Effect of Isopropyl Alcohol(IPA) on Tin oxide(SnO<SUB>2</SUB>) Nanoparticle(NP) Suspension and Dried film for Electron Transport Layer(ETL) of Solar Cell
발표자
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초록
내용
The roll-to-roll(R2R) process is widely adopted to produce large and low-priced flexible devices due to its productivity and scalability. To improve the performance of perovskite solar cells(PSCs), the uniform morphology of SnO2 NP(ETL) on a flexible substrate should be achieved to produce the PSC using a R2R process. Water/IPA solvent is widely used to improve the wettability between SnO2 NP suspension and substrate by controlling the surface tension and NP dispersion, so the effect of co-solvent(IPA) on the suspension should be investigated. In this study, we investigated the effect of co-solvent content on NP aggregations in a solution and surface properties in a dried film. In addition, we utilized the Brownian dynamics simulations to study the structure formation and deformation of NP during drying. The results reported in this presentation help to understand the dynamic behavior of attractive colloidal suspension and the morphology development of the ETL during drying.