Large band-gap copolymers based on a 1,2,5,6-naphthalenediimide unit for polymer solar cells with high open circuit voltages and power conversion efficiencies

2016 ◽  
Vol 4 (19) ◽  
pp. 7372-7381 ◽  
Author(s):  
Zuojia Li ◽  
Kui Feng ◽  
Jiang Liu ◽  
Jun Mei ◽  
Ying Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Open Circuit ◽  
Active Layers ◽  
Photovoltaic Applications ◽  
Conversion Efficiencies ◽  
Open Circuit Voltages

Large band-gap copolymers based on 1,2,5,6-naphthalenediimide were developed for photovoltaic applications. A PCE of 6.35% was obtained by gradually optimizing the morphology of active layers.

Enhanced open-circuit voltage in polymer solar cells by dithieno[3,2-b:2′,3′-d]pyrrole N-acylation

2014 ◽  
Vol 2 (20) ◽  
pp. 7535-7545 ◽  
Author(s):  
Wouter Vanormelingen ◽  
Jurgen Kesters ◽  
Pieter Verstappen ◽  
Jeroen Drijkoningen ◽  
Julija Kudrjasova ◽  
...  
Keyword(s):  
Solar Cells ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Open Circuit ◽  
Higher Power ◽  
Conversion Efficiencies ◽  
Open Circuit Voltages

N-Acylation of dithieno[3,2-b:2′,3′-d]pyrrole (DTP) leads to enhanced open-circuit voltages and hence higher power conversion efficiencies in polymer solar cells.

Theoretical Investigations of Polymer Based Solar Cells

2004 ◽  
Vol 822 ◽  
Author(s):  
Robert S. Echols ◽  
Chris E. France
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Band Gap ◽  
Polymer Blend ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Normal Incidence ◽  
Open Circuit ◽  
Action Spectra ◽  
Conversion Efficiencies

AbstractWe investigate the behavior of a polymer blend (M3EH-PPV:CN-ether-PPV) bulk heterojunction solar cell using a numeric model that self-consistently solves Poisson's equation and the charge continuity equation while incorporating electric field dependent mobilities. We obtain good quantitative agreement with present experimental data for J-V curves and photocurrent action spectra. To reproduce experimental photocurrent action spectra, our model predicts 36% exciton dissociation efficiencies in the bulk of the polymer. We also study the limiting conditions of polymer solar cell development by simulating an ideal solar cell using an AM1.5 global spectrum and assuming all absorbed photons hitting a M3EH-PPV:CN-ether-PPV polymer blend (band gap ∼2.0 eV) based solar cell at normal incidence contribute to current. If such a solar cell has 100 nm length, open circuit voltage=0.6 V and 50% fill factor, then the maximum theoretical power conversion efficiency is ηp=5.6%. A similar analysis for a M3EH-PPV:PCBM bulk heterojunction cell yields, ηp=3.5%. These results further highlight the need to develop smaller band gap materials and help explain why the best polymer based solar cells have power conversion efficiencies that remain stuck at about 3%. Our model is used to investigate the important increase in power conversion efficiencies we can expect as lower band gap polymers become available.

Ternary organic solar cells: using molecular donor or acceptor third components to increase open circuit voltage

2019 ◽  
Vol 43 (26) ◽  
pp. 10442-10448 ◽  
Author(s):  
Sergey V. Dayneko ◽  
Arthur D. Hendsbee ◽  
Jonathan R. Cann ◽  
Clément Cabanetos ◽  
Gregory C. Welch
Keyword(s):  
Solar Cells ◽  
Organic Photovoltaics ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Power Conversion ◽  
Open Circuit ◽  
Molecular Semiconductors ◽  
Conversion Efficiencies ◽  
Open Circuit Voltages

The addition of donor or acceptor type molecular semiconductors to PBDB-T:PC60BM based organic photovoltaics leads to increases in open circuit-voltages and overall power conversion efficiencies.

High-performance wide-bandgap copolymers with dithieno[3,2-b:2′,3′-d]pyridin-5(4H)-one units

2019 ◽  
Vol 3 (3) ◽  
pp. 399-402 ◽  
Author(s):  
Yaxin Gao ◽  
Dan Li ◽  
Zuo Xiao ◽  
Xin Qian ◽  
Junliang Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Power Conversion ◽  
Wide Bandgap ◽  
Open Circuit ◽  
Conversion Efficiencies ◽  
Open Circuit Voltages

Dithieno[3,2-b:2′,3′-d]pyridin-5(4H)-one-based wide-bandgap copolymers gave high open-circuit voltages and decent power conversion efficiencies in nonfullerene organic solar cells.

scholarly journals Trifluoromethyl-Substituted Large Band-Gap Polytriphenylamines for Polymer Solar Cells with High Open-Circuit Voltages

Polymers ◽  
2018 ◽  
Vol 10 (1) ◽  
pp. 52 ◽  
Author(s):  
Shuwang Yi ◽  
Wanyuan Deng ◽  
Sheng Sun ◽  
Linfeng Lan ◽  
Zhicai He ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Polymer Solar Cells ◽  
Open Circuit ◽  
Open Circuit Voltages

Indolo[3,2-b]carbazole and benzofurazan based narrow band-gap polymers for photovoltaic cells

2014 ◽  
Vol 38 (9) ◽  
pp. 4587-4593 ◽  
Author(s):  
Bin Zhang ◽  
Lei Yu ◽  
Li Fan ◽  
Na Wang ◽  
Liwen Hu ◽  
...  
Keyword(s):  
Band Gap ◽  
Narrow Band ◽  
Power Conversion ◽  
Photovoltaic Cells ◽  
Open Circuit ◽  
Maximum Power ◽  
Conversion Efficiencies ◽  
Open Circuit Voltages

Two indolo[3,2-b]carbazole and 5,6-bis(octyloxy)benzofurazan based narrow band-gap polymersPICzODTBFandPICzHDDTBFgive maximum power conversion efficiencies of 3.32% and 3.13% with open circuit voltages of 0.80 V and 0.95 V, respectively.

A wide band gap polymer based on indacenodithieno[3,2-b]thiophene for high-performance bulk heterojunction polymer solar cells

2017 ◽  
Vol 5 (2) ◽  
pp. 712-719 ◽  
Author(s):  
Woosung Lee ◽  
Jae Woong Jung
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
High Performance ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Wide Band ◽  
Wide Band Gap ◽  
Conversion Efficiencies

A novel wide band gap polymer (PIDTT-TT) has been synthesized to use in efficient polymer solar cells with power conversion efficiencies up to 7.10%.

Novel wide band gap polymers based on dithienobenzoxadiazole for polymer solar cells with high open circuit voltages over 1 V

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 51419-51425 ◽  
Author(s):  
Dakang Ding ◽  
Jiuxing Wang ◽  
Weiye Chen ◽  
Meng Qiu ◽  
Junzhen Ren ◽  
...  
Keyword(s):  
Solar Cells ◽  
Oxygen Atom ◽  
Band Gap ◽  
Polymer Solar Cells ◽  
Wide Band ◽  
Open Circuit ◽  
Wide Band Gap ◽  
Open Circuit Voltages

Just by replacing sulfur with oxygen atom, the Voc of PBDT-fDTBO based PSCs is 0.2 V higher than PBDT-fDTBT based devices.

scholarly journals Micro-sized thin-film solar cells via area-selective electrochemical deposition for concentrator photovoltaics application

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Daniel Siopa ◽  
Khalil El Hajraoui ◽  
Sara Tombolato ◽  
Finn Babbe ◽  
Alberto Lomuscio ◽  
...  
Keyword(s):  
Solar Cells ◽  
Concentration Factor ◽  
Power Conversion ◽  
Open Circuit ◽  
Photovoltaic Devices ◽  
Large Area ◽  
Higher Power ◽  
Light Concentration ◽  
Conversion Efficiencies ◽  
Open Circuit Voltages

Abstract Micro-concentrator solar cells enable higher power conversion efficiencies and material savings when compared to large-area non-concentrated solar cells. In this study, we use materials-efficient area-selective electrodeposition of the metallic elements, coupled with selenium reactive annealing, to form Cu(In,Ga)Se2 semiconductor absorber layers in patterned microelectrode arrays. This process achieves significant material savings of the low-abundance elements. The resulting copper-poor micro-absorber layers’ composition and homogeneity depend on the deposition charge, where higher charge leads to greater inhomogeneity in the Cu/In ratio and to a patchy presence of a CuIn5Se8 OVC phase. Photovoltaic devices show open-circuit voltages of up to 525 mV under a concentration factor of 18 ×, which is larger than other reported Cu(In,Ga)Se2 micro-solar cells fabricated by materials-efficient methods. Furthermore, a single micro-solar cell device, measured under light concentration, displayed a power conversion efficiency of 5% under a concentration factor of 33 ×. These results show the potential of the presented method to assemble micro-concentrator photovoltaic devices, which operate at higher efficiencies while using light concentration.

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