journal article·2026-01

Achieving 20.80% Efficiency in Ternary Organic Solar Cells via Suppression of Static and Dynamic Disorder

Jiali Song, Guangkuo Dai, Huotian Zhang, Jingyi Kong, Liming Liu, Yun Li, Mingxu Zhou, Runzheng Gu, Dongcheng Jiang, Xuelin Wang, Xunchang Wang, Sha Liu, Jun Yan, Hang Yin, Zheng Tang, Xiaotao Hao, Renqiang Yang, Feng Gao, Yanming Sun

Advanced Materials· Volume 38· Issue 5
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Abstract

Abstract Suppressing energetic disorder represents a critical pathway toward high‐efficiency organic solar cells (OSCs). Herein, a ternary system is successfully developed to regulate the energetic disorder and enhance the photovoltaic performance of OSCs through strategic incorporation of a dimeric acceptor NVN into D18:L8‐BO host. It is demonstrated that NVN incorporation simultaneously suppresses both static and dynamic disorder. Crucially, NVN‐mediated suppression of dynamic disorder achieved through suppressing structural relaxation is identified as the dominant factor enhancing photoluminescence quantum yield (PLQY) and minimizing non‐radiative energy loss. Furthermore, NVN optimizes the double‐fibril network morphology (DFNM), induces graded vertical phase separation, and enhances molecular packing order. These morphological improvements reinforce structural regularity and mitigate static disorder. As a result, suppressed trap states, retrained energy loss, facilitated exciton dissociation, and improved charge transport are achieved in the ternary system. Owing to these synergistic effects, the D18:L8‐BO:NVN ternary OSC achieves a remarkable power conversion efficiency (PCE) of 20.80% (certified 20.39%) with enhanced operational photostability. Overall, this work underscores the fundamental importance of energetic disorder control in achieving high‐performance OSCs.
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Research context

OpenAlex topics: Organic Electronics and Photovoltaics · Perovskite Materials and Applications · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

International Innovation Institute Beihang University Hangzhou 311115 P. R. China

School of Chemistry Beihang University Beijing 100191 P. R. China

Department of Physics, Chemistry, and Biology Linköping University Linköping 58183 Sweden

Guangdong Basic Research Center of Excellence for Aggregate Science, School of Science and Engineering The Chinese University of Hong Kong Shenzhen 518172 P. R. China

School of Physics State Key Laboratory of Crystal Materials Shandong University Jinan 250100 P. R. China

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low‐dimension Materials, College of Materials Science and Engineering Donghua University Shanghai 201620 P. R. China

Key Laboratory of Optoelectronic Chemical Materials and Devices (Ministry of Education), School of Optoelectronic Materials & Technology Jianghan University Wuhan 430056 P. R. China

Dongguan Key Laboratory of Interdisciplinary Science for Advanced Materials and Large‐Scale Scientific Facilities, School of Physical Sciences Great Bay University Dongguan 523808 P. R. China

Funding

Natural Science Foundation of Beijing Municipality · National Natural Science Foundation of China

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