Built-In Potential and Operational Stability of Nonfullerene Organic Solar Cells

Jiayin Han, Yiwen Wang, Fu Rong Zhu*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

8 Citations (Scopus)


Many progresses have been made in the advancement of solution-processable high-performance organic solar cells (OSCs), offering an encouraging alternative photovoltaic (PV) technology option to traditional solar cells. The solution processing capability provides OSCs with great fabrication flexibility for new device concepts, cell architectures, and applications including lightweight large-area transparent and flexible PV modules. The unique transparency and flexible features also add an attractive artistic aspect to emerging OSCs for use on curved surfaces, portable electronics, and indoor appliances. However, the stability of the OSCs is still less than satisfactory compared with the conventional inorganic semiconductor solar cells. This work discusses the improvement of the operational stability of OSCs through analyses of the important issues of 1) unbalanced charge mobility, 2) vertical stratification in the bulk heterojunction, and 3) built-in potential across the photoactive layer, and retaining a stable built-in potential for enhancing the operational stability of OSCs.

Original languageEnglish
Article number2000245
JournalEnergy Technology
Issue number12
Early online date3 Jun 2020
Publication statusPublished - Dec 2020

Scopus Subject Areas

  • Energy(all)

User-Defined Keywords

  • built-in potential
  • interfacial engineering
  • morphology
  • nonfullerene organic solar cells
  • stability


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