期刊
NANO ENERGY
卷 2, 期 5, 页码 897-905出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2013.03.009
关键词
Morphology; OPV; Nanoparticle; Solar Paint
类别
资金
- Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
- Australian Solar Institute
- Indonesian Directorate General of Higher Education (DIKTI)
- Commonwealth of Australia
Polymer:fullerene blends are an attractive materials system for organic photovoltaic applications and conventionally are processed into thin films via chlorinated solvent based routes. Recently, the fabrication of OPV devices from water-dispersed nanoparticulate materials (solar paint) has attracted increasing interest since it offers the potential of morphological control coupled with device processing in the absence of an organic solvent. However, to date there have been no studies of the effect of different acceptors in the nanoparticle structure. In this letter, we report the performance of nanoparticulate organic photovoltaic (NPOPV) devices fabricated from poly(3-hexylthiophene) (P3HT):indene-C-60-bisadduct (ICBA) blends. These devices exhibit power conversion efficiencies of 2.5%, which is the highest so far reported for NPOPV cells. Using a combination of scanning transmission X-ray microscopy and thermodynamic modelling we show that the improved performance is driven by the enhanced miscibility of ICBA in P3HT, which results in a more efficient intermixed structure in the annealed devices. (C) 2013 Elsevier Ltd. All rights reserved.
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