Constructing a donor–acceptor linear-conjugation structure for heterologous perylene diimides to greatly improve the photovoltaic performance

2019 ◽  
Vol 7 (4) ◽  
pp. 835-842 ◽  
Author(s):  
Helin Wang ◽  
Lingcheng Chen ◽  
Yi Xiao
Keyword(s):  
Solar Cells ◽  
Electron Acceptor ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Photovoltaic Performance ◽  
Linear Conjugation ◽  
Perylene Diimides ◽  
Donor Acceptor

Th-4PDI, a new donor–acceptor-type non-fullerene electron acceptor material, was designed and synthesized for high efficiency organic solar cells.

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.

One-Step Synthesis of New Electron Acceptor for High Efficiency Solution Processable Organic Solar Cells

2017 ◽  
Vol 121 (48) ◽  
pp. 26615-26621 ◽  
Author(s):  
P. Nagarjuna ◽  
Anirban Bagui ◽  
Ashish Garg ◽  
Vinay Gupta ◽  
Surya Prakash Singh
Keyword(s):  
Solar Cells ◽  
Electron Acceptor ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
One Step ◽  
Solution Processable

scholarly journals Recent advances in high-performance organic solar cells enabled by acceptor–donor–acceptor–donor–acceptor (A–DA′D–A) type acceptors

2020 ◽  
Vol 4 (12) ◽  
pp. 3487-3504 ◽  
Author(s):  
Jiajun Zhao ◽  
Chao Yao ◽  
Muhammad Umair Ali ◽  
Jingsheng Miao ◽  
Hong Meng
Keyword(s):  
Molecular Structure ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Photovoltaic Performance ◽  
Optoelectronic Properties ◽  
Recent Advances ◽  
Donor Acceptor

In this review, we focus on the recent advances in organic solar cells enabled by A–DA′D–A type acceptors and summarize the correlation between molecular structure, molecular packings, optoelectronic properties, and photovoltaic performance.

Donor–acceptor conjugated polymers based on thieno[3,2-b]indole (TI) and 2,1,3-benzothiadiazole (BT) for high efficiency polymer solar cells

2016 ◽  
Vol 4 (23) ◽  
pp. 5448-5460 ◽  
Author(s):  
Hongyan Huang ◽  
Meng Qiu ◽  
Quan Li ◽  
Shuli Liu ◽  
Xinzhen Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Electron Donor ◽  
High Efficiency ◽  
Polymer Solar Cells ◽  
Photovoltaic Performance ◽  
Donor Block ◽  
Donor Acceptor

Three conjugated polymers based on the thieno[3,2-b]indole (TI) unit as electron-donor block and benzothiadiazole (BT) as electron-accepting block and thiophene rings as spacers. Their photovoltaic performance were finely tuned by thiophene spacers.

Indolo[3,2-b]indole-Containing Donor–Acceptor Copolymers for High-Efficiency Organic Solar Cells

2017 ◽  
Vol 29 (5) ◽  
pp. 2135-2140 ◽  
Author(s):  
Jaeyoung Hwang ◽  
Jeonghun Park ◽  
Yu Jin Kim ◽  
Yeon Hee Ha ◽  
Chan Eon Park ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Donor Acceptor

scholarly journals Increasing donor-acceptor spacing for reduced voltage loss in organic solar cells

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jing Wang ◽  
Xudong Jiang ◽  
Hongbo Wu ◽  
Guitao Feng ◽  
Hanyu Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Radiative Decay ◽  
High Efficiency ◽  
Bulk Heterojunction ◽  
Perovskite Solar Cells ◽  
Research Direction ◽  
Voltage Loss ◽  
Donor Acceptor ◽  
New Research

AbstractThe high voltage losses ($${V}_{{loss}}$$ V l o s s ), originating from inevitable electron-phonon coupling in organic materials, limit the power conversion efficiency of organic solar cells to lower values than that of inorganic or perovskite solar cells. In this work, we demonstrate that this $${V}_{{loss}}$$ V l o s s can in fact be suppressed by controlling the spacing between the donor (D) and the acceptor (A) materials (DA spacing). We show that in typical organic solar cells, the DA spacing is generally too small, being the origin of the too-fast non-radiative decay of charge carriers ($${k}_{{nr}}$$ k n r ), and it can be increased by engineering the non-conjugated groups, i.e., alkyl chain spacers in single component DA systems and side chains in high-efficiency bulk-heterojunction systems. Increasing DA spacing allows us to realize significantly reduced $${k}_{{nr}}$$ k n r and improved device voltage. This points out a new research direction for breaking the performance bottleneck of organic solar cells.

Towards high-efficiency non-fullerene organic solar cells: Matching small molecule/polymer donor/acceptor

2014 ◽  
Vol 15 (10) ◽  
pp. 2270-2276 ◽  
Author(s):  
Pei Cheng ◽  
Xingang Zhao ◽  
Weiyi Zhou ◽  
Jianhui Hou ◽  
Yongfang Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Donor Acceptor

A pentacyclic S,N-heteroacene based electron acceptor with strong near-infrared absorption for efficient organic solar cells

2019 ◽  
Vol 55 (49) ◽  
pp. 7057-7060 ◽  
Author(s):  
Xiaohan Chen ◽  
Hao Liu ◽  
Lixing Xia ◽  
Tasawar Hayat ◽  
Ahmed Alsaedi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Electron Acceptor ◽  
Infrared Absorption ◽  
Organic Solar Cells ◽  
Near Infrared ◽  
Fused Ring ◽  
Donor Acceptor

A novel non-fullerene acceptor–donor–acceptor (A–D–A) structured small molecule acceptor material with fused ring N-alkyl DTP as the central donor unit and EG-2F as the terminal acceptor unit, named DTP-C17-4F, was designed and synthesized.

scholarly journals Branched Electron-Donor Core Effect in D-π-A Star-Shaped Small Molecules on Their Properties and Performance in Single-Component and Bulk-Heterojunction Organic Solar Cells

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3596
Author(s):  
Alexander N. Solodukhin ◽  
Yuriy N. Luponosov ◽  
Artur L. Mannanov ◽  
Petr S. Savchenko ◽  
Artem V. Bakirov ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Charge Carrier Mobility ◽  
Single Component ◽  
Orbital Energy ◽  
Donor Acceptor ◽  
And Performance ◽  
Acceptor Molecules

Star-shaped donor-acceptor molecules are full of promise for organic photovoltaics and electronics. However, the effect of the branching core on physicochemical properties, charge transport and photovoltaic performance of such donor-acceptor materials in single-component (SC) and bulk heterojunction (BHJ) organic solar cells has not been thoroughly addressed. This work shows the comprehensive investigation of six star-shaped donor-acceptor molecules with terminal hexyldicyanovinyl blocks linked through 2,2′-bithiophene π-conjugated bridge to different electron-donating cores such as the pristine and fused triphenylamine, tris(2-methoxyphenyl)amine, carbazole- and benzotriindole-based units. Variation of the branching core strongly impacts on such important properties as the solubility, highest occupied molecular orbital energy, optical absorption, phase behavior, molecular packing and also on the charge-carrier mobility. The performance of SC or BHJ organic solar cells are comprehensively studied and compared. The results obtained provide insight on how to predict and fine-tune photovoltaic performance as well as properties of donor-acceptor star-shaped molecules for organic solar cells.

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