Jump to main content
Jump to site search


Molecular Design with Silicon Core: Toward Commercially Available Hole Transport Materials for High-Performance Planar p-i-n Perovskite Solar Cells

Abstract

Organic hole transport layer (HTL) play very important role for realizing high performance and low-cost planar p-i-n perovskite solar cells (pero-SCs). In this work, we synthesized two X-shaped organic HTL materials Si-OMeTPA and SiTP-OMeTPA with silicon cores and triphenylamine (TPA) derivative branches. This molecular design strategy can substantially simplify synthetic procedure making them available for reducing device cost. Particularly for Si-OMeTPA, it can be synthesized by two steps from commercial raw materials showing a total yield of over 60%. This molecular design Si-OMeTPA possesses advantages of high thermal stability, high crystallinity with a long range ordered lamellar structure, and excellent hole mobility. The resulting HTL can also facilitate the sequent growth of high-quality perovskite films, giving a significantly enhanced photovoltaic performance with a best power conversion efficiency of 19.06%, which is one of the highest PCE among the planar p-i-n pero-SCs to date. In addition, the devices exhibit negligible hysteresis, good reproducibility and stability. To the best of our knowledge, this is the first example of an easily synthesized HTL materials in planar p-i-n pero-SCs that shows even superior performance relative to the well-known poly(bis(4-phenyl)(2,4,6-trimethylphenyl)amine) (PTAA) HTL.

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Nov 2017, accepted on 29 Nov 2017 and first published on 01 Dec 2017


Article type: Paper
DOI: 10.1039/C7TA09716F
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
  •   Request permissions

    Molecular Design with Silicon Core: Toward Commercially Available Hole Transport Materials for High-Performance Planar p-i-n Perovskite Solar Cells

    R. Xue, M. Zhang, G. Xu, J. Zhang, W. Chen, H. Chen, M. Yang, C. Cui, Y. Li and Y. Li, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA09716F

Search articles by author

Spotlight

Advertisements