Cyano-functionalized small-molecule acceptors for high-efficiency wide-bandgap organic solar cells

2020 ◽  
Vol 8 (27) ◽  
pp. 9195-9200
Author(s):  
Jun Zhang ◽  
Jie Lv ◽  
Xiyue Dong ◽  
Tongle Xu ◽  
Xuexin Dai ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Wide Bandgap ◽  
High Demand

Wide-bandgap non-fullerene acceptors (NFAs) are in high demand for constructing efficient ternary or tandem organic solar cells (OSCs), yet the scarcity of them remains an important issue that needs exploration and perfection.

A novel wide-bandgap small molecule donor for high efficiency all-small-molecule organic solar cells with small non-radiative energy losses

2020 ◽  
Vol 13 (5) ◽  
pp. 1309-1317 ◽  
Author(s):  
Yulong Wang ◽  
Yang Wang ◽  
Lei Zhu ◽  
Haiqin Liu ◽  
Jin Fang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Loss ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Power Conversion ◽  
Wide Bandgap ◽  
Radiative Energy ◽  
Energy Losses ◽  
Radiative Energy Loss

A novel small molecule donor based on thiazolo[5,4-d]thiazole (TTz) unit is developed for OSCs application with 13.9% power conversion efficiency and a small non-radiative energy loss of 0.18 eV.

Simple-structured small molecule acceptors constructed by a weakly electron-deficient thiazolothiazole core for high-efficiency non-fullerene organic solar cells

2018 ◽  
Vol 6 (47) ◽  
pp. 24267-24276 ◽  
Author(s):  
Wenhong Peng ◽  
Guangjun Zhang ◽  
Lin Shao ◽  
Chao Ma ◽  
Bin Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Novel Strategy

A novel strategy is proposed to construct simple-structured SMAs using a weakly electron-deficient thiazolothiazole (TTz) core. The highest PCE of 8.77% is recorded for TTz1-based OSCs, which is the highest efficiency to date among non-fullerene OSCs with simple-structured SMAs.

High-efficiency organic solar cells based on a small-molecule donor and a low-bandgap polymer acceptor with strong absorption

2018 ◽  
Vol 6 (20) ◽  
pp. 9613-9622 ◽  
Author(s):  
Yankang Yang ◽  
Beibei Qiu ◽  
Shanshan Chen ◽  
Qiuju Zhou ◽  
Ying Peng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Strong Absorption ◽  
Low Bandgap ◽  
Polymer Acceptor

An OSC based on a small molecule DR3TBDTT as donor and n-type polymer PZ1 as acceptor was fabricated, and PCE of the device reached 5.86% which is the highest for the OSCs based small molecule donor/polymer acceptor.

High-efficiency all-small-molecule organic solar cells based on an organic molecule donor with an asymmetric thieno[2,3-f] benzofuran unit

2020 ◽  
Vol 63 (9) ◽  
pp. 1246-1255 ◽  
Author(s):  
Rui Sun ◽  
Yao Wu ◽  
Jing Guo ◽  
Zhenghui Luo ◽  
Chuluo Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Organic Molecule ◽  
High Efficiency

Constructing high efficiency non-fullerene all-small-molecule ternary organic solar cells by employing structurally similar acceptors

2021 ◽  
Author(s):  
Ziyun Huang ◽  
Ruimin Zhou ◽  
Min Lv ◽  
Hao Zhang ◽  
Chen Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Efficiency

Constructing high efficiency non-fullerene all-small-molecule ternary organic solar cells by employing structurally similar acceptors.

Concurrent improvement in JSC and VOC in high-efficiency ternary organic solar cells enabled by a red-absorbing small-molecule acceptor with a high LUMO level

2020 ◽  
Vol 13 (7) ◽  
pp. 2115-2123 ◽  
Author(s):  
Tao Liu ◽  
Ruijie Ma ◽  
Zhenghui Luo ◽  
Yuan Guo ◽  
Guangye Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Lumo Level

The ternary device achieved an excellent PCE of 15.02% with enhancement in both VOC and JSC by adding a red-absorbing SMA with a high LUMO level.

scholarly journals All-small-molecule organic solar cells with over 14% efficiency by optimizing hierarchical morphologies

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Ruimin Zhou ◽  
Zhaoyan Jiang ◽  
Chen Yang ◽  
Jianwei Yu ◽  
Jirui Feng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance ◽  
High Efficiency ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Photovoltaic System ◽  
Active Layers ◽  
Donor Acceptor

AbstractThe high efficiency all-small-molecule organic solar cells (OSCs) normally require optimized morphology in their bulk heterojunction active layers. Herein, a small-molecule donor is designed and synthesized, and single-crystal structural analyses reveal its explicit molecular planarity and compact intermolecular packing. A promising narrow bandgap small-molecule with absorption edge of more than 930 nm along with our home-designed small molecule is selected as electron acceptors. To the best of our knowledge, the binary all-small-molecule OSCs achieve the highest efficiency of 14.34% by optimizing their hierarchical morphologies, in which the donor or acceptor rich domains with size up to ca. 70 nm, and the donor crystals of tens of nanometers, together with the donor-acceptor blending, are proved coexisting in the hierarchical large domain. All-small-molecule photovoltaic system shows its promising for high performance OSCs, and our study is likely to lead to insights in relations between bulk heterojunction structure and photovoltaic performance.

Molecular electron acceptors for efficient fullerene-free organic solar cells

2017 ◽  
Vol 19 (5) ◽  
pp. 3440-3458 ◽  
Author(s):  
Shuixing Li ◽  
Zhongqiang Zhang ◽  
Minmin Shi ◽  
Chang-Zhi Li ◽  
Hongzheng Chen
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Wide Bandgap ◽  
Electron Acceptors ◽  
Electron Donors ◽  
Molecular Electron ◽  
Narrow Bandgap

Small molecule electron acceptors pairing with wide bandgap or narrow bandgap electron donors are reviewed and discussed for fullerene-free organic solar cells.

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