scholarly journals Novel Terthiophene-Substituted Fullerene Derivatives as Easily Accessible Acceptor Molecules for Bulk-Heterojunction Polymer Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Filippo Nisic ◽  
Alessia Colombo ◽  
Claudia Dragonetti ◽  
Alessandra Cominetti ◽  
Andrea Pellegrino ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Radiation ◽  
Band Gap ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Fullerene Derivatives ◽  
Heterojunction Solar Cells ◽  
Good Solubility ◽  
Lumo Level ◽  
Adequate Design

Five fulleropyrrolidines and methanofullerenes, bearing one or two terthiophene moieties, have been prepared in a convenient way and well characterized. These novel fullerene derivatives are characterized by good solubility and by better harvesting of the solar radiation with respect to traditional PCBM. In addition, they have a relatively high LUMO level and a low band gap that can be easily tuned by an adequate design of the link between the fullerene and the terthiophene. Preliminary results show that they are potential acceptors for the creation of efficient bulk-heterojunction solar cells based on donor polymers containing thiophene units.

CuO Nanoparticles Based Bulk Heterojunction Solar Cells: Investigations on Morphology and Performance

2015 ◽  
Vol 137 (3) ◽  
Author(s):  
Aruna P. Wanninayake ◽  
Subhashini Gunashekar ◽  
Shengyi Li ◽  
Benjamin C. Church ◽  
Nidal Abu-Zahra
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Energy Gap ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Band Gap Energy ◽  
Cuo Nanoparticles ◽  
Scanning Calorimetry ◽  
Heterojunction Solar Cells ◽  
And Performance

Copper oxide (CuO) is a p-type semiconductor having a band gap energy of 1.5 eV, which is close to the ideal energy gap of 1.4 eV required for solar cells to allow good solar spectral absorption. The inherent electrical characteristics of CuO nanoparticles make them attractive candidates for improving the performance of polymer solar cells (PSCs) when incorporated in the active polymer layer. The incorporation of CuO nanoparticles in P3HT/PC70BM solar cells at the optimum concentration yields 40.7% improvement in power conversion efficiency (PCE). The CuO nanoparticles in the size range of 100–150 nm have an effective average band gap of 2.07 eV. In addition, the X-ray diffraction (XRD) and differential scanning calorimetry (DSC) analyses show improvement in P3HT crystallinity, and surface analysis by atomic force microscope (AFM) shows an increase in surface roughness of the PSCs. The key factors namely photo-absorption, exciton diffusion, dissociation, charge transport, and charge collection inside the PSCs which affect the external quantum efficiency (EQE) and PCE of these cells are analyzed.

scholarly journals Diselenogermole as a novel donor monomer for low band gap polymers

2015 ◽  
Vol 3 (5) ◽  
pp. 1986-1994 ◽  
Author(s):  
Zhuping Fei ◽  
Raja Shahid Ashraf ◽  
Yang Han ◽  
Sarah Wang ◽  
Chin Pang Yau ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Low Band Gap ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Low Band Gap Polymers

Soluble co-polymers of the fused selenophene monomer, DSG, with N-octylthienopyrrolodione are reported. Polymer solar cells fabricated from blends with PC71BM exhibit promising performance in inverted bulk heterojunction solar cells

Carbazole linked phenylquinoline-based fullerene derivatives as acceptors for bulk heterojunction polymer solar cells: effect of interfacial contacts on device performance

2014 ◽  
Vol 2 (19) ◽  
pp. 6916 ◽  
Author(s):  
Pachagounder Sakthivel ◽  
Kakaraparthi Kranthiraja ◽  
Chinnusamy Saravanan ◽  
Kumarasamy Gunasekar ◽  
Hong Il Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Device Performance ◽  
Fullerene Derivatives

High photovoltage achieved in low band gap polymer solar cells by adjusting energy levels of a polymer with the LUMOs of fullerene derivatives

2008 ◽  
Vol 18 (45) ◽  
pp. 5468 ◽  
Author(s):  
Fengling Zhang ◽  
Johan Bijleveld ◽  
Erik Perzon ◽  
Kristofer Tvingstedt ◽  
Sophie Barrau ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Polymer Solar Cells ◽  
Energy Levels ◽  
Low Band Gap ◽  
Fullerene Derivatives ◽  
Low Band Gap Polymer

Reduced Bimolecular Recombination in Conjugated Polymer Donor/Fullerene Acceptor Bulk Heterojunction Solar Cells

2012 ◽  
Vol 65 (5) ◽  
pp. 442 ◽  
Author(s):  
Attila J. Mozer ◽  
Tracey M. Clarke
Keyword(s):  
Solar Cells ◽  
Conjugated Polymer ◽  
Bulk Heterojunction ◽  
Polymer Solar Cells ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Roll To Roll ◽  
Active Layers ◽  
Bimolecular Recombination

We show significantly reduced bimolecular recombination in a novel silole-based copolymer (KP115):fullerene blend, which allows the fabrication of polymer solar cells with relatively thick active layers. This leads to improved device efficiencies and makes roll-to-roll printing much easier. The origin of the reduced recombination, however, is not known. Our recent data suggest that published models are inadequate to explain this phenomenon.

Influence of the Fullerene LUMO Level on the Stability of Bulk Heterojunction Solar Cells

2021 ◽  
Author(s):  
Andreas Distler ◽  
Kap-Soo Cheon ◽  
David Waller ◽  
Dirk M. Guldi ◽  
Jens Hauch ◽  
...  
Keyword(s):  
Solar Cells ◽  
Bulk Heterojunction ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Lumo Level ◽  
The Stability

Poly(3-hexylthiophene) (P3HT) is combined with a series of C60-based derivatives with LUMO energies varying between -3.53 and -3.83 eV, in order to study the influence of the fullerene LUMO level...

scholarly journals Synthesis, optoelectronic properties and photovoltaic performances of wide band-gap copolymers based on dibenzosilole and quinoxaline units, rivals to P3HT

2016 ◽  
Vol 7 (25) ◽  
pp. 4160-4175 ◽  
Author(s):  
F. Caffy ◽  
N. Delbosc ◽  
P. Chávez ◽  
P. Lévêque ◽  
J. Faure-Vincent ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Wide Band ◽  
Optoelectronic Properties ◽  
Wide Band Gap ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Conversion Efficiencies

Dibenzosilole and quinoxaline based copolymers were synthesized and tested in bulk-heterojunction solar cells showing power conversion efficiencies up to 5.14%.

Bulk heterojunction solar cells based on a new low-band-gap polymer: Morphology and performance

2011 ◽  
Vol 12 (7) ◽  
pp. 1211-1215 ◽  
Author(s):  
Yanguang Zhang ◽  
Zhao Li ◽  
Salem Wakim ◽  
Salima Alem ◽  
Sai-Wing Tsang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Bulk Heterojunction ◽  
Low Band Gap ◽  
Polymer Morphology ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
And Performance ◽  
Low Band Gap Polymer
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