期刊
ORGANIC ELECTRONICS
卷 42, 期 -, 页码 42-46出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2016.12.018
关键词
Nanoparticles; Polymer solar cells; Low bandgap polymer; Miniemulsion; Eco-friendly processing
资金
- Hasselt University (BOF)
- Research Foundation Flanders (FWO) [G.0415.14N]
- Science Policy Office of the Belgian Federal Government(BELSPO)
- Science Policy Office of the Belgian Federal Government (BELSPO) [IAP 7/05]
In this work we report on the eco-friendly processing of PBDTTPD:PC71BM organic solar cells using water-based nanoparticle (NP) dispersions. The polymer:fullerene NPs are prepared using the miniemulsion-solvent evaporation method, despite employing high-boiling solvents. Polymer solar cells are fabricated from these blend NPs and the device characteristics are studied in function of annealing time and temperature. The photoactive layer formation is carefully analyzed using atomic force microscopy (AFM). Annealing for longer times significantly increases the power conversion efficiency (PCE), up to 3.8%, the highest value reported for surfactant based NP solar cells. Our work shows that the low bandgap polymer PBDTTPD has the ability to afford reasonable efficiencies in NP solar cells in combination with PC71BM and paves the way to a truly eco-friendly processing of organic photovoltaics (OPVs). (C) 2016 Elsevier B.V. All rights reserved.
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