Dopant-Free Hole-Transport Material with a Tetraphenylethene Core for Efficient Perovskite Solar Cells

Hongwei Zhu, Fei Zhang, Xicheng Liu, Mengna Sun, Jianlei Han, Jing You, Shirong Wang, Yin Xiao, Xianggao Li

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13 Citations (Scopus)

Abstract

A hole-transport material (HTM), 1,1,2,2-tetrakis[4-(3,6-di-tert-butyl-9H-carbazol-9-yl)phenyl]ethene (TTBCPE), was prepared straightforwardly and employed in the fabrication of perovskite solar cells (PSCs). The investigated HTM with tetraphenylethene as the core and tert-butylcarbazole as terminal units was synthesized in two steps from commercially available and cheap raw materials. The devices based on TTBCPE without the use of any dopants and additives exhibited a power conversion efficiency (PCE) of 12.65 %, which is comparable to 14.46 % obtained by using devices based on 2,2′,7,7′-tetrakis(N,N′-di-p-methoxyphenylamino)-9,9′-spirobifluorene (p-doped spiro-OMeTAD). Importantly, the device based on TTBCPE showed a higher stability than devices based on doped spiro-OMeTAD if stored under ambient conditions. In this regard, this easily synthesized and dopant-free system paves a new way to develop low-cost HTMs.

Original languageEnglish
Pages (from-to)1257-1264
Number of pages8
JournalEnergy Technology
Volume5
Issue number8
DOIs
Publication statusPublished - Aug 2017

All Science Journal Classification (ASJC) codes

  • Energy(all)

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    Zhu, H., Zhang, F., Liu, X., Sun, M., Han, J., You, J., Wang, S., Xiao, Y., & Li, X. (2017). Dopant-Free Hole-Transport Material with a Tetraphenylethene Core for Efficient Perovskite Solar Cells. Energy Technology, 5(8), 1257-1264. https://doi.org/10.1002/ente.201600555