xueping, Sun Zhe, Wu Quanping, Xue Song
Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry & Chemical Engineering, Tianjin University of Technology Tianjin 300384 PR China
RSC Adv. 2019 Jan 2;9(1):216-223. doi: 10.1039/c8ra08946a. eCollection 2018 Dec 19.
Three triphenylamine derivatives containing ferrocenyl groups (JW6, JW7 and JW8) were synthesized by facile syntheses. Their HOMO levels match the valence band energy of CHNHPbI. The introduction of ferrocenyl was aimed to obtain hole transporting materials with high mobility for perovskite solar cells. JW7 shows higher hole mobility (4.2 × 10 cm V s) than JW6 (1.3 × 10 cm V s) and JW8 (1.5 × 10 cm V s). Their film-forming properties are affected by their molecule structures. The methoxyl and ,-dimethyl terminal substituents of JW7 and JW8 are beneficial for having better solubility than JW6. The regular mesoporous TiO-based perovskite solar cells (n-i-p) and the inverted planar heterojunction perovskite solar cells (p-i-n) fabricated using JW7 show the highest power conversion efficiency of 9.36% and 11.43% under 100 mW cm AM1.5G solar illumination. For p-i-n cells, the standard HTM PEDOT-based cell reaches an efficiency of 12.86% under the same conditions.
通过简便的合成方法制备了三种含二茂铁基的三苯胺衍生物（JW6、JW7和JW8）。它们的最高占据分子轨道（HOMO）能级与CHNHPbI的价带能量相匹配。引入二茂铁基旨在获得用于钙钛矿太阳能电池的具有高迁移率的空穴传输材料。JW7显示出比JW6（1.3×10 cm²V⁻¹s⁻¹）和JW8（1.5×10 cm²V⁻¹s⁻¹）更高的空穴迁移率（4.2×10 cm²V⁻¹s⁻¹）。它们的成膜性能受其分子结构影响。JW7和JW8的甲氧基以及α,α-二甲基末端取代基有利于使其具有比JW6更好的溶解性。使用JW7制备的常规介孔TiO₂基钙钛矿太阳能电池（n-i-p）和倒置平面异质结钙钛矿太阳能电池（p-i-n）在100 mW cm⁻²AM1.5G太阳光照下分别显示出9.36%和11.43%的最高功率转换效率。对于p-i-n电池，在相同条件下基于标准空穴传输材料PEDOT的电池效率达到12.86%。
