What question did this study set out to answer?

The aim is to control H- and J-aggregation in small-molecule acceptors to improve performance in organic photovoltaics.

February 14, 2026Energy & Environmental Science2 citations

Strategic Engineering of H-/J-Aggregation Equilibrium in Non-Fullerene Acceptors Toward High-performance Organic Photovoltaics

HSHan SongChina University of Mining and Technology YYYuchen YueChinese Academy of Sciences XGXiaoman GuiBeihang University

Key Points

The aim is to control H- and J-aggregation in small-molecule acceptors to improve performance in organic photovoltaics.
Molecular engineering of asymmetric small-molecule acceptors.
Use of alkoxyphenyl/2-octyldodecyl side chains.
Evaluation of electron transport in organic solar cells.
Enhanced vertical electron transport was observed.
Controlled aggregation states lead to improved performance.

Abstract

Strategic molecular engineering of asymmetric small-molecule acceptors (SM-EH, SM-BO, SM-HD) featuring alkoxyphenyl/2-octyldodecyl inner side chains enables precise H-aggregation control, enhancing vertical electron transport in organic solar cells (OSCs). Incorporating these...

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