Naphthodithiophene-Diketopyrrolopyrrole Small Molecule Donors for Efficient Solution-Processed Solar Cells

2012 ◽  
Vol 1390 ◽  
Author(s):  
Stephen Loser ◽  
Carson J. Bruns ◽  
Hiroyuki Miyauchi ◽  
Rocío Ponce Ortiz ◽  
Antonio Facchetti ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Electron Acceptor ◽  
Efficient Solution ◽  
Power Conversion ◽  
Hole Mobility ◽  
Side Chain ◽  
Device Performance ◽  
Visible Absorption ◽  
Selection Of

ABSTRACTWe report the synthesis, characterization, and implementation of various naphtho[2,3- b:6,7-b’]dithiophene (NDT)-based donor molecules for organic photovoltaics (OPVs) When NDT(TDPP)2 (TDPP = thiophene-capped diketopyrrolopyrrole) contains all branched 2- ethylhexyl chains and is combined with the electron acceptor PC61BM, a power conversion efficiency (PCE) of 4.06±0.6% is achieved. This respectable PCE is attributed to the broad, high oscillator strength visible absorption, the ordered molecular packing, and a high hole mobility of 0.04 cm2·V-1·s-1. We find utilizing linear C-12 side chains on either the TDPP or NDT framework dramatically increases the d-spacing, which directly correlates with inferior OPV device performance. This leads to the conclusion that the selection of an appropriate side chain plays a key role in determining OPV device performance of a small molecule donor.

An electron acceptor based on indacenodithiophene and 1,1-dicyanomethylene-3-indanone for fullerene-free organic solar cells

2015 ◽  
Vol 3 (5) ◽  
pp. 1910-1914 ◽  
Author(s):  
Huitao Bai ◽  
Yifan Wang ◽  
Pei Cheng ◽  
Jiayu Wang ◽  
Yao Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Small Molecule ◽  
Electron Acceptor ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Solution Processed

A novel small molecule based on indacenodithiophene and 1,1-dicyanomethylene-3-indanone was synthesized and used as an electron acceptor in solution processed organic solar cells, which exhibited a power conversion efficiency as high as 3.93%.

scholarly journals A star-shaped D–π–A small molecule based on a tris(2-methoxyphenyl)amine core for highly efficient solution-processed organic solar cells

2014 ◽  
Vol 2 (36) ◽  
pp. 7614-7620 ◽  
Author(s):  
Jie Min ◽  
Yuriy N. Luponosov ◽  
Alexander N. Solodukhin ◽  
Nina Kausch-Busies ◽  
Sergei A. Ponomarenko ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Efficient Solution ◽  
Power Conversion ◽  
Solution Processed ◽  
Highly Efficient

A star-shaped D–π–A small molecule based on a tris(2-methoxyphenyl)amine donor unit for solution-processed organic solar cells achieves a power conversion efficiency up to 4.38%.

scholarly journals Crystallites ofα-Sexithiophene in Bilayer Small Molecule Organic Solar Cells Double Efficiency

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Michal Radziwon ◽  
André Luis Fernandes Cauduro ◽  
Morten Madsen ◽  
Horst-Günter Rubahn
Keyword(s):  
Solar Cells ◽  
Research And Development ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Device Performance ◽  
Performance Parameters ◽  
Efficiency Increase ◽  
Conversion Efficiencies

Recent efforts in research and development of small molecule based organic solar cells have led to power conversion efficiencies exceeding 10%. Understanding the incorporated interfaces in these devices is an utterly important parameter for their improvement. Here we investigate the influence ofα-sexithiophene (α-6T) nanostructures on the performance parameters ofα-6T/C60inverted bilayer solar cells. Byin situcontrolled growth, crystallineα-6T nanostructures are formed in the devices and a correlation between the morphology of the structures and the device performance is presented. Under certain, well-defined circumstances, we observe an efficiency increase of around 100% when implementing crystalline nanostructures.

