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Highly efficient bulk heterojunction photovoltaic cell based on tris[4-(5-phenylthiophen-2-yl)phenyl]amine and C70 combined with optimized electron transport layer
- Source :
- Applied Physics Letters. 102:153302
- Publication Year :
- 2013
- Publisher :
- AIP Publishing, 2013.
-
Abstract
- Efficient bulk heterojunction (BHJ) photovoltaic cells (PVs) based on 5 wt. % donors and C70 were fabricated. Tris[4-(5-phenylthiophen-2-yl)phenyl]-amine (TPTPA)-based BHJ PVs show higher power conversion efficiency (ηPCE) than aluminum phthalocyanine chloride-based BHJ PVs. Although the absorption of AlPcCl is complementary to that of C70, TPTPA's high hole mobility and symmetrical molecular structure are likely to be crucial contributing factors to the higher ηPCE. Phase separation occurs in the 5%-TPTPA blend. The device was optimized via replacement of the bathocuproine buffer by a combination of 3,4,9,10-perylenetetracarboxylic bis-benzimidazole and bathocuproine. ηPCE of 5.96% is achieved because of the decreased series resistance.
- Subjects :
- Tris
Electron mobility
Materials science
Physics and Astronomy (miscellaneous)
Equivalent series resistance
Energy conversion efficiency
Analytical chemistry
Polymer solar cell
Organic semiconductor
chemistry.chemical_compound
Chemical engineering
chemistry
Molecule
Absorption (electromagnetic radiation)
Subjects
Details
- ISSN :
- 10773118 and 00036951
- Volume :
- 102
- Database :
- OpenAIRE
- Journal :
- Applied Physics Letters
- Accession number :
- edsair.doi...........f8f10399df84e4bbf3db08f41c063432
- Full Text :
- https://doi.org/10.1063/1.4801954