scholarly journals Singlet Exciton Lifetimes in Conjugated Polymer Films for Organic Solar Cells

Polymers ◽  
2016 ◽  
Vol 8 (1) ◽  
pp. 14 ◽  
Author(s):  
Stoichko Dimitrov ◽  
Bob Schroeder ◽  
Christian Nielsen ◽  
Hugo Bronstein ◽  
Zhuping Fei ◽  
...  
Keyword(s):  
Solar Cells ◽  
Polymer Films ◽  
Organic Solar Cells ◽  
Conjugated Polymer ◽  
Singlet Exciton

Conjugated Polymer-Based Organic Solar Cells

2007 ◽  
Vol 107 (4) ◽  
pp. 1324-1338 ◽  
Author(s):  
Serap Günes ◽  
Helmut Neugebauer ◽  
Niyazi Serdar Sariciftci
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Conjugated Polymer

scholarly journals Low-Energy Scanning Electron Transmission Measurements of Thin Polymer Films Employed in Organic Solar Cells

2010 ◽  
Vol 16 (S2) ◽  
pp. 1382-1383
Author(s):  
M Pfaff ◽  
E Müller ◽  
MFG Klein ◽  
A Colsmann ◽  
U Lemmer ◽  
...  
Keyword(s):  
Solar Cells ◽  
Polymer Films ◽  
Organic Solar Cells ◽  
Low Energy ◽  
Thin Polymer Films ◽  
Electron Transmission ◽  
Thin Polymer ◽  
Transmission Measurements ◽  
Scanning Electron

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – August 5, 2010.

New 2D-Conjugated Polymer for Non-Halogenated and Halogenated Solvents Processed Organic Solar Cells

2018 ◽  
Vol 26 (13) ◽  
pp. 1276-1279 ◽  
Author(s):  
Um Kanta Aryal ◽  
Ho-Yeol Park ◽  
Woosum Cho ◽  
Sung-Ho Jin ◽  
Yoon-Hwae Hwang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Conjugated Polymer ◽  
Halogenated Solvents

A selenophene substituted double-cable conjugated polymer enables efficient single-component organic solar cells

2020 ◽  
Vol 8 (8) ◽  
pp. 2790-2797 ◽  
Author(s):  
Peiting Yu ◽  
Guitao Feng ◽  
Junyu Li ◽  
Cheng Li ◽  
Yunhua Xu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Organic Solar Cells ◽  
Conjugated Polymer ◽  
Single Component

Double-cable conjugated polymers with selenophene substituted conjugated backbones were developed for single-component organic solar cells with an efficiency of 6.25%.

Conjugated Polymer-Based Organic Solar Cells

ChemInform ◽  
2007 ◽  
Vol 38 (31) ◽  
Author(s):  
Serap Guenes ◽  
Helmut Neugebauer ◽  
Niyazi Serdar Sariciftci
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Conjugated Polymer

A strong regioregularity effect in self-organizing conjugated polymer films and high-efficiency polythiophene:fullerene solar cells

2006 ◽  
Vol 5 (3) ◽  
pp. 197-203 ◽  
Author(s):  
Youngkyoo Kim ◽  
Steffan Cook ◽  
Sachetan M. Tuladhar ◽  
Stelios A. Choulis ◽  
Jenny Nelson ◽  
...  
Keyword(s):  
Solar Cells ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
High Efficiency ◽  
Self Organizing

scholarly journals Templated Growth of Fullerene C60 Crystals by Triptycene in  Polymer Blend Films

2021 ◽  
Author(s):  
◽  
Cole Ross Lomas
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Solar Cell ◽  
Polymer Film ◽  
Active Layer ◽  
Polymer Films ◽  
Conjugated Polymer ◽  
Electronic Devices ◽  
Fullerene C60 ◽  
Film Morphology

