Precisely Regulating Intermolecular Interactions and Molecular Packing of Nonfused-Ring Electron Acceptors via Halogen Transposition for High-Performance Organic Solar Cells

被引：12

作者：

Gu, Xiaobin ^{[1
,2
]}

Zeng, Rui ^{[3
,4
]}

Hou, Yuqi ^{[1
,2
]}

Yu, Na ^{[5
]}

Qiao, Jiawei ^{[6
]}

Li, Hongxiang ^{[7
]}

Wei, Yanan ^{[1
,2
]}

He, Tengfei ^{[8
]}

Zhu, Jinge ^{[3
,4
]}

Deng, Jiawei ^{[3
,4
]}

Tan, Senke ^{[3
,4
]}

Zhang, Cai'e ^{[1
,2
]}

Cai, Yunhao ^{[1
,2
]}

Long, Guankui ^{[8
]}

Hao, Xiaotao ^{[6
]}

Tang, Zheng ^{[5
]}

Liu, Feng ^{[3
,4
]}

Zhang, Xin ^{[1
,2
]}

Huang, Hui ^{[1
,2
]}

机构：

[1] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Ctr Mat Sci & Optoelect Engn, CAS Ctr Excellence Topol Quantum Computat, Beijing 101408, Peoples R China

[2] Univ Chinese Acad Sci, CAS Key Lab Vacuum Phys, Beijing 101408, Peoples R China

[3] Shanghai Jiao Tong Univ, Frontiers Sci Ctr Transformat Mol, Sch Chem & Chem Engn, Situ Ctr Phys Sci, Shanghai 200240, Peoples R China

[4] Shanghai Jiao Tong Univ, Ctr Hydrogen Sci, Shanghai 200240, Peoples R China

[5] Donghua Univ, Coll Mat Sci & Engn, Ctr Adv Low Dimens Mat, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China

[6] Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

[7] Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610106, Peoples R China

[8] Nankai Univ, Natl Inst Adv Mat, Renewable Energy Convers & Storage Ctr RECAST, Sch Mat Sci & Engn, Tianjin 300071, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2024年 / 63卷 / 34期

基金：

国家重点研发计划;

关键词：

organic solar cells; nonfused-ring electron acceptors; intermolecular interactions; molecular packing; halogenation; CONFORMATIONAL LOCKS; EFFICIENT;

D O I：

10.1002/anie.202407355

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The structure of molecular aggregates is crucial for charge transport and photovoltaic performance in organic solar cells (OSCs). Herein, the intermolecular interactions and aggregated structures of nonfused-ring electron acceptors (NFREAs) are precisely regulated through a halogen transposition strategy, resulting in a noteworthy transformation from a 2D-layered structure to a 3D-interconnected packing network. Based on the 3D electron transport pathway, the binary and ternary devices deliver outstanding power conversion efficiencies (PCEs) of 17.46 % and 18.24 %, respectively, marking the highest value for NFREA-based OSCs. Herein, we propose a novel halogen transposition strategy aimed at precisely regulate the intermolecular interactions and aggregated structures of nonfused-ring electron acceptors (NFREAs). Hence, the NFREA 3TTB-ClF, featuring a 3D-interconnected packing network, achieves outstanding power conversion efficiencies of 17.46 % and 18.24 % in binary and ternary organic photovoltaic devices, respectively, marking a new milestone in the field of NFREA-based organic solar cells. image

引用

页数：10

共 65 条

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