Numerical investigation of the interfacial characteristics during Bridgman growth of compound crystals |
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| Affiliation: | 1. FEMTO-ST Institute (UMR CNRS 6174)—UFC/ENSMM, AS2M Department, 24 Rue Alain Savary, 25000 Besancon, France;2. Valahia University of Targoviste, FIE/ICSTM, B-dul Unirii 18-20, 130082 Targoviste, Romania;3. Université de Lyon, CNRS UMR5513, Ecole Nationale d’Ingénieurs de Saint-Etienne (ENISE), Laboratoire de Tribologie et Dynamique des Systèmes (LTDS), 58 Rue Jean Parot, 42023 Saint-Etienne Cedex 2, France;1. Department of Metallurgy, Chair of Simulation and Modeling of Metallurgical Processes, University of Leoben, 8700 Leoben, Austria;2. Christian Doppler Laboratory for Multiphase Simulation of Metallurgical Processes, 8700 Leoben, Austria;3. Material Center Leoben, 8700 Leoben, Austria;4. Reasearch Institute for Solid State Physics and Optics, 1121 Budapest, Hungary;1. University of Carthage, Institut National des Sciences Appliquées et de Technologie (INSAT), Laboratoire de Recherche Matériaux, Mesures et Applications, B.P. 676, 1080 Tunis Cedex, Tunisia;2. CEA, LITEN, Department of Solar Technologies, National Institute of Solar Energy, F-73375 Le Bourget du Lac, France;3. Laboratoire de Mécanique des Fluides et d’Acoustique, CNRS/Université de Lyon, École Centrale de Lyon/Université Lyon 1/INSA de Lyon, ECL, 36 Avenue Guy de Collongue, 69134 Ecully Cedex, France;4. Institut de Mécanique des Fluides de Toulouse, UMR CNRS/INP/UPS 5502, UFR MIG, Université Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex, France;1. School of Materials Science and Engineering, Nanjing Tech University, Nanjing, Jiangsu 21009, China;2. Yangzhou JA Solar Technology Co., Ltd., Yangzhou, Jiangsu 225000, China;3. Donghai JA Solar Technology Co., Ltd., Lianyungang, Jiangsu 222300, China |
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| Abstract: | The effects of the Bridgman process parameters and the double diffusive convection in the melt on the melt/solid interface shape and the solute distribution were numerically investigated for the II–VI semiconductor material HgCdTe. The results show that the melt/solid interface is concave at the center and the solute concentration at the interface is not uniform. A clockwise eddy forms near the interface in the melt when double diffusive convection is considered. With this eddy flow, the solute near the interface is well mixed so the solute distribution at the interface is very different from the case of no flow, but there are no significant changes in the interface shape or the thermal field. However, the growth parameters such as Bi, St, U and A significantly affect the melt/solid interface shape, position and the solute distribution at the interface. |
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