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Sun X, Xue Q, Zhu Z, Xiao Q, Jiang K, Yip HL, Yan H, Li Z. Fluoranthene-based dopant-free hole transporting materials for efficient perovskite solar cells. Chem Sci 2018; 9:2698-2704. [PMID: 29732053 PMCID: PMC5914136 DOI: 10.1039/c7sc05484j] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 02/01/2018] [Indexed: 12/19/2022] Open
Abstract
Significant efforts have been devoted to developing new dopant-free hole transporting materials (HTMs) for perovskite solar cells (PVSCs). Fluoranthene is one typical cyclopentene-fused polycyclic aromatic hydrocarbon with a rigid planarized structure, and thus could be an ideal building block to construct dopant-free HTMs, which have not been reported yet. Here, we report a new and simple synthetic method to prepare unreported 2,3-dicyano-fluoranthene through a Diels-Alder reaction between dibenzofulvene and tetracyanoethylene, and demonstrate that it can serve as an efficient electron-withdrawing unit for constructing donor-acceptor (D-A) type HTMs. This novel building block not only endows the resulting molecules with suitable energy levels, but also enables highly ordered and strong molecular packing in solid states, both of which could facilitate hole extraction and transport. Thus with dopant-free HTMs, impressive efficiencies of 18.03% and 17.01% which are associated with enhanced stability can be achieved based on conventional n-i-p and inverted p-i-n PVSCs respectively, outperforming most organic dopant-free HTMs reported so far.
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Affiliation(s)
- Xianglang Sun
- Key Laboratory for Material Chemistry of Energy Conversion and Storage , Ministry of Education , School of Chemistry and Chemical Engineering , Huazhong University of Science and Technology , 430074 , Wuhan , P. R. China .
| | - Qifan Xue
- Institute of Polymer Optoelectronic Materials and Devices , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , 510006 , Guangzhou , P. R. China
| | - Zonglong Zhu
- Department of Chemistry , Energy Institute and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong , China . ;
| | - Qi Xiao
- Key Laboratory for Material Chemistry of Energy Conversion and Storage , Ministry of Education , School of Chemistry and Chemical Engineering , Huazhong University of Science and Technology , 430074 , Wuhan , P. R. China .
| | - Kui Jiang
- Department of Chemistry , Energy Institute and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong , China . ;
| | - Hin-Lap Yip
- Institute of Polymer Optoelectronic Materials and Devices , State Key Laboratory of Luminescent Materials and Devices , South China University of Technology , 510006 , Guangzhou , P. R. China
| | - He Yan
- Department of Chemistry , Energy Institute and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , The Hong Kong University of Science and Technology , Clear Water Bay , Kowloon , Hong Kong , China . ;
| | - Zhong'an Li
- Key Laboratory for Material Chemistry of Energy Conversion and Storage , Ministry of Education , School of Chemistry and Chemical Engineering , Huazhong University of Science and Technology , 430074 , Wuhan , P. R. China .
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Van Haeringen CJ, Lugtenburg J, Cornelisse J. Synthesis and Characterization of Chloro-, Bromo-, Cyano-, Formyl-, and Methylfluoranthenes. Polycycl Aromat Compd 1996. [DOI: 10.1080/10406639608048330] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Dyke S, Sainsbury M, Brown D, Clipperton R. Some Diels-Alder reactions with 4-vinyl isoquinoline derivatives. Tetrahedron 1970. [DOI: 10.1016/0040-4020(70)80035-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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