Dear all
I had prepared almost specular mixed perovskite layers and they looked good even after HTL(spiro) deposition.... but after Au deposition the result was amasing......the colour of cells was changed...I mean, the colours have gone to be fade!!!! ( time between HTL and Au deposition was about 17 hours). What might have happened?
looking your advices.......
Gold deposition taken at high vacuum and confirm your deposition rate.Deposition rate should be slow.For further details please read following article.
During thermal evaporation , the high energy gold nanoparticles might have penetrated the perobskite layer. Initially, Deposite the gold film at minimum power i.e. at very low deposition rate. After 10 nm film , increase the deposition rate.
Is your gold layer a continuous layer covering the HTL underneath?
How do you see the color of the HTL after Au deposition. After Au deposition with sufficient thickness covering the whole cell area!
However if the color of the htl changed after Au deposition, it may the heating effect of Au deposition process. What is it?
Best wishes
- Badges
- Science topic
- Similar topics
- Engineering
- Materials Engineering
- Coating