Rakstys Kasparas, Paek Sanghyun, Grancini Giulia, Gao Peng, Jankauskas Vygintas, Asiri Abdullah M, Nazeeruddin Mohammad Khaja
Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, 1951, Sion, Switzerland.
Department of Solid State Electronics, Vilnius University, Sauletekio 3, Vilnius, 10222, Lithuania.
ChemSusChem. 2017 Oct 9;10(19):3825-3832. doi: 10.1002/cssc.201700974. Epub 2017 Aug 3.
The synthesis, characterization and photovoltaic performance of series of novel molecular hole transport materials (HTMs) based on bistricyclic aromatic enes (BAEs) are presented. The new derivatives were obtained following a simple and straightforward procedure from inexpensive starting reagents mimicking the synthetically challenging 9,9'-spirobifluorene moiety of the well-studied spiro-OMeTAD. The novel HTMs were tested in mixed cations and anions perovskite solar cells (PSCs) yielding a power conversion efficiency (PCE) of 19.2 % under standard global 100 mW cm AM1.5G illumination using 9-{2,7-bis[bis(4-methoxyphenyl)amino]-9H-fluoren-9-ylidene}-N ,N ,N ,N -tetrakis(4-methoxyphenyl)-9H-thioxanthene-2,7-diamine (coded as KR374). The power conversion efficiency data confirms the easily attainable heteromerous fluorenylidenethioxanthene structure as valuable core for low-cost and highly efficient HTM design and paves the way towards cost-effective PSC technology.
本文介绍了一系列基于双环芳烯（BAE）的新型分子空穴传输材料（HTM）的合成、表征及光伏性能。这些新衍生物是通过一种简单直接的方法，以廉价的起始试剂制得的，该方法模仿了研究充分的螺环-OMeTAD中合成具有挑战性的9,9'-螺二芴部分。在混合阳离子和阴离子钙钛矿太阳能电池（PSC）中对新型HTM进行了测试，在标准全球100 mW cm AM1.5G光照下，使用9-{2,7-双[双(4-甲氧基苯基)氨基]-9H-芴-9-亚基}-N,N,N,N-四(4-甲氧基苯基)-9H-噻吨-2,7-二胺（编码为KR374）时，功率转换效率（PCE）达到了19.2%。功率转换效率数据证实了易于获得的异质芴基亚基噻吨结构作为低成本、高效HTM设计的有价值核心，并为具有成本效益的PSC技术铺平了道路。
