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Bulk heterojunction solar cells based on a new low-band-gap polymer: Morphology and performance
- Publication Year :
- 2011
-
Abstract
- Polymer-fullerene bulk heterojunction (BHJ) solar cells have gained much attention in the past few years due to their potential as a low cost photovoltaic technology. The state-of-the-art power conversion efficiency (PCE) has been improved to 7% regime by the recent development of thieno[3,4-b] thiophene based low-band-gap polymers. This paper reports a new low-band-gap polymer with alternating thieno[3,4-b]thiophene and benzo[1,2-b:4,5-b′] dithiophene units for applications in BHJ solar cells. By optimizing the nano-scale morphology with DIO (1,8-diiodooctane) additive, the PCE of BHJ solar cells based on this new polymer has been improved dramatically from 1.4% to 4.8%. The correlation between photovoltaic performance and film morphology has been established for this new polymer/fullerene system. © 2011 Elsevier B.V. All rights reserved.
- Subjects :
- Morphology
Solar cells
Materials science
Band gap
Bulk heterojunction
Nanotechnology
Bulk heterojunction solar cells
Photovoltaic performance
Conjugated polymers
Power conversion efficiencies
Polymer solar cell
law.invention
Solar power generation
Biomaterials
chemistry.chemical_compound
law
Thiophene
Solar cell
Materials Chemistry
Electrical and Electronic Engineering
Low costs
Mobility
Low-band-gap polymers
Photovoltaic system
Energy conversion efficiency
Heterojunction
General Chemistry
Hybrid solar cell
Nanostructured materials
Condensed Matter Physics
Electronic, Optical and Magnetic Materials
Photovoltaic technology
Film morphology
Polymer-fullerene
chemistry
Photovoltaic effects
Heterojunctions
Polymer materials
Nano scale
Conversion efficiency
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....51e695d2a63fd64c00177affa3e8dc35