<p>Molecular semiconductors such as fullerene C60 have become ubiquitous components of organic electronic devices, owing to their electronic structure and favourable material processing properties. In most conjugated polymer-fullerene films that form the active layer in bulk heterojunction (BHJ) organic solar cells, organisation of the fullerene phases to the correct nanoscale dimensions for exciton charge separation and transportation to the device electrodes is driven by excess fullerene addition. While this approach can deliver acceptable film morphology for a BHJ solar cell, it is not optimal as the photoactive polymer component of the film becomes diluted by C60 thereby reducing device efficiency. This motivates a supramolecular approach as an alternative method to control fullerene assembly and give morphological control of conjugated polymer films. Triptycene (TPC) is a readily available molecule whose rigid paddle wheel structure and hydrophobicity present three excellent C60 binding cavities. Triptycene has the potential to template the macroscopic assembly of fullerene molecules within a polymer-fullerene blend film, thereby controlling phase separation without excess fullerene addition. In this project, the ability of TPC to template the assembly of C60 was investigated in single crystals, polymer films, and in functional electronic devices. Blue-shifted fluorescence from TPC·C60 co-crystals was used as a spectroscopic signature to probe the molecular environment of C60 dispersed through an optically transparent polystyrene polymer film, and confirm that TPC hosts C60 molecules within the polymer matrix. Ultraviolet-visible (UV-Vis) spectroscopy of the polystyrene:C60:TPC films confirmed a reduction in the orbital overlap between adjacent C60 molecules providing further evidence that TPC had spatially separated C60 molecules upon templating the macroscopic assembly. When TPC was added to conjugated polymer poly[2-methoxy-5-(2-ethyhexyloxy)-1,4-phenylene vinylene] (MEH-PPV) and MEHPPV: C60 films as a blend additive, fluorescence spectroscopy identified two unique effects: (1) the suppression of excimer states when TPC spatially separated the conjugated polymer chains, and (2) the assembly of C60 into larger domains to drive polymer and C60 phase separation, giving morphological control of the polymer film. The fabrication of polystyrene:C60:TPC sandwich devices showed the electronic conduction of C60 was unaltered by spatial separation and reduction in electronic coupling between neighbouring C60 molecules caused by TPC templation. MEHPPV: C60 BHJ solar cells suffered a loss in photocurent when TPC was added to the active layer when compared to fabricated devices that used excess fullerene addition to control film morphology. However, due to time constraints, only one polymer film composition was able to be tested. Since the polymer film morphology was shown to be sensitive to the molar ratios of C60 and TPC, there is immense potential to further investigate TPC as a blend additive in conjugated polymer films and optimise the film composition to obtain desirable morphology for a BHJ solar cell. The functionalisation of TPC could provide a method to further enhance interactions between TPC and C60 and provide greater control over C60 self-assembly within a polymer film.</p>

MEH-PPV/Carbon Nanopearls Nanocomposites for Enhanced Organic Solar Cells Efficiencies

2019 ◽  
Vol 58 ◽  
pp. 68-73
Author(s):  
Adnen Ltaief ◽  
Farah Laariedh ◽  
Toufik B. Badèche ◽  
Abdelaziz Bouazizi ◽  
Vu Thien Binh
Keyword(s):  
Solar Cells ◽  
Electron Donor ◽  
Electron Acceptor ◽  
Organic Solar Cells ◽  
Conjugated Polymer ◽  
Dielectric Measurements ◽  
Donor Material ◽  
Photoelectric Properties ◽  
Photoactive Materials ◽  
Carbon Nanopearls

An organic nanocomposites, based on a conjugated polymer (MEH-PPV) as electron donor material and carbon nanopearls (CNPs) as electron acceptor material, have been elaborated and optoelectronically studied. The effect of CNPs concentration on the electric and photoelectric properties in these blends has been investigated. Dielectric measurements demonstrate that the blend conductivity displays a dramatic increase, reaching 0.6 S/m for a CNPs concentration about 1 wt.%. The elaborated organic nanocomposites were used as photoactive materials in organic solar cells.

Balance between Energy Transfer and Exciton Separation in Ternary Organic Solar Cells with Two Conjugated Polymer Donors

2020 ◽  
Vol 3 (6) ◽  
pp. 5792-5803 ◽  
Author(s):  
Leiping Duan ◽  
Yu Zhang ◽  
Rong Deng ◽  
Haimang Yi ◽  
Ashraf Uddin
Keyword(s):  
Energy Transfer ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Conjugated Polymer
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