Built‐In Potential and Operational Stability of Nonfullerene Organic Solar Cells. Issue 12 (8th June 2020)

• Record Type: Journal Article
• Authors: Han, Jiayin; Wang, Yiwen; Zhu, Furong
• Other Names: Colsmann Alexander guestEditor.; Röhm Holger guestEditor.
• Is Part Of: Energy technology. Volume 8:Issue 12(2020:Dec.)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-06-08
• Subjects: built-in potential -- interfacial engineering -- morphology -- nonfullerene organic solar cells -- stability; Energy development -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1002/ente.202000245
• Languages: English
• ISSNs: 2194-4288

Abstract

Abstract : 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. Abstract : In parallel to progresses made in photoactive materials for high‐performance organic solar cells (OSCs), a substantial improvement in cell stability is required if organic photovoltaic is to become a viable option for commercialization. This work discusses enhancing the stability of OSCs through analyses of 1) charge mobility, 2) vertical stratification, and 3) built‐in potential across the blend layer.