Dopant-free star-shaped hole-transport materials for efficient and stable perovskite solar cells

56Citations
Citations of this article
80Readers
Mendeley users who have this article in their library.

Abstract

Two star-shaped TPA-based small-molecule materials (Z1012 and Z1013) were designed and synthesized in this paper. These molecules show high hole mobility and suitable energy levels for CH3NH3PbI3-based perovskite solar cells. Photovoltaic cells based on the Z1013 without any dopants or additives achieve an excellent power conversion efficiency (PCE) of 15.4%, which is comparable to devices based on state-of-art p-doped spiro-OMeTAD. Moreover, the devices based on these two HTMs show much better stability than that of devices based on spiro-OMeTAD when aging in ambient air both at room temperature and 80 °C. These results demonstrate that star-shape TPAs could be excellent dopant-free HTMs for perovskite solar cells and hold promise to replace the p-doped spiro-OMeTAD, which is important for the fabrication of cost-effective and stable devices.

Cite

CITATION STYLE

APA

Zhang, F., Zhao, X., Yi, C., Bi, D., Bi, X., Wei, P., … Grätzel, M. (2017). Dopant-free star-shaped hole-transport materials for efficient and stable perovskite solar cells. Dyes and Pigments, 136, 273–277. https://doi.org/10.1016/j.dyepig.2016.08.002

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free