I have tried fabricating with the same spec (that gave best PCE of 3.67% for P3HT PCBM61 with 3% DIO) for P3HT ICBA61, but witnessed poor PCE of < 2.50 %. Awaiting for your kind advice/suggestions.
For P3HT:PCBM61, the blend film was slow dried followed by thermal annealing at 100C for 5 min.
In case of P3HT:ICBA60, the blend film was slow dried followed by thermal annealing at 150C for 10 min.
To note, both were fabricated in open-air atmosphere.
Kan Li, for both the cases, cells were fabricated in open-air atmosphere without any encapsulation. For P3HT:PCBM, PCE was relatively decent. (3.67%).
I followed the same spin speed for P3HT:ICBA61 with 3% DIO, but PCE wasnt good. Think that reduced PCE may be due to solubility issue with ICBA60 with DIO. Please suggest any solid additives for P3HT:ICBA60 bulk heterojunction for obtaining best PCE.
Dear Mr. Gopalan,
which kind of solar cell structure was used?
maybe you have some interface problems!
Dear Ivan and Kan Li, thanks for the comments. Since, I am fabricating in open-air atmosphere, i am coating a thin layer of ZnO, which I believe can act as an encapsulation layer protecting the active layer.
- Badges
- Science topic