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Proceedings Paper

Wide-bandgap organic photovoltaics on flexible plastic substrates using conducting polymer electrodes
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Paper Abstract

Single heterojunction and multi-heterojunction, small-molecule organic photovoltaic devices (OPVs) have been prepared on Glass/ITO and fully-flexible thermoplastic substrates using pre-patterned, conducting polymer electrodes (~ 450Ω/□). OPVs were fabricated via sequential vacuum vapor deposition of layers of the organic electron donating/hole transporting material: N,N'-(a-naphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine (a-NPD) and the electron accepting/transporting material C60. Devices built on glass/ITO substrates operated with a maximum, white-light power conversion efficiency (ηpower) of 1.1% (AM1.5, 97 mW/cm2). Analogous devices fabricated on fully-flexible, plastic substrates using conducting polymer transparent electrodes exhibited white-light power conversion efficiencies of ~1%, virtually identical to those fabricated on prepatterned ITO/glass substrates. The glass/ITO cells were further optimized by including an exciton blocking layer of 2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP) and their ηpowerS exhibited a 30% increase to 1.3%.

Paper Details

Date Published: 3 November 2004
PDF: 8 pages
Proc. SPIE 5520, Organic Photovoltaics V, (3 November 2004); doi: 10.1117/12.565017
Show Author Affiliations
Gary P. Kushto, Naval Research Lab. (United States)
Woohong Kim, Naval Research Lab. (United States)
Zakya H. Kafafi, Naval Research Lab. (United States)


Published in SPIE Proceedings Vol. 5520:
Organic Photovoltaics V
Zakya H. Kafafi; Paul A. Lane, Editor(s)

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