Patternable polymer bulk heterojunction photovoltaic cells on plastic by rotogravure printing |
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| Authors: | Jau M. Ding Alejandro de la Fuente Vornbrock Vivek Subramanian |
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| Affiliation: | a Electronics and Optoelectronics Research Laboratories, Industrial Technology Research Institute, No. 195, Sec. 4, Chung Hsing Rd., Chutung, Hsinchu 310, Taiwan
b Department of Electrical Engineering and Computer Sciences, University of California, 571 Cory Hall, Berkeley, CA 94720-1770, USA |
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| Abstract: | We study the fabrication of poly(3-hexylthiophene)—P3HT and [6,6]-phenyl-C61 butyric acid methyl ester—PCBM based polymer bulk heterojunction photovoltaic cells using rotogravure printing. By studying the dependencies of device performance on material and process parameters including contact angles, ink concentrations, ink viscosities, solvent characteristics, and gravure printing parameters, optimized hole transport layers [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)—PEDOT:PSS] and active layers (P3HT:PCBM) are printed, resulting in devices with power conversion efficiencies as high as 1.68% under AM 1.5 G and a spectrally matched intensity of 100 mW/cm2. |
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| Keywords: | Rotogravure printing Polymer photovoltaic cells Bulk heterojunction |
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