Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/83393
Title: The improvement of thermoelectric property of bulk ZnO via ZnS addition : influence of intrinsic defects
Authors: Zhu, BeiBei
Li, Di
Zhang, TianShu
Luo, YuBo
Donelson, Richard
Zhang, Ting
Zheng, Yun
Du, ChengFeng
Wei, Lei
Hng, Huey Hoon
Keywords: DRNTU::Engineering::Materials
ZnO
Defects
Issue Date: 2018
Source: Zhu, B., Li, D., Zhang, T., Luo, Y., Donelson, R., Zhang, T., . . . Hng, H. H. (2018). The improvement of thermoelectric property of bulk ZnO via ZnS addition : influence of intrinsic defects. Ceramics International, 44(6), 6461-6465. doi:10.1016/j.ceramint.2018.01.043
Series/Report no.: Ceramics International
Abstract: As in any semiconducting solids, intrinsic defects can affect the properties of ZnO, such as the electrical and thermal conductivities. Defect engineering is usually focused on optimizing the materials’ synthesis or annealing parameters, i.e., temperature, atmosphere, etc. Here we report an approach to change the intrinsic defects of ZnO by adding a small amount of ZnS. During the sintering process, ZnS was decomposed. Apart from the formation of SO2, the decomposed S and Zn can also be simultaneously doped onto O and Zn sites to change the intrinsic defects in ZnO. For instance, some of the S was converted to SO2 and led to the formation of Vo (oxygen vacancy); meanwhile, Zn may move to the VZn (Zn vacancy) site and decrease the concentration of Zn vacancy. Due to the changes in these native defects, the carrier concentration increased and the thermal conductivity decreased when the content of ZnS was increased to x = 0.01. This sample had an optimal zT value, which was twice that of undoped ZnO. However, with further increase in ZnS, the carrier concentration was reduced. These results suggest a method to tune the intrinsic defects of ZnO via doping technology and bring potential opportunities to improve the thermoelectric performance of this oxide.
URI: https://hdl.handle.net/10356/83393
http://hdl.handle.net/10220/48155
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2018.01.043
Rights: © 2018 Elsevier Ltd and Techna Group S.r.l. (Published by Elsevier). All rights reserved. This paper was published by Elsevier in Ceramics International and is made available with permission of Elsevier Ltd and Techna Group S.r.l.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
MSE Journal Articles

Files in This Item:
File Description SizeFormat 
The improvement of thermoelectric property of bulk ZnO via ZnS addition-.pdf823.17 kBAdobe PDFThumbnail
View/Open

SCOPUSTM   
Citations

6
Updated on Jun 18, 2020

PublonsTM
Citations

7
Updated on Nov 22, 2020

Page view(s)

99
Updated on Nov 27, 2020

Download(s)

2
Updated on Nov 27, 2020

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.