Developing high-performance small molecule organic solar cells via a large planar structure and an electron-withdrawing central unit

2017 ◽  
Vol 53 (2) ◽  
pp. 451-454 ◽  
Author(s):  
Hongtao Zhang ◽  
Yongtao Liu ◽  
Yanna Sun ◽  
Miaomiao Li ◽  
Bin Kan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Building Block ◽  
High Performance ◽  
Planar Structure ◽  
Central Unit ◽  
Donor Material

We designed and synthesized a new small molecule donor material named DR3TBDD using an electron-withdrawing unit BDD as the central building block. A PCE of 9.53% with a highVocof around 1 V was achieved.

An A2–π–A1–π–A2-type small molecule donor for high-performance organic solar cells

2019 ◽  
Vol 7 (18) ◽  
pp. 5381-5384 ◽  
Author(s):  
Qian Zhang ◽  
Yanna Sun ◽  
Xianjie Chen ◽  
Zhijing Lin ◽  
Xin Ke ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance ◽  
Photovoltaic Performance ◽  
Central Unit ◽  
Strong Electron

A new A2–π–A1–π–A2-type small-molecule donor using a strong electron-withdrawing unit as the central unit was synthesized and its photovoltaic performance was investigated.

Fullerene/Non-fullerene Alloy for High-Performance All-Small-Molecule Organic Solar Cells

2021 ◽  
Vol 13 (5) ◽  
pp. 6461-6469
Author(s):  
María Privado ◽  
Fernando G. Guijarro ◽  
Pilar de la Cruz ◽  
Rahul Singhal ◽  
Fernando Langa ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance

Effects of lateral-chain thiophene fluorination on morphology and charge transport of BDT-T based small molecule donors: A study with multiscale simulations

2021 ◽  
Author(s):  
Chunlin Xu ◽  
Chuang Yao ◽  
Shaohui Zheng
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Building Block ◽  
Multiscale Simulations

Thiophene substituted benzo[1,2-b:4,5-b′]dithiophene (BDT-T) is widely used as the building block of promising donor materials in organic solar cells (OSCs). Fluorination on the lateral-chain thiophenes of BDT-T is a considerable...

Study on Photo-Degradation of Inverted Organic Solar Cells Caused by Generation of Potential Barrier between PEDOT:PSS and PBDB-Ts

2021 ◽  
Author(s):  
Masahiro Nakano ◽  
Akira Takahara ◽  
Md. Shahiduzzaman ◽  
Makoto Karakawa ◽  
Tetsuya Taima ◽  
...  
Keyword(s):  
Solar Cells ◽  
Potential Barrier ◽  
Organic Solar Cells ◽  
High Performance ◽  
State Of The Art ◽  
Photo Degradation ◽  
Donor Material ◽  
Photo Stability

We investigated that photo-stability of PBDB-T, which is a good donor material for state-of-the-art high-performance organic solar cells (OSCs), in OSCs under prolonged photo-irradiation. PBDB-T itself did not decompose upon...

High-performance organic solar cells based on a small molecule with thieno[3,2-b]thiophene as π-bridge

2018 ◽  
Vol 53 ◽  
pp. 273-279 ◽  
Author(s):  
Chennan Ye ◽  
Yan Wang ◽  
Zhaozhao Bi ◽  
Xia Guo ◽  
Qunping Fan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance

scholarly journals Donor Derivative Incorporation: An Effective Strategy toward High Performance All‐Small‐Molecule Ternary Organic Solar Cells

2019 ◽  
Vol 6 (21) ◽  
pp. 1901613 ◽  
Author(s):  
Hua Tang ◽  
Tongle Xu ◽  
Cenqi Yan ◽  
Jie Gao ◽  
Hang Yin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance ◽  
Effective Strategy

scholarly journals With PBDB-T as the Donor, the PCE of Non-Fullerene Organic Solar Cells Based on Small Molecule INTIC Increased by 52.4%

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1324 ◽  
Author(s):  
Weifang Zhang ◽  
Zicha Li ◽  
Suling Zhao ◽  
Zheng Xu ◽  
Bo Qiao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Short Circuit Current ◽  
Production Costs ◽  
Higher Carrier Mobility ◽  
Carrier Transportation

At present, most high-performance non-fullerene materials are centered on fused rings. With the increase in the number of fused rings, production costs and production difficulties increase. Compared with other non-fullerenes, small molecule INTIC has the advantages of easy synthesis and strong and wide infrared absorption. According to our previous report, the maximum power conversion efficiency (PCE) of an organic solar cell using PTB7-Th:INTIC as the active layer was 7.27%. In this work, other polymers, PTB7, PBDB-T and PBDB-T-2F, as the donor materials, with INTIC as the acceptor, are selected to fabricate cells with the same structure to optimize their photovoltaic performance. The experimental results show that the optimal PCE of PBDB-T:INTIC based organic solar cells is 11.08%, which, thanks to the open voltage (VOC) increases from 0.80 V to 0.84 V, the short circuit current (JSC) increases from 15.32 mA/cm2 to 19.42 mA/cm2 and the fill factor (FF) increases from 60.08% to 67.89%, then a 52.4% improvement in PCE is the result, compared with the devices based on PTB7-Th:INTIC. This is because the PBDB-T:INTIC system has better carrier dissociation and extraction, carrier transportation and higher carrier mobility.

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.

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