title: Using mixed solvent and changing spin-coating parameters to increase the efficiency and lifetime of organic solar cells.
abstract: The derivative of C60, i.e., PCBM, and P3HT (3-hexylthiophene) were dissolved in chloroform:dichlorobenzene mixed solvent, then spin-coated as the active layer for organic solar cells (OSC). The experimental parameters were studied carefully to obtain the optimum power conversion efficiency (PCE), including the solvent mixing ratio, spin-coating speed, annealing conditions for the active layer, etc. The OSC devices were packaged with glass and a newly developed UV-glue to improve the lifetime and PCE. Dichlorobenzene solvent has great effect upon the PCE. Changing the spin-coating speed and increasing the number of steps increased the PCE apparently to 1.4%.
authors.affiliation: Institute of Electro-Optical and Materials Science, National Formosa University, Huwei, Yunlin 63208, Taiwan.
authors.forename: Yu Sheng
authors.initials: YS
authors.lastname: Tsai
authors.forename: Wei-Ping
authors.initials: WP
authors.lastname: Chu
authors.forename: Rong-Ming
authors.initials: RM
authors.lastname: Tang
authors.forename: Fuh-Shyang
authors.initials: FS
authors.lastname: Juang
authors.forename: Ming-Hua
authors.initials: MH
authors.lastname: Chang
authors.forename: Mark O
authors.initials: MO
authors.lastname: Liu
authors.forename: Tsung-Eong
authors.initials: TE
authors.lastname: Hsieh