A highly hindered bithiophene-functionalized dispiro-oxepine derivative as an efficient hole transporting material for perovskite solar cells

被引：79

作者：

Rakstys, Kasparas ^{[1
]}

Paek, Sanghyun ^{[1
]}

Sohail, Muhammad ^{[2
]}

Gao, Peng ^{[1
]}

Cho, Kyung Taek ^{[1
]}

Gratia, Paul ^{[1
]}

Lee, Yonghui ^{[1
]}

Dahmen, Klaus H. ^{[2
]}

Nazeeruddin, Mohammad Khaja ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, Grp Mol Engn Funct Mat, CH-1951 Sion, Switzerland

[2] HBKU, Qatar Fdn, QEERI, Doha, Qatar

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2016年 / 4卷 / 47期

关键词：

DONOR; LIGHT; CORE;

D O I：

10.1039/c6ta09028a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Dimethoxydiphenylamine-substituted dispiro-oxepine derivative 2,2',7,7'-tetrakis-(N,N'-di-4-methoxyphenylamine)dispiro-[fluorene-9,4'-dithieno(3,2-c:2',3'-e]oxepine-6',9 ''-fluorene] (DDOF) has been designed and synthesized using a facile synthetic route. The novel hole transporting material (HTM) was fully characterized and tested in perovskite solar cells exhibiting a remarkable power conversion efficiency of 19.4%. More importantly, compared with spiro-OMe-TAD-based devices, DDOF shows significantly improved stability. The comparatively comprehensive solid structure study is attempted to disclose the common features of good performance HTMs. These achievements clearly demonstrated that the highly hindered DDOF can be an effective HTM for the fabrication of efficient perovskite solar cells and further enlightened the rule of new HTM's design.

引用

页码：18259 / 18264

页数：6

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