elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

An investigation of the wetting behavior of heat-treated silicon nitride particles with liquid silicon

Yasseri, Mohammad and Jauß, Thomas and Sorgenfrei, Tina and Cröll, Arne (2019) An investigation of the wetting behavior of heat-treated silicon nitride particles with liquid silicon. Journal of Crystal Growth. Elsevier. DOI: 10.1016/j.jcrysgro.2019.03.013 ISSN 0022-0248

[img] PDF - Registered users only until March 2021 - Preprint version (submitted draft)
1MB

Abstract

Silicon nitride is commonly used as a coating material for the silica crucibles utilized for the growth of multicrystalline silicon by directional solidification. The coating material might introduce impurities into the silicon melt during the growth. To investigate the wetting and incorporation behavior of the silicon nitride particles, silicon nitride particles were put intentionally into silicon rods, which were then grown by the float zone technique. To ensure that the particles stay within the melt and are not pushed out of the molten zone, the particles must show good wetting. Superheating the silicon nitride powders up to 105 K over the melting point of silicon was a successful approach to ensure wetting and thus to investigate the incorporation behavior of the silicon nitride in photovoltaic silicon. The heat treated silicon nitride particles stayed within the melt zone during the float zone experiments and the distribution behavior of the particles could be studied. Incidentally, the results imply that to suppress incorporation of silicon nitride particles (as coating material) into molten silicon during directional solidification, superheating the melt must be avoided.

Item URL in elib:https://elib.dlr.de/130551/
Document Type:Article
Title:An investigation of the wetting behavior of heat-treated silicon nitride particles with liquid silicon
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Yasseri, MohammadGerman aerospace center, Institute of materials research, Köln, Germany and University of Freiburg, Crystallography, Hermann-Herder-Straße 5, 79104 Freiburg, GermanyUNSPECIFIED
Jauß, ThomasUniversity of Freiburg, Crystallography, Hermann-Herder-Straße 5, 79104 Freiburg, GermanyUNSPECIFIED
Sorgenfrei, TinaUniversity of Freiburg, Crystallography, Hermann-Herder-Straße 5, 79104 Freiburg, GermanyUNSPECIFIED
Cröll, ArneUniversity of Freiburg, Crystallography, Hermann-Herder-Straße 5, 79104 Freiburg, Germany and RSESC, University of Alabama in Huntsville, 301 Sparkman Dr., Huntsville, AL 35899, USAUNSPECIFIED
Date:16 March 2019
Journal or Publication Title:Journal of Crystal Growth
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.jcrysgro.2019.03.013
Publisher:Elsevier
ISSN:0022-0248
Status:Published
Keywords:Wetting behavior; particle engulfment; silicon nitride coating; multicrystalline silicon; floating zone technique; solar cells
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Thermal Energy Storage
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Thermochemical Processes (Storage)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Thermoelectric Materials and Systems
Deposited By: Yasseri, Mohammad
Deposited On:14 Nov 2019 17:38
Last Modified:17 Feb 2020 12:12

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.