School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 102488 , P. R. China.
Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Photochemistry , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.
ACS Appl Mater Interfaces. 2018 Dec 5;10(48):41592-41598. doi: 10.1021/acsami.8b15423. Epub 2018 Nov 26.
By introducing six triarylamine groups to a hexaphenylbenzene (HPB) or a hexakis(2-thienyl)benzene (HTB) core, two propeller-shaped, triarylamine-rich, and low-cost hole-transporting materials (HTMs), which are termed as HPB-OMe and HTB-OMe, respectively, with considerable hole mobility, were obtained by easy synthetic routes. Solid-state planar perovskite CHNHPbI solar cells (PSCs) with two new HTMs showed high power conversion efficiencies (12.9% for HPB-OMe and 17.3% for HTB-OMe in forward scans) under standard 100 mW cm AM 1.5G illumination without doping. A comparison of matched-degree of energy levels, hole-transporting ability, photovoltaic conversion efficiencies, and recombination of the two HTMs indicated that developing multi-triarylamine- and thiophene-rich molecules provides candidate and efficient dopant-free HTMs for PSCs.
通过在六苯并苯（HPB）或六（2-噻吩基）苯（HTB）核心上引入六个三芳基胺基团，得到了两个螺旋桨状、富含三芳基胺且成本低廉的空穴传输材料（HTMs），分别称为 HPB-OMe 和 HTB-OMe，它们具有相当高的空穴迁移率，通过简单的合成路线获得。使用两种新型 HTMs 的固态平面钙钛矿 CHNHPbI 太阳能电池（PSCs）在标准 100 mW cm AM 1.5G 照明下无需掺杂即可实现高功率转换效率（HPB-OMe 为 12.9%，HTB-OMe 为 17.3%）。对两种 HTMs 的能级匹配程度、空穴传输能力、光伏转换效率和复合的比较表明，开发多三芳基胺和噻吩丰富的分子为 PSCs 提供了候选的高效无掺杂 HTMs。
