کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1330281 1500122 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low-temperature phase transition of ZnS: The critical role of ZnO
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Low-temperature phase transition of ZnS: The critical role of ZnO
چکیده انگلیسی

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.

By controlling pH of the precursor, wurtzite ZnS particles can be generated at ∼350 °C. The ZnO-template mechanism was proposed and discussed.Figure optionsDownload as PowerPoint slideHighlights
► Wurtzite ