I make three layer solar cell (TiO2-SiO2-TiO2/SiO2) with doctor blade method but SiO2 layer broke all layer when it dry.
I have add some adhessive like PVA, CMC, or sodium silicate but the result still bad
Dear Dinar Rachmadika Baharintasari ,
- You have to keep the layers as thin as possible.
- You have to deposit them one after the other in the sense that
After forming a layer you must dry it by slowly heating up it and cooling it down.
This will help much and prevent the cracks in the layers.
Best wishes
Dear all, please check the following documents. My Regards
https://www.researchgate.net/publication/256854940_Design_preparation_and_durability_of_TiO2SiO2_and_ZrO2SiO2_double-layer_antireflective_coatings_in_crystalline_silicon_solar_modules
https://www.researchgate.net/publication/257375919_Sol-gel_preparation_of_SiO2TiO2SiO2-TiO2_broadband_antireflective_coating_for_solar_cell_cover_glass
https://doi.org/10.1039/D0NJ01402H
https://doi.org/10.1155/2014/670438
I could be wrong, but I suspect your deposited SiO2 layer actually is a SiO2.n(H2O) porous one. When dried, its volume tends to shrink, with pore collapse, which causes both an internal stress (plastically resolved by fracture) and also stresses the underlying and on-top layers.
Possibly, your deposition method is not the best choice, or you may try adding annealing steps before and after the SiO2 deposition (that is, before depositing the top Titania layer)
Okay you have mentioned the method, I didn't notice.. Apology.. I have experience in oxidation furnace and PECVD.. I guess I won't be able to assist you..
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