A Broad-Spectrum Solid Additive to Further Boost High-Efficiency Organic Solar Cells via Morphology Regulation

被引：48

作者：

Cao, Xiangjian ^{[1
,2
,3
]}

Guo, Jiaxin ^{[1
,2
,3
]}

Li, Zhixiang ^{[1
,2
,3
]}

Bi, Xingqi ^{[1
,2
,3
]}

Liang, Huazhe ^{[1
,2
,3
]}

Xiao, Zheng ^{[1
,2
,3
]}

Guo, Yaxiao ^{[4
]}

Jia, Xinyuan ^{[1
,2
,3
]}

Xu, Zheng ^{[1
,2
,3
]}

Ma, Kangqiao ^{[1
,2
,3
]}

Yao, Zhaoyang ^{[1
,2
,3
]}

Kan, Bin ^{[5
]}

Wan, Xiangjian ^{[1
,2
,3
]}

Li, Chenxi ^{[1
,2
,3
]}

Chen, Yongsheng ^{[1
,2
,3
]}

机构：

[1] Nankai Univ, Coll Chem, Renewable Energy Convers & Storage Ctr RECAST, Ctr Nanoscale Sci & Technol,State Key Lab, Tianjin 300071, Peoples R China

[2] Nankai Univ, Inst Elemento Organ Chem, Coll Chem, Renewable Energy Convers & Storage Ctr RECAST, Tianjin 300071, Peoples R China

[3] Nankai Univ, Coll Chem, Renewable Energy Convers & Storage Ctr RECAST, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China

[4] Tiangong Univ, Sch Chem, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China

[5] Nankai Univ, Natl Inst Adv Mat, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China

来源：

ACS ENERGY LETTERS | 2023年 / 8卷 / 08期

关键词：

MOLECULAR DESIGN; POLYMER; PERFORMANCE; ENABLES; BENZODITHIOPHENE; SEMICONDUCTORS;

D O I：

10.1021/acsenergylett.3c01178

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：

Given the great potential for achieving record breakingorganicsolar cells (OSCs), newly explored solid additives that could optimizenanoscale morphology of active layers have rapidly gained widespreadattention. Herein, a new volatile solid additive 2,5-dichlorothieno[3,2-b]thiophene (TT-Cl) is delicately explored, fully satisfyingthe design criteria of a planar conjugated skeleton with suitablemolecular size, symmetrical geometry, and proper halogenation. Whenapplied in the state-of-the-art OSCs with diverse active layers, thequite high crystallinity of TT-Cl and strong interactions with light-harvestingcomponents lead to optimized molecular crystalline ordering, fibrillarnetworks, and vertical phase distributions, thus offering a significantperformance enhancement. Consequently, PM6:Y6-based binary and ternaryOSCs achieved PCEs of 18.20% and 18.95%, respectively. Moreover, PM6:CH23-basedbinary OSCs presented an outstanding PCE of 18.72%. Our work not onlyprovides a broad-spectrum solid additive to optimize film morphologiespowerfully but also manifests great potential for achieving a record-breakingPCE of OSCs.

引用

页码：3494 / 3503

页数：10

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