Aerosol deposition (AD) is an efficient technique for customized coating of various substrates. The small particles of AD yield a dense coating layer with small voids. AD is amenable to rapid coating (mass production), thus, it is economically attractive. Low-temperature AD coating is desirable because it minimizes the thermal degradation of the substrate. An optimized low-cost AD coating technique is of significant interest to solar-cell engineers seeking to reduce manufacturing costs. While most previous studies ignore the importance of nozzle geometry on coating performance, this paper examines non-optimized nozzles and commensurate shockwaves using computational fluid dynamics (CFD). The optimized nozzle geometry obtained from CFD can rapidly prototype nozzles. The CFD-designed nozzles with optimized geometry yielded significantly improved coating quality over non-optimized nozzles.
Bibliographical noteFunding Information:
This work was supported by the New & Renewable Energy Program through a grant by the Korea Institute of Energy Technology Evaluation and Planning (KETEP , 2010–3010010011 ) and the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Knowledge Economy of Korea. This work was also supported by the Center for Inorganic Photovoltaic Materials ( NRF-2011-0007182 ), ( NRF-2010-D00013 ), and the Converging Research Center Program through the Ministry of Education, Science and Technology ( 2010K000969 ).
- Aerosol deposition
- Computational fluid dynamics
- Nozzle optimization
- Supersonic nozzle flow
ASJC Scopus subject areas
- Environmental Engineering
- Mechanical Engineering
- Fluid Flow and Transfer Processes
- Atmospheric Science