Multifunctional Molecular Design of a New Fulleropyrrolidine Electron Transport Material Family Engenders High Performance of Perovskite Solar Cells

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

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Author(s)

  • Zhou Xing
  • Fu Liu
  • Shu-Hui Li
  • Zuo-Chang Chen
  • Ming-Wei An
  • Shizhao Zheng
  • Shihe Yang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number2107695
Journal / PublicationAdvanced Functional Materials
Volume31
Issue number51
Online published18 Sep 2021
Publication statusPublished - 16 Dec 2021

Abstract

[6,6]-phenyl-C61-butyric acid methyl ester remains indispensable as the electron transport material (ETM) for perovskite solar cells (PSCs), but its synthesis involves complicated multisteps with low productivity. In contrast, the potential of synthesizing simpler fulleropyrrolidine derivatives has long been overlooked, and little has been understood regarding their structure-dependent effects on photovoltaic (PV) performance. Herein, seven novel fulleropyrrolidine derivatives (F1–F7) are deliberately designed, synthesized, and comprehensively characterized in both solution and thin-film states and subsequently investigated as ETMs for PSCs. Notably, the F4 delivers the highest power conversion efficiencies over 20% of devices, which surpass all reported fulleropyrrolidine ETMs due to its optimal photoelectric property. Moreover, the structure-dependent effects of the fullerenes on PV parameters are uncovered, including solubility, intermolecular interaction, packing structure, and charge-transfer ability, which can guide the future design of high-performance and stable fullerene ETMs for PSCs.

Research Area(s)

  • electron transport materials, fullerenes, intermolecular interactions, packing structures, perovskite solar cells

Citation Format(s)

Multifunctional Molecular Design of a New Fulleropyrrolidine Electron Transport Material Family Engenders High Performance of Perovskite Solar Cells. / Xing, Zhou; Liu, Fu; Li, Shu-Hui; Chen, Zuo-Chang; An, Ming-Wei; Zheng, Shizhao; Jen, Alex K.-Y.; Yang, Shihe.

In: Advanced Functional Materials, Vol. 31, No. 51, 2107695, 16.12.2021.

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