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Effects of Particle Size and Substrate Surface Properties on Deposition Dynamics of Inkjet-Printed Colloidal Drops for Printable Photovoltaics Fabrication
Journal article   Peer reviewed

Effects of Particle Size and Substrate Surface Properties on Deposition Dynamics of Inkjet-Printed Colloidal Drops for Printable Photovoltaics Fabrication

S. Biswas, S. Gawande, V. Bromberg and Y. Sun
Journal of solar energy engineering, v 132(2), pp 021010/1-021010/7
01 May 2010

Abstract

Energy & Fuels Engineering Engineering, Mechanical Science & Technology Technology
Using fluorescence microscopy, the inkjet deposition dynamics of monodispersed polystyrene particles in the size range of 0.02-1.1 mu m have been studied on glass, Ar plasma cleaned glass, and PDMS coated glass substrates. The results show that the substrate properties play an important role in determining the final dried patterns formed by the colloidal particles. Our observations also reveal that particle size and contact angle formed by the solvent in the dispersion determine how close to the contact line the particles can be deposited. It is found that smaller particles can move closer to the deposited contact line than particles with bigger sizes. This study can serve as a realistic experimental model system for a number of fundamental queries on how the final deposition microstructure depends on the ink formulation and substrate properties. The knowledge obtained here can be explored further to optimize process parameters for the fabrication of hybrid solar cells with improved morphology and device properties. [DOI: 10.1115/1.4001470]

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Collaboration types
Domestic collaboration
Web of Science research areas
Energy & Fuels
Engineering, Mechanical
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