Special Section on Organic Photovoltaics

Optimization of transparent electrode processing conditions for bulk heterojunction solar cells

[+] Author Affiliations
Yechuan Sun, Annie Ng, Man Kin Fung, Alan Man Ching Ng, Aleksandra B. Djurišić

University of Hong Kong, Department of Physics, Pokfulam Road, Hong Kong, China

Wai Kin Chan

University of Hong Kong, Department of Chemistry, Pokfulam Road, Hong Kong, China

J. Photon. Energy. 2(1), 021005 (Mar 02, 2012). doi:10.1117/1.JPE.2.021005
History: Received August 1, 2011; Revised November 4, 2011; Accepted January 4, 2012
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Abstract.  In this work, semi-transparent inverted polymer solar cells with poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate; PEDOT:PSS) top electrodes were fabricated by spin-coating process. Poly(3-hexylthiophene; P3HT):[6,6]-phenyl C61-butyric acid methyl ester (PCBM) was used as a model material combination for a bulk heterojunction solar cell, because this material combination has been frequently studied, and its properties and performance have been well established. For enhancing the wetting of P3HT:PCBM blend film, different plasma etching conditions were tried. In addition, different high boiling point organic additives were tried to enhance the conductivity of PEDOT:PSS. The performance of solar cells with different fabrication conditions for the top electrode was compared. The best performance was obtained for Ar plasma etching to improve wetting of PEDOT:PSS and the addition of ethylene glycol to improve conductivity.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Yechuan Sun ; Annie Ng ; Man Kin Fung ; Alan Man Ching Ng ; Aleksandra B. Djurišić, et al.
"Optimization of transparent electrode processing conditions for bulk heterojunction solar cells", J. Photon. Energy. 2(1), 021005 (Mar 02, 2012). ; http://dx.doi.org/10.1117/1.JPE.2.021005


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