Molecular Engineered Hole-Extraction Materials to Enable Dopant-Free, Efficient p-i-n Perovskite Solar Cells

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Huanle Chen
  • Weifei Fu
  • Chuyi Huang
  • Zhongqiang Zhang
  • Shuixing Li
  • Feizhi Ding
  • Minmin Shi
  • Chang-Zhi Li
  • Hongzheng Chen

Detail(s)

Original languageEnglish
Article number1700012
Journal / PublicationAdvanced Energy Materials
Volume7
Issue number18
Early online date12 May 2017
Publication statusPublished - 20 Sep 2017

Abstract

Two hole-extraction materials (HEMs), TPP-OMeTAD and TPP-SMeTAD, have been developed to facilitate the fabrication of efficient p-i-n perovskite solar cells (PVSCs). By replacing the oxygen atom on HEM with sulfur (from TPP-OMeTAD to TPP-SMeTAD), it effectively lowers the highest occupied molecular orbital of the molecule and provides stronger Pb—S interaction with perovskites, leading to efficient charge extraction and surface traps passivation. The TPP-SMeTAD-based PVSCs exhibit both improved photovoltaic performance and reduced hysteresis in p-i-n PVSCs over those based on TPP-OMeTAD. This work not only provides new insights on creating perovskite-HEM heterojunction but also helps in designing new HEM to enable efficient organic–inorganic hybrid PVSCs.

Research Area(s)

  • hole-extraction materials, molecular engineering, perovskite solar cells, sulfur atoms

Citation Format(s)

Molecular Engineered Hole-Extraction Materials to Enable Dopant-Free, Efficient p-i-n Perovskite Solar Cells. / Chen, Huanle; Fu, Weifei; Huang, Chuyi; Zhang, Zhongqiang; Li, Shuixing; Ding, Feizhi; Shi, Minmin; Li, Chang-Zhi; Jen, Alex K.-Y.; Chen, Hongzheng.

In: Advanced Energy Materials, Vol. 7, No. 18, 1700012, 20.09.2017.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review