Low-temperature phase transition of ZnS: The critical role of ZnO

Po Chang Lin; Chi Chung Hua; Tai Chou Lee

doi:10.1016/j.jssc.2012.05.017

Low-temperature phase transition of ZnS: The critical role of ZnO

Po Chang Lin, Chi Chung Hua, Tai Chou Lee

Department of Chemical and Materials Engineering

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Wurtzite zinc sulfide (WZ-ZnS) is a valuable wide-band-gap semiconductor. However, it is difficult to synthesize due to its high transition temperature (1020 °C). This study investigates the formation of WZ-ZnS particles using a ZnO template. Various phase structures of ZnS with the same size but different levels of ZnO content are generated during the annealing process. The transition temperature can be lowered significantly to below 350 °C. Furthermore, when the powders of ZnO and zinc-blende ZnS are mixed, large ZnS particles are not induced by ZnO to transform into WZ-ZnS. The results strongly suggest that grain size is an essential but not sufficient factor in the formation of WZ-ZnS at lower temperatures.

Original language	English
Pages (from-to)	282-285
Number of pages	4
Journal	Journal of Solid State Chemistry
Volume	194
DOIs	https://doi.org/10.1016/j.jssc.2012.05.017
State	Published - Oct 2012

Keywords

Heterostructure
Hexagonal ZnS
Nanoparticle
Phase transformation
Thermodynamic stability
Wurtzite ZnS

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10.1016/j.jssc.2012.05.017

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title = "Low-temperature phase transition of ZnS: The critical role of ZnO",

abstract = "Wurtzite zinc sulfide (WZ-ZnS) is a valuable wide-band-gap semiconductor. However, it is difficult to synthesize due to its high transition temperature (1020 °C). This study investigates the formation of WZ-ZnS particles using a ZnO template. Various phase structures of ZnS with the same size but different levels of ZnO content are generated during the annealing process. The transition temperature can be lowered significantly to below 350 °C. Furthermore, when the powders of ZnO and zinc-blende ZnS are mixed, large ZnS particles are not induced by ZnO to transform into WZ-ZnS. The results strongly suggest that grain size is an essential but not sufficient factor in the formation of WZ-ZnS at lower temperatures.",

keywords = "Heterostructure, Hexagonal ZnS, Nanoparticle, Phase transformation, Thermodynamic stability, Wurtzite ZnS",

author = "Lin, {Po Chang} and Hua, {Chi Chung} and Lee, {Tai Chou}",

note = "Funding Information: This study was supported by the National Science Council of Taiwan under grant NSC 98–2221-E-194-032 . ",

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T1 - Low-temperature phase transition of ZnS

T2 - The critical role of ZnO

AU - Lin, Po Chang

AU - Hua, Chi Chung

AU - Lee, Tai Chou

N1 - Funding Information: This study was supported by the National Science Council of Taiwan under grant NSC 98–2221-E-194-032 .

PY - 2012/10

Y1 - 2012/10

N2 - Wurtzite zinc sulfide (WZ-ZnS) is a valuable wide-band-gap semiconductor. However, it is difficult to synthesize due to its high transition temperature (1020 °C). This study investigates the formation of WZ-ZnS particles using a ZnO template. Various phase structures of ZnS with the same size but different levels of ZnO content are generated during the annealing process. The transition temperature can be lowered significantly to below 350 °C. Furthermore, when the powders of ZnO and zinc-blende ZnS are mixed, large ZnS particles are not induced by ZnO to transform into WZ-ZnS. The results strongly suggest that grain size is an essential but not sufficient factor in the formation of WZ-ZnS at lower temperatures.

AB - Wurtzite zinc sulfide (WZ-ZnS) is a valuable wide-band-gap semiconductor. However, it is difficult to synthesize due to its high transition temperature (1020 °C). This study investigates the formation of WZ-ZnS particles using a ZnO template. Various phase structures of ZnS with the same size but different levels of ZnO content are generated during the annealing process. The transition temperature can be lowered significantly to below 350 °C. Furthermore, when the powders of ZnO and zinc-blende ZnS are mixed, large ZnS particles are not induced by ZnO to transform into WZ-ZnS. The results strongly suggest that grain size is an essential but not sufficient factor in the formation of WZ-ZnS at lower temperatures.

KW - Heterostructure

KW - Hexagonal ZnS

KW - Nanoparticle

KW - Phase transformation

KW - Thermodynamic stability

KW - Wurtzite ZnS

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SN - 0022-4596

VL - 194

SP - 282

EP - 285

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

ER -

Low-temperature phase transition of ZnS: The critical role of ZnO

Abstract

Keywords

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