WANG Li-juan, ZHANG Wei, QIN Hai-tao, CHEN Jin-xing, LI Jia-ming, LI Ye, SONG Gui-cai, ZHANG Long. Influence of Solution-Processed Conditions on Polymer Bulk Heterojunction Solar Cell Performance[J]. , 2013,28(4): 521-526
WANG Li-juan, ZHANG Wei, QIN Hai-tao, CHEN Jin-xing, LI Jia-ming, LI Ye, SONG Gui-cai, ZHANG Long. Influence of Solution-Processed Conditions on Polymer Bulk Heterojunction Solar Cell Performance[J]. , 2013,28(4): 521-526 DOI: 10.3788/YJYXS20132804.0521.
Influence of Solution-Processed Conditions on Polymer Bulk Heterojunction Solar Cell Performance
The organic solar cells have been extensively studied due to low fabricated cost
easy processability and compatibility with flexible substrates. The bulk heterojunction solar cells based on poly(3-hexylthiophene) (P3HT) and-phenyl-C
61
-butyric acid methyl ester (PCBM) blends has been prepared with the solution-processed method. Influence of processing conditions on the performance of P3HT:PCBM solar cells were investigated under ambient atmosphere
such as heated-up time of P3HT:PCBM solution on water bath
P3HT: PCBM weight percent
spin-coating speed
and solvent annealing of P3HT:PCBM thin film. P3HT:PCBM solar cells with open circuit voltage of 0.62 V
short circuit current density of 14.97 mA/cm
2
fill factor of 42.21% and an efficiency of 3.92% were obtained by using the optimum condition. This improvement in the efficiency is possibly due to the homogeneous mixture and higher ordering P3HT:PCBM thin films
which enhanced carrier carrying ability as well as enlarged contact area of the polymer molecules rearrangement. The efficiency of the organic polymer bulk heterojunction solar cells was also improved. The good fabricated environment under ambient atmosphere was benefit to their commercialization.
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