Dense CdS thin films on fluorine-doped tin oxide coated glass by high-rate microreactor-assisted solution deposition

Title
Dense CdS thin films on fluorine-doped tin oxide coated glass by high-rate microreactor-assisted solution deposition
Author(s)
류시옥Yu-Wei Su[Yu-Wei Su]Sudhir Ramprasad[Sudhir Ramprasad]Seung-Yeol Han[Seung-Yeol Han]Wei Wang[Wei Wang]Daniel R. Palo[Daniel R. Palo]Brian K. Paul[Brian K. Paul]Chih-hung Chang[Chih-hung Chang]
Keywords
CHEMICAL BATH DEPOSITION; CONTINUOUS-FLOW MICROREACTOR; CDS/CDTE SOLAR-CELL; LAYERS; SUBSTRATE; GROWTH
Issue Date
201304
Publisher
ELSEVIER SCIENCE SA
Citation
THIN SOLID FILMS, v.532, pp.16 - 21
Abstract
Continuous microreactor-assisted solution deposition is demonstrated for the deposition of CdS thin films on fluorine-doped tin oxide (FTO) coated glass. The continuous flow system consists of a microscale T-junction micromixer with the co-axial water circulation heat exchanger to control the reacting chemical flux and optimize the heterogeneous surface reaction. Dense, high quality nanocrystallite CdS thin films were deposited at an average rate of 25.2 nm/min, which is significantly higher than the reported growth rate from typical batch chemical bath deposition process. Focused-ion-beam was used for transmission electron microscopy specimen preparation to characterize the interfacial microstructure of CdS and FTO layers. The band gap was determined at 2.44 eV by UV-vis absorption spectroscopy. X-ray photon spectroscopy shows the binding energies of Cd 3d(3/2), Cd 3d(5/2), S 2P(3/2) and S 2P(1/2) at 411.7 eV, 404.8 eV, 162.1 eV and 163.4 eV, respectively. (C) 2012 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/26023http://dx.doi.org/10.1016/j.tsf.2012.12.040
ISSN
0040-6090
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공과대학 > 화학공학부 > Articles
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