Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/17390
Title: Synthesis, characterization and thermoelectric performance of Mg2 (Si, Sn, Ge) materials using Si-kerf waste from photovoltaic technology
Authors: Mesaritis, G. 
Symeou, Elli 
Delimitis, Andreas 
Constantinou, Marios 
Constantinides, Georgios 
Jaegle, Martin 
Tarantik, Karina R. 
Kyratsi, Th 
Major Field of Science: Engineering and Technology
Field Category: Materials Engineering
Keywords: Magnesium silicides;Thermoelectric figure of merit;Recycling;Silicon;Multiphase;Mechanical/structural properties
Issue Date: 15-Jun-2020
Source: Journal of Alloys and Compounds, 2020, vol. 826, articl. no. 153933
Volume: 826
Journal: Journal of Alloys and Compounds 
Abstract: The recycling acquisition of silicon waste from photovoltaic industry has gained an increasing attention nowadays, since more than 50% of high purity material ends up as kerf during the wafer cutting process. Currently, different Si-based applications are being exploited in terms of using such Si kerf, in order to lower cost and significantly increase environmental impact. Thermoelectric devices can efficiently contribute towards this recycling approach, via the preparation of highly efficient silicides for power generation. In this work, Bi doped Mg2(Si,Sn,Ge) materials were prepared using Si-kerf originated from photovoltaic (PV) cutting wastes. Different Bi concentrations were studied in terms of thermoelectric properties and performance and a high figure-of-merit of 1.1. was achieved at 800K. In addition, a thorough structural and mechanical property characterization, such as morphology, phase identification, hardness and indentation modulus has been conducted. These results, which were evaluated and compared to materials prepared with pure Si (>99.9%), are presented for the first time for Mg2(Si,Sn,Ge) materials.
URI: https://hdl.handle.net/20.500.14279/17390
ISSN: 09258388
DOI: 10.1016/j.jallcom.2020.153933
Rights: © Elsevier
Type: Article
Affiliation : Cyprus University of Technology 
University of Cyprus 
Fraunhofer Institute for Physical Measurement Techniques 
Publication Type: Peer Reviewed
Appears in Collections:Άρθρα/Articles

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