Hybrid perovskite quantum dot/non-fullerene molecule solar cells with efficiency over 15%

Jiabei Yuan, Xuliang Zhang, Jianguo Sun, Robert Patterson, Huifeng Yao, Dayuan Xue, Yao Wang, Kang Ji, Long Hu, Shujuan Huang, Dewei Chu, Tom Wu, Jianhui Hou, Jianyu Yuan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Organic-inorganic hybrid film using conjugated materials and quantum dots (QDs) are of great interest for solution-processed optoelectronic devices, including photovoltaics (PVs). However, it is still challenging to fabricate conductive hybrid films to maximize their PV performance. Herein, for the first time, superior PV performance of hybrid solar cells consisting of CsPbI3 perovskite QDs and Y6 series non-fullerene molecules is demonstrated and further highlights their importance on hybrid device design. In specific, a hybrid active layer is developed using CsPbI3 QDs and non-fullerene molecules, enabling a type-II energy alignment for efficient charge transfer and extraction. Additionally, the non-fullerene molecules can well passivate the QDs, reducing surface defects and energetic disorder. The champion CsPbI3 QD/Y6-F hybrid device has a record-high efficiency of 15.05% for QD/organic hybrid PV devices, paving a new way to construct solution-processable hybrid film for efficient optoelectronic devices.

Original languageEnglish
Article number2101272
Pages (from-to)1-9
Number of pages9
JournalAdvanced Functional Materials
Volume31
Issue number27
DOIs
Publication statusPublished - 2 Jul 2021

Keywords

  • CsPbI
  • non-fullerene molecules
  • organic-inorganic hybrid solar cells
  • perovskite quantum dots

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