Green Solvent-Processed, High-Performance Organic Solar Cells Achieved by Outer Side-Chain Selection of Selenophene-Incorporated Y-Series Acceptors

2021 ◽  
Author(s):  
Changkyun Kim ◽  
Shuhao Chen ◽  
Jin Su Park ◽  
Geon-U Kim ◽  
Hyunbum Kang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Power Conversion ◽  
Side Chain ◽  
Outer Side ◽  
Green Solvent ◽  
Conversion Efficiencies ◽  
Selection Of

While the power conversion efficiencies (PCEs) of organic solar cells (OSCs) have been dramatically increased through the development of small molecular acceptors (SMAs), achieving eco-friendly solution processability of OSCs is...

A fluorene-core-based electron acceptor for fullerene-free BHJ organic solar cells—towards power conversion efficiencies over 10%

2018 ◽  
Vol 54 (32) ◽  
pp. 4001-4004 ◽  
Author(s):  
Suman Suman ◽  
Anirban Bagui ◽  
Ashish Garg ◽  
Barkha Tyagi ◽  
Vinay Gupta ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Small Molecule ◽  
Electron Acceptor ◽  
Organic Solar Cells ◽  
Organic Solar Cell ◽  
Power Conversion ◽  
Conversion Efficiencies

A small molecule non-fullerene electron acceptor (SMNFEA), bearing a furan π-spacer and dicyano-n-hexyl rhodanine as flanking groups, was designed and synthesized for organic solar cell applications.

A thieno[3,4-b]thiophene-based small-molecule donor with a π-extended dithienobenzodithiophene core for efficient solution-processed organic solar cells

2017 ◽  
Vol 1 (11) ◽  
pp. 2349-2355 ◽  
Author(s):  
Wuyue Liu ◽  
Zichun Zhou ◽  
Thomas Vergote ◽  
Shengjie Xu ◽  
Xiaozhang Zhu
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Efficient Solution ◽  
Power Conversion ◽  
Solution Processed

A molecular donor STB-4 with a dithieno[2,3-d′:2′,3′-d′]benzo[1,2-b:4′,5′-b′]dithiophene core was synthesized for organic solar cells with a power conversion efficiency of 8.17%.

scholarly journals Small-Molecule Donor/Polymer Acceptor Type Organic Solar Cells: Effect of Terminal Groups of Small-Molecule Donors

2019 ◽  
Vol 01 (01) ◽  
pp. 088-094 ◽  
Author(s):  
Junhui Miao ◽  
Bin Meng ◽  
Jun Liu ◽  
Lixiang Wang
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Terminal Group ◽  
Device Performance ◽  
The Core ◽  
Polymer Acceptor ◽  
The One

Small-molecule donor/polymer acceptor type (MD/PA-type) organic solar cells (OSCs) have the great advantage of superior thermal stability. However, very few small molecular donors can match polymer acceptors, leading to low power conversion efficiency (PCE) of MD/PA-type OSCs. In this work, we studied the effect of terminal groups of small molecular donors on the optoelectronic properties and OSC device performance of MD/PA-type OSCs. We select a benzodithiophene unit bearing carbazolyl substituents as the core, terthiophene as the bridging unit, and electron-withdrawing methyl 2-cyanoacetate, 3-ethylrhodanine, and 2H-indene-1,3-dione as the terminal groups to develop three small-molecule donors. With the increase of the electron-withdrawing capability of the terminal groups, the small molecular donors exhibit redshifted absorption spectra and downshifted LUMO levels. Among the three small-molecule donors, the one with 3-ethylrhodanine terminal group exhibits the best photovoltaic performance with the PCE of 8.0% in MD/PA-type OSCs. This work provides important guidelines for the design of small-molecule donors for MD/PA-type OSC applications.

High-Performance Polymer Solar Cells Achieved by Introducing Side-Chain Heteroatom on Small-Molecule Electron Acceptor

2018 ◽  
Vol 40 (1) ◽  
pp. 1800393 ◽  
Author(s):  
Jianyun Zhang ◽  
Feng Liu ◽  
Shanshan Chen ◽  
Changduk Yang ◽  
Xiaozhang Zhu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Electron Acceptor ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Side Chain ◽  
High Performance Polymer

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.

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