Efficient fullerene-free organic solar cells based on fused-ring oligomer molecules

2016 ◽  
Vol 4 (4) ◽  
pp. 1486-1494 ◽  
Author(s):  
Yuze Lin ◽  
Jiayu Wang ◽  
Tengfei Li ◽  
Yang Wu ◽  
Cheng Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
High Crystallinity ◽  
Donor And Acceptor ◽  
Fused Ring ◽  
Small Phase

Organic solar cells based on monodisperse fused-ring oligomer molecule donor and acceptor blends exhibit a power conversion efficiency of over 6%; high crystallinity and small phase separation coexist in the blends.

17% efficiency all-small-molecule organic solar cells enabled by nanoscale phase separation with a hierarchical branched structure

2021 ◽  
Author(s):  
Jinzhao Qin ◽  
Zhihao Chen ◽  
Pengqing Bi ◽  
Yang Yang ◽  
Jianqi Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Nanoscale Phase Separation ◽  
Branched Structure

By constructing a ternary cell with a B1:BO-2Cl:BO-4Cl donor:acceptors combination, an outstanding power conversion efficiency (PCE) of 17.0% (certified to be 16.9%) has been realized for all-small-molecule organic solar cells (ASM-OSCs).

Replacing Cyano (−C≡N) Group to Design Environmentally Friendly Fused-ring Electron Acceptors

2021 ◽  
Author(s):  
Chuang Yao ◽  
Yezi Yang ◽  
Lei Li ◽  
Maolin Bo ◽  
Cheng Peng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
High Performance ◽  
Cyano Group ◽  
Power Conversion ◽  
Electron Acceptors ◽  
Fused Ring ◽  
Electron Withdrawing Group

Cyano-group (−C≡N) is an electron-withdrawing group, which has been widely used to construct high-performance fused-ring electron acceptors (FREAs). Benefiting from these FREAs, the power conversion efficiency of organic solar cells...

Efficient, Thermally Stable Poly(3-Hexylthiophene)-Based Organic Solar Cells Achieved by Non-Covalently Fused-Ring Small Molecule Acceptors

2022 ◽  
Author(s):  
Daehee Han ◽  
Yunghee Han ◽  
Youngkwon Kim ◽  
Jin-Woo Lee ◽  
Dahyun Jeong ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Significant Enhancement ◽  
Thermally Stable ◽  
Fused Ring

Organic solar cells (OSCs) based on poly(3-hexylthiophene) (P3HT) have achieved a significant enhancement of the power conversion efficiency (PCE), mainly driven by the development of non-fullerene small-molecule acceptors. However, their...

scholarly journals Efficient non-fullerene organic solar cells employing sequentially deposited donor–acceptor layers

2018 ◽  
Vol 6 (37) ◽  
pp. 18225-18233 ◽  
Author(s):  
Jiangbin Zhang ◽  
Bin Kan ◽  
Andrew J. Pearson ◽  
Andrew J. Parnell ◽  
Joshaniel F. K. Cooper ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Fabrication Method ◽  
Donor And Acceptor ◽  
Donor Acceptor

A new fabrication method via sequentially depositing donor and acceptor layers can push the power conversion efficiency of organic solar cells based on non-fullerene acceptors to over 10%.

Influence of additives in bulk heterojunction solar cells using magnesium tetraethynylporphyrin with triisopropylsilyl and anthryl substituents

2014 ◽  
Vol 18 (08n09) ◽  
pp. 735-740 ◽  
Author(s):  
Takafumi Nakagawa ◽  
Junichi Hatano ◽  
Yutaka Matsuo
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Electron Donor ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Acid Methyl Ester ◽  
Heterojunction Solar Cells ◽  
Donor And Acceptor

We designed and synthesized anthryl-disubstituted magnesium tetraethynylporphyrin([{5,15-bis(anthracen-9′-yl)ethynyl}-10,20-bis{(triisopropylsilyl)ethynyl}porphyrinato] magnesium(II)), and applied it as an electron donor to solution-processed bulk heterojunction small molecule organic solar cells. The compound was characterized by single crystal X-ray crystallography as well as UV-vis light absorption spectrum showing the absorption maximum and onset at 700 and 740 nm, respectively. Organic solar cells using this compound and [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) as electron donor and acceptor, respectively, showed power conversion efficiency of 1.31% at the donor and acceptor ratio of 1:3. The use of pyridine as a coordinating additive increased power conversion efficiency to 1.61%, which was the best among tested additives, THF, pyradine, dioxane, and 1,8-diiodooctane.

Enhanced power-conversion efficiency in organic solar cells incorporating copolymeric phase-separation modulators

2018 ◽  
Vol 6 (9) ◽  
pp. 3884-3894 ◽  
Author(s):  
C. Sartorio ◽  
V. Campisciano ◽  
C. Chiappara ◽  
S. Cataldo ◽  
M. Scopelliti ◽  
...  
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Device Efficiency ◽  
Donor Acceptor ◽  
Plastic Solar Cells

Fullerene–oligothiophene copolymers acting as donor/acceptor segregation modulators improve the device efficiency, giving the highest values for P3HT:PCBM plastic solar cells.

