The Crystalline Behavior and Device Function of Nonfullerene Acceptors in Organic Solar Cells

被引：36

作者：

Xu, Jinqiu ^{[1
,2
]}

Lin, Francis ^{[3
,4
,5
]}

Zhu, Lei ^{[1
,2
]}

Zhang, Ming ^{[1
,2
]}

Hao, Tianyu ^{[1
,2
]}

Zhou, Guanqing ^{[1
,2
]}

Gao, Ke ^{[3
,4
,6
]}

Zou, Yecheng ^{[7
,8
]}

Wei, Gang ^{[7
,8
]}

Yi, Yuanping ^{[9
]}

Jen, Alex K. Y. ^{[3
,4
,5
]}

Zhang, Yongming ^{[1
,2
]}

Liu, Feng ^{[1
,2
]}

机构：

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

[2] Shanghai Jiao Tong Univ, In Situ Ctr Phys Sci, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China

[3] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA

[4] Univ Washington, Dept Chem, Seattle, WA 98195 USA

[5] City Univ Hong Kong, Dept Chem, Kowloon, Hong Kong 999077, Peoples R China

[6] Shandong Univ, Sci Ctr Mat Creat & Energy Convers, Inst Frontier & Interdisciplinary Sci, Qingdao 266237, Peoples R China

[7] State Key Lab Fluorinated Funct Membrane Mat, Zibo 256401, Shandong, Peoples R China

[8] Dongyue Future Hydrogen Energy Mat Co, Zibo 256401, Shandong, Peoples R China

[9] Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China

来源：

ADVANCED ENERGY MATERIALS | 2022年 / 12卷 / 34期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

crystal structure; intermolecular interaction; morphology; nonfullerene acceptor; organic photovoltaics; SEMICONDUCTORS; PERFORMANCE; TRANSPORT; DESIGN; ACENES;

D O I：

10.1002/aenm.202201338

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The current research investigates the structure features and intermolecular interactions of nonfullerene acceptors (NFAs) in single crystal and thin films, as well as their solar cell applications. Guiding parameters and key intermolecular forces that lead to 2D brickwork or 3D web packing are identified. The atomic modification is shown as the key to induce hydrogen bonding or pi-pi stacking column, which results in different crystalline packing. The molecular assembly in thin film is initiated by hydrogen bonding, and completed by pi-pi stacking reorganization. The packing energy is seen as a guiding parameter that dictates the NFA crystalline morphology in blended thin films. The crystalline packing motif is not directly related with device efficiency. However, the crystalline morphology is the key parameter to influence exciton/carrier dynamics and device performance. A broader picture on the scaling behavior of organic semiconductor crystals ranging from oligoacenes to NFAs is established.

引用

页数：11

共 45 条

[1] Fluorination Effects on Indacenodithienothiophene Acceptor Packing and Electronic Structure, End-Group Redistribution, and Solar Cell Photovoltaic Response [J].