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Cadmium sulfide thin film deposition: A parametric study using microreactor-assisted chemical solution deposition

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dc.creator Ramprasad, Sudhir
dc.creator Su, Yu-Wei
dc.creator Chang, Chih-hung
dc.creator Paul, Brian K.
dc.creator Palo, Daniel R.
dc.date.accessioned 2012-10-31T21:54:14Z
dc.date.available 2012-10-31T21:54:14Z
dc.date.issued 2012-01
dc.identifier.citation Ramprasad, S., Su, Y., Chang, C., Paul, B., & Palo, D. (2012). Cadmium sulfide thin film deposition: A parametric study using microreactor-assisted chemical solution deposition. Solar Energy Materials and Solar Cells, 96(1), 77-85. doi: 10.1016/j.solmat.2011.09.015 en_US
dc.identifier.uri http://hdl.handle.net/1957/34718
dc.description This is the publisher’s final pdf. The published article is copyrighted by Elsevier and can be found at: www.elsevier.com/. en_US
dc.description.abstract Cadmium sulfide (CdS) thin films are commonly used as buffer layers in thin film solar cells and can be produced by a number of solution and vacuum methods. We report the continuous solution deposition of CdS on fluorine-doped tin oxide coated glass substrates using Microreactor-Assisted Solution Deposition (MASD (TM)). A flow system consisting of a microscale T-mixer and a novel adjustable residence time microchannel heat exchanger has been utilized in this study. The CdS thin film synthesis involves a multistage mechanism in which an undesirable homogeneous reaction competes with the desired heterogeneous reaction. A microchannel heat exchanger with an adjustable residence time unit has been developed to optimize the reaction residence time and favor heterogeneous growth. Optimization of CdS reaction solution residence time facilitates improved control of CdS synthesis by minimizing the homogeneous reaction and subsequently improving key parameters for process scale-up such as yield and selectivity. The present study indicates that a residence time range of 13-20 s at a solution temperature of 90 degrees C and deposition time of 3 min yields similar to 40 nm thick CdS film. The CdS films were characterized by UV-vis spectroscopy, SEM-EDS, TEM, and X-ray diffraction. Published by Elsevier B.V. en_US
dc.description.sponsorship Thework described herein was funded by the US Department of Energy,Industrial Technologies Program through Award#NT08847, under ContractDE-AC-05-RL01830toPNNL.Additional matching funds were received from the Oregon Nanoscience and Micro- technologies Institute(ONAMI)under a matching grant to Oregon State University. en_US
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Solar Energy Materials and Solar Cells en_US
dc.relation.ispartofseries Vol. 96 no. 1 en_US
dc.subject Continuous flow en_US
dc.subject Microchannel heat exchanger en_US
dc.subject Chemical bath deposition en_US
dc.subject CdS buffer layer en_US
dc.subject CdS window layer en_US
dc.subject Chemical solution deposition en_US
dc.title Cadmium sulfide thin film deposition: A parametric study using microreactor-assisted chemical solution deposition en_US
dc.type Article en_US
dc.description.peerreview yes en_US
dc.identifier.doi 10.1016/j.solmat.2011.09.015

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