Tuning the central fused ring and terminal units to improve the photovoltaic performance of Ar(A–D)2 type small molecules in solution-processed organic solar cells

2016 ◽  
Vol 4 (13) ◽  
pp. 4952-4961 ◽  
Author(s):  
Jianhua Chen ◽  
Linrui Duan ◽  
Manjun Xiao ◽  
Qiong Wang ◽  
Bin Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Solution Processed ◽  
Fused Ring ◽  
Terminal Units

A series of Ar(A–D)2 type small molecules containing a pyrene core were synthesized. A significantly improved power conversion efficiency of 5.88% was obtained for ThDPP2Py based organic solar cells.

The Effect of Donor Molecular Structure on Power Conversion Efficiency of Small-Molecule-Based Organic Solar Cells

2019 ◽  
Vol 16 (3) ◽  
pp. 236-243 ◽  
Author(s):  
Hui Zhang ◽  
Yibing Ma ◽  
Youyi Sun ◽  
Jialei Liu ◽  
Yaqing Liu ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Molecular Design ◽  
Power Conversion ◽  
The Relationship

In this review, small-molecule donors for application in organic solar cells reported in the last three years are highlighted. Especially, the effect of donor molecular structure on power conversion efficiency of organic solar cells is reported in detail. Furthermore, the mechanism is proposed and discussed for explaining the relationship between structure and power conversion efficiency. These results and discussions draw some rules for rational donor molecular design, which is very important for further improving the power conversion efficiency of organic solar cells based on the small-molecule donor.

scholarly journals High performance tandem organic solar cells via a strongly infrared-absorbing narrow bandgap acceptor

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Zhenrong Jia ◽  
Shucheng Qin ◽  
Lei Meng ◽  
Qing Ma ◽  
Indunil Angunawela ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
High Performance ◽  
Short Circuit ◽  
Power Conversion ◽  
High Power Conversion Efficiency ◽  
Device Structure ◽  
Narrow Bandgap

AbstractTandem organic solar cells are based on the device structure monolithically connecting two solar cells to broaden overall absorption spectrum and utilize the photon energy more efficiently. Herein, we demonstrate a simple strategy of inserting a double bond between the central core and end groups of the small molecule acceptor Y6 to extend its conjugation length and absorption range. As a result, a new narrow bandgap acceptor BTPV-4F was synthesized with an optical bandgap of 1.21 eV. The single-junction devices based on BTPV-4F as acceptor achieved a power conversion efficiency of over 13.4% with a high short-circuit current density of 28.9 mA cm−2. With adopting BTPV-4F as the rear cell acceptor material, the resulting tandem devices reached a high power conversion efficiency of over 16.4% with good photostability. The results indicate that BTPV-4F is an efficient infrared-absorbing narrow bandgap acceptor and has great potential to be applied into tandem organic solar cells.

scholarly journals Digital printing of a novel electrode for stable flexible organic solar cells with a power conversion efficiency of 8.5%

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
S. Wageh ◽  
Mahfoudh Raïssi ◽  
Thomas Berthelot ◽  
Matthieu Laurent ◽  
Didier Rousseau ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Solution Processed ◽  
Transparent Conducting

AbstractPoly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) mixed with single-wall nanotubes (SWNTs) (10:1) and doped with (0.1 M) perchloric acid (HClO4) in a solution-processed film, working as an excellent thin transparent conducting film (TCF) in organic solar cells, was investigated. This new electrode structure can be an outstanding substitute for conventional indium tin oxide (ITO) for applications in flexible solar cells due to the potential of attaining high transparency with enhanced conductivity, good flexibility, and good durability via a low-cost process over a large area. In addition, solution-processed vanadium oxide (VOx) doped with a small amount of PEDOT-PSS(PH1000) can be applied as a hole transport layer (HTL) for achieving high efficiency and stability. From these viewpoints, we investigate the benefit of using printed SWNTs-PEDOT-PSS doped with HClO4 as a transparent conducting electrode in a flexible organic solar cell. Additionally, we applied a VOx-PEDOT-PSS thin film as a hole transporting layer and a blend of PTB7 (polythieno[3,4-b] thiophene/benzodithiophene): PC71BM (phenyl-C71-butyric acid methyl ester) as an active layer in devices. Zinc oxide (ZnO) nanoparticles were applied as an electron transport layer and Ag was used as the top electrode. The proposed solar cell structure showed an enhancement in short-circuit current, power conversion efficiency, and stability relative to a conventional cell based on ITO. This result suggests a great carrier injection throughout the interfacial layer, high conductivity and transparency, as well as firm adherence for the new electrode.

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