Optimization of process parameters for high-efficiency polymer photovoltaic devices based on P3HT:PCBM system

Here, we report the fabrication of high-efficiency poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C 61-butyric acid methyl ester (PCBM) blend photovoltaic device. Process parameters like solvent, solvent drying conditions, electron donor to acceptor ratio and cathodes structures are optimized in mak...

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Bibliographic Details
Published in:Solar energy materials and solar cells 2007-08, Vol.91 (13), p.1187-1193
Main Authors: Jin, Sung-Ho, Vijaya Kumar Naidu, B., Jeon, Han-Soo, Park, Sung-Min, Park, Jin-Soo, Chul Kim, Sung, Wook Lee, Jae, Gal, Yeong-Soon
Format: Article
Language:English
Subjects:
Applied sciences
Cosolvent
Drying time
Energy
Equipments, installations and applications
Exact sciences and technology
G-PEDOT:PSS
Natural energy
P3HT
Photovoltaic conversion
Photovoltaic devices
Solar energy
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Summary:Here, we report the fabrication of high-efficiency poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C 61-butyric acid methyl ester (PCBM) blend photovoltaic device. Process parameters like solvent, solvent drying conditions, electron donor to acceptor ratio and cathodes structures are optimized in making the devices. For the first time, we used cosolvent systems to make active layer of P3HT:PCBM composite and G-PEDOT:PSS, made by mixing 6 wt% glycerol to PEDOT:PSS, is used as a buffer layer. Highest efficiency of 4.64% was obtained for the device made with 1:0.7 ratio of P3HT to PCBM, o-dichlorobenzene:chloroform cosolvent, newly developed slow process and G-PEDOT:PSS. Film morphology is evaluated by atomic force microscopy (AFM). Time-of-flight (TOF) and incident photon-to-current conversion efficiency (IPCE) measurements are also performed for the best device.
ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2007.04.001