Facile Synthesis and High performance of a New Carbazole-Based Hole Transporting Material for Hybrid Perovskite Solar Cells

Hong Wang, Arif D. Sheikh, Quanyou Feng, Feng Li, Yin Chen, Weili Yu, Erkki Alarousu, Chun Ma, Mohammed Haque, Dong Shi, Zhong-Sheng Wang, Omar F. Mohammed, Osman Bakr, Tao Wu

Research output: Contribution to journalArticlepeer-review

89 Scopus citations

Abstract

Perovskite solar cells are very promising for practical applications owing to their rapidly rising power conversion efficiency and low cost of solution-based processing. 2,2’,7,7’-tetrakis-(N,N-di-p-methoxyphenylamine) 9,9’-spirobifluorene (Spiro-OMeTAD) is most widely used as hole transporting material (HTM) in perovskite solar cells. However, the tedious synthesis and high cost of Spiro-OMeTAD inhibit its commercial-scale application in the photovoltaic industry. In this article, we report a carbazole-based compound (R01) as a new HTM in efficient perovskite solar cells. R01 is synthesized via a facile route consisting of only two steps from inexpensive commercially available materials. Furthermore, R01 exhibits higher hole mobility and conductivity than the state-of-the-art Spiro-OMeTAD. Perovskite solar cells fabricated with R01 produce a power conversion efficiency of 12.03%, comparable to that obtained in devices using Spiro-OMeTAD in this study. Our findings underscore R01 as a highly promising HTM with high performance, and its facile synthesis and low cost may facilitate the large-scale applications of perovskite solar cells.
Original languageEnglish (US)
Pages (from-to)849-855
Number of pages7
JournalACS Photonics
Volume2
Issue number7
DOIs
StatePublished - Jul 7 2015

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