916
(Invited) Scalable Fabrication of Moisture Resistant Perovksite Solar Cells
In this work, a novel concept of protecting the perovskite using a highly conductive composite of a layered material and a hole transporting polymer is presented.1 The excellent charge transport properties of the composite coating allow the use of thick coating on the perovskite, creating extremely high length scales for moisture diffusion through composite. The composite coating developed in our work, could be extended to lead-free organometallic perovskites that are both moisture and oxygen sensitive. In addition, we also present our results on our lamination approach for scalable assembly perovskite electrodes.2 The deposition of gold as a counter electrode for the lab scale perovskite cells is usually performed by thermal evaporation in a bell jar evaporator. This process is time consuming, energy intensive and not viable to scale up. Our approach involving lamination of individual electrodes, enables a much facile low cost process for fabricating perovskite solar cells.
Our results and observation on polymer composites as protective coatings for perovskite and on laminating electrodes show high promise for the scalability and low cost fabrication of perovskite cells under atmospheric conditions (60 -70 % relative humidity).
References
- Rajamanickam, N., Vendra, V.K., Kumari, S., Lavery, B.W., Ramachandran, K., Druffel, T., Sunkara, M.K. Moisture resistant methyl ammonium lead iodide perovskite solar cells. Submitted 2014.
- Vendra, V.K., Kumari, S., Lavery, B.W., Rajamanickam, N., Druffel, T., Sunkara, M.K. Atmospheric roll to roll processing in perovskite solar cells. Submitted 2014