scholarly journals Exploring Spray-Coating Techniques for Organic Solar Cell Applications

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Wanyi Nie ◽  
Robert Coffin ◽  
Jiwen Liu ◽  
Christopher M. MacNeill ◽  
Yuan Li ◽  
...  
Keyword(s):  
Solar Cell ◽  
Organic Solar Cell ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Acid Methyl Ester ◽  
Spray Coating ◽  
Photovoltaic Devices ◽  
Spraying Parameters ◽  
Novel Processing ◽  
Conversion Efficiencies

We have investigated spray coating as a novel processing method for organic solar cell fabrication. In this work, spraying parameters and organic solvent influences have been correlated with cell performance. Using airbrush fabrication, bulk heterojunction photovoltaic devices based on a new low band gap donor material: poly[(4,8-bis(1-pentylhexyloxy)benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl-alt-2,1,3-benzoxadiazole-4,7-diyl] with the C60-derivative (6,6)-phenyl C61-butyric acid methyl ester (PCBM) as an acceptor, have achieved power conversion efficiencies over 3%. We show that airbrush fabrication can be carried out with simple solvents such as pristine 1,2-dichlorobenzene. Moreover, the influence of device active area has been studied and the 1 cm2device by spray coating maintained an excellent power conversion efficiency of 3.02% on average.

scholarly journals Understanding the formation of PEDOT:PSS films by ink-jet printing for organic solar cell applications

RSC Advances ◽  
2015 ◽  
Vol 5 (96) ◽  
pp. 78677-78685 ◽  
Author(s):  
Arjun Singh ◽  
Monica Katiyar ◽  
Ashish Garg
Keyword(s):  
Solar Cell ◽  
Organic Solar Cell ◽  
Power Conversion ◽  
Ink Jet Printing ◽  
Ink Jet ◽  
Jet Printing ◽  
Conversion Efficiencies

PEDOT:PSS films were ink-jet printed and were integrated into organic solar cell devices. The devices using printed films yield power conversion efficiencies comparable to the devices using spin coated PEDOT:PSS films.

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.

Intrachain Photophysics of a Donor–Acceptor Copolymer

2021 ◽  
Author(s):  
Hak-Won Nho ◽  
Won-Woo Park ◽  
Byongkyu Lee ◽  
seoyoung Kim ◽  
Changduk Yang ◽  
...  
Keyword(s):  
Bulk Heterojunction ◽  
Power Conversion ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Donor Acceptor ◽  
Conversion Efficiencies

By taking advantage of bulk-heterojunction structures formed by blending conjugated donor polymers and non-fullerene acceptors, organic photovoltaic devices have recently attained promising power conversion efficiencies of above 18%. For optimizing...

Performance of P3HT:PCBM Organic Solar Cell with ZnO Buffer Layer

2014 ◽  
Vol 925 ◽  
pp. 580-584 ◽  
Author(s):  
Mohamad Syafiq Alias ◽  
Sharul Ashikin Kamaruddin ◽  
Che Ani Norhidayah ◽  
Nurulnadia Sarip ◽  
Nayan Nafarizal ◽  
...  
Keyword(s):  
Solar Cell ◽  
Buffer Layer ◽  
Organic Solar Cell ◽  
Bulk Heterojunction ◽  
Short Circuit ◽  
Acid Methyl Ester ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Surface Topology ◽  
Solar Simulator

In this paper, we explore the characteristics of bulk heterojunction solar cell based on poly (3-hexyl thiophene) [P3HT] and [6,6]-phenyl-C61-butyric acid methyl ester [PCBM] by introducing a buffer layer with device configuration of ITO/ZnO/P3HT:PCBM/Au. Nanostructured ZnO with individual diameter around 20-50 nm was used as the buffer layer and its effects on the short circuit current density, Jsc and open circuit voltage, Voc were investigated. It was found that, the electrical characteristic of the organic solar cell was obviously changed by introducing the buffer layer. Solar cell characteristic with Voc of 0.3939 V was obtained but the Jsc was very small. The surface topology of the P3HT:PCBM was investigated using an atomic force microscopy (AFM). ZnO nanoparticles were observed using a field emission scanning electron microscope (FESEM) and the electrical properties of the solar cell was measured using a solar simulator with a current – voltage (I-V) measurement system.

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.

scholarly journals ITO-Free Transparent Organic Solar Cell with Distributed Bragg Reflector for Solar Harvesting Windows

2017 ◽  
Author(s):  
Yuelin Peng ◽  
Lushuai Zhang ◽  
Nongyi Cheng ◽  
Trisha L. Andrew
Keyword(s):  
Solar Cell ◽  
Organic Solar Cell ◽  
Cell Structure ◽  
Power Conversion ◽  
Bragg Reflector ◽  
Distributed Bragg Reflector ◽  
Visible Transmittance ◽  
Solar Cell Structure ◽  
Multilayer Electrode ◽  
Conversion Efficiencies

We demonstrated an ITO-free, highly transparent organic solar cell with the potential to be integrated into window panes for energy harvesting purposes. A transparent, conductive ZnO/Ag/ZnO multilayer electrode and a Ag:Ca thin film electrode were used in this transparent device as the bottom and top electrode, respectively. To further improve the transmittance of the solar cell, the thickness of the top ZnO layer was investigated by both experiment and simulation. An average visible transmittance of > 60% was reached, with a maximum transmittance of 73% at 556 nm. Both top and bottom illumination of the solar cell generated comparable power conversion efficiencies, which indicates the wide application of this solar cell structure. In addition, we fabricated distributed Bragg reflector mirrors with sputtered SiO2 and TiO2, which efficiently increased the power conversion efficiency over 20% for the solar cells on glass and PET substrates,

Sign in / Sign up

Export Citation Format

Share Document