Energy-Level Modulation of Small-Molecule Electron Acceptors to Achieve over 12% Efficiency in Polymer Solar Cells

2016 ◽  
Vol 28 (42) ◽  
pp. 9423-9429 ◽  
Author(s):  
Sunsun Li ◽  
Long Ye ◽  
Wenchao Zhao ◽  
Shaoqing Zhang ◽  
Subhrangsu Mukherjee ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Small Molecule ◽  
Polymer Solar Cells ◽  
Electron Acceptors

Subtle side-chain tuning on terminal groups of small molecule electron acceptors for efficient fullerene-free polymer solar cells

2017 ◽  
Vol 5 (29) ◽  
pp. 15175-15182 ◽  
Author(s):  
Jie Zhu ◽  
Sunsun Li ◽  
Xiaoyu Liu ◽  
Huifeng Yao ◽  
Fenghao Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Polymer Solar Cells ◽  
Photovoltaic Performance ◽  
Electron Acceptors ◽  
Side Chain ◽  
End Groups

The influence of alkoxyl end-groups on the photovoltaic performance of small molecular acceptors was studied.

Fused pentacyclic electron acceptors with four cis-arranged alkyl side chains for efficient polymer solar cells

2018 ◽  
Vol 6 (8) ◽  
pp. 3724-3729 ◽  
Author(s):  
Ran Hou ◽  
Miao Li ◽  
Shiyu Feng ◽  
Yahui Liu ◽  
Liangliang Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Polymer Solar Cells ◽  
Electron Acceptors ◽  
Side Chains ◽  
Alkyl Side Chains

A fused pentacyclic small molecule acceptor with cis-arranged alkyl side chains was firstly synthesized and applied in polymer solar cells.

An alcohol-soluble small molecule as efficient cathode interfacial layer materials for polymer solar cells

2021 ◽  
Vol 113 ◽  
pp. 110909 ◽  
Author(s):  
Can Chen ◽  
Chunlin Zhang ◽  
Yichun Peng ◽  
Ningning Wang ◽  
Xingpeng Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Interfacial Layer ◽  
Polymer Solar Cells

scholarly journals The Effects of Molecular Packing Behavior of Small-Molecule Acceptors in Ternary Organic Solar Cells

2021 ◽  
Vol 11 (2) ◽  
pp. 755
Author(s):  
Eunhee Lim
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Ternary System ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Orbital Energy ◽  
Working Mechanism ◽  
Energy Level Structure ◽  
The Third ◽  
Molecular Backbone

Herein, two diketopyrrolopyrrole (DPP)-based, small-molecule isomers, o- and p-DPP-PhCN, were introduced as acceptors in ternary organic solar cells (OSCs). The isomers have the same molecular backbone but differ in the positions of the cyanide (CN) substituents (ortho and para), which greatly affects their packing behavior. Ternary solar cells composed of poly(3-hexylthiophene) (P3HT):DPP-PhCN:phenyl-C61-butyric acid methyl ester (PCBM) were fabricated, and the effects of the different packing behaviors of the third component on the device performance and the working mechanism of the ternary cells were investigated. The addition of o-DPP-PhCN with a relatively high-lying lowest unoccupied molecular orbital energy level resulted in an increase in the open-circuit voltage (VOC) in the ternary devices, demonstrating the alloy-like structure of the two acceptors (o-DPP-PhCN and PCBM) in the ternary system. However, the p-DPP-PhCN-based ternary cells exhibited VOC values similar to that of a P3HT:PCBM binary cell, irrespective of the addition of p-DPP-PhCN, indicating a cascade energy-level structure in the ternary system and an effective charge transfer from the P3HT to the PCBM. Importantly, by increasing the addition of p-DPP-PhCN, the short-circuit current density increased substantially, resulting in pronounced shoulder peaks in the external quantum efficiency responses in the long-wavelength region, corresponding to the contribution of the photocurrent generated by the light absorption of p-DPP-PhCN. Despite sharing the same molecular backbone, the two DPP-PhCNs exhibited substantially different packing behaviors according to the position of their CN substituents, which also greatly affected the working mechanism of the ternary devices fabricated using the DPP-PhCNs as the third component.

scholarly journals 9.0% power conversion efficiency from ternary all-polymer solar cells

2017 ◽  
Vol 10 (10) ◽  
pp. 2212-2221 ◽  
Author(s):  
Zhaojun Li ◽  
Xiaofeng Xu ◽  
Wei Zhang ◽  
Xiangyi Meng ◽  
Zewdneh Genene ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Energy Level Alignment ◽  
Proper Energy

High-performance ternary all-polymer solar cells with outstanding efficiency of 9.0% are realized by incorporating two donor and one acceptor polymers with complementary absorption and proper energy level alignment.

scholarly journals Correction to “Indacenodifuran-Based Non-Fullerene Electron Acceptors for Efficient Polymer Solar Cells”

2021 ◽  
Author(s):  
Enfang He ◽  
Xiaojing Wang ◽  
Yi Lu ◽  
Yuli Yin ◽  
Fengyun Guo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Polymer Solar Cells ◽  
Electron Acceptors

A minimal benzo[c][1,2,5]thiadiazole-based electron acceptor as a third component material for ternary polymer solar cells with efficiencies exceeding 16.0%

2020 ◽  
Vol 7 (1) ◽  
pp. 117-124 ◽  
Author(s):  
Yunlong Ma ◽  
Xiaobo Zhou ◽  
Dongdong Cai ◽  
Qisheng Tu ◽  
Wei Ma ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Electron Acceptor ◽  
Polymer Solar Cells ◽  
Binary Blends ◽  
Component Material ◽  
Ternary Polymer

A simple small molecule of BTF is used as a third component in the binary blends of J71:ITIC and PM6:Y6 to achieve efficient ternary polymer solar cells with enhanced PCEs of 12.35% and 16.53%, respectively.

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