Anti-solvent assisted treatment for improved morphology and efficiency of lead acetate derived perovskite solar cells

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Mengqin Kong
  • Hang Hu
  • Binghai Dong
  • Li Wan
  • Shimin Wang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)1325-1328
Journal / PublicationChinese Chemical Letters
Volume30
Issue number6
Online published5 Mar 2019
Publication statusPublished - Jun 2019

Abstract

An efficient solution-processable route employing Pb(Ac)2 as lead source and anti-solvent treatment to achieve fully covered and homogenous perovskite films is reported. The effect of different solution methods and device architectures on the morphologies of perovskite films were systematically investigated. Our results show that the planar perovskite layer fabricated by one-step solution method achieved fully covered and pinhole-free films. Further anti-solvent treatment using chlorobenzene (CB) promoted a perovskite film with highly smooth surfaces and enlarged grain sizes. Device fabricated from CB treated perovskite film achieved a best PCE of 15.80%, in comparison with 14.02% for the untreated device. These results evidently suggest a feasible route towards controlling the crystallization and morphology of planar heterojunction (PHJ) PSCs for improved efficiency.

Research Area(s)

  • Anti-solvent process, Chlorobenzene, Enlarged grain sizes, Improved morphology, Lead acetate derived perovskite

Citation Format(s)