Squaraine Planar-Heterojunction Solar Cells. (7th July 2009)

• Record Type: Journal Article
• Authors: Fan, Bin; Maniglio, Ylenia; Simeunovic, Marina; Kuster, Simon; Geiger, Thomas; Hany, Roland; Nüesch, Frank
• Other Names: Abdel-Mottaleb Mohamed Sabry Academic Editor.
• Is Part Of: International journal of photoenergy. Volume 2009(2009)
• Publication Date: 2009-07-07
• Subjects: Photochemistry -- Periodicals; Photobiology -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Photochimie; Photobiologie; Chimie physique et théorique; Chemistry, Physical and theoretical; Photobiology; Photochemistry; Electronic journals; Periodicals; 541.35
• DOI: 10.1155/2009/581068
• Languages: English
• ISSNs: 1110-662X

Abstract

Abstract : The photovoltaic performance of squaraine-based organic solar cells is investigated. Two squaraine derivatives with extraordinarily high extinction coefficients are used as electron donors in bilayer heterojunctions with fullereneC 60 as electron acceptor. Due to the very strong squaraine absorption band in the red spectral domain, antibatic behavior due to light filtering is observed in the photocurrent spectrum for film thicknesses of 35 nm to 40 nm. At reduced film thicknesses of 20 nm, this filtering effect at maximum absorption can be alleviated and power conversion efficiencies under simulated AM 1.5 full sun irradiation of 0.59% and 1.01% are obtained for the two squaraine derivatives, respectively. The photovoltaic properties of these cells are investigated with respect to electrode materials and chemical doping.