Indium tin oxide nanopillar electrodes in polymer/fullerene solar cells
作者： David A Rider , Ryan T Tucker , Brian J Worfolk , Kathleen M Krause , Abeed Lalany
DOI: 10.1088/0957-4484/22/8/085706
关键词:
摘要: Using high surface area nanostructured electrodes in organic photovoltaic (OPV) devices is a route to enhanced power conversion efficiency. In this paper, indium tin oxide (ITO) and hybrid ITO/SiO2 nanopillars are employed as three-dimensional transparent OPVs. The nanopillar arrays fabricated via glancing angle deposition (GLAD) electrochemically modified with nanofibrous PEDOT:PSS (poly(3,4-ethylenedioxythiophene):poly(p-styrenesulfonate)). structures found have increased characterized by porosimetry. When applied anodes polymer/fullerene OPVs (architecture: commercial ITO/GLAD ITO/PEDOT:PSS/P3HT:PCBM/Al, where P3HT 2,5-diyl-poly(3-hexylthiophene) PCBM [6,6]-phenyl–C61-butyric acid methyl ester), the air-processed solar cells incorporating area, PEDOT:PSS-modified ITO nanoelectrode operate improved performance relative processed identically on unstructured, substrates. resulting efficiency 2.2% which third greater than for prepared ITO. To further refine structure, insulating SiO2 caps added above GLAD produce nanoelectrode. OPV based system show reduced electrical shorting series resistance, consequence, of 2.5% recorded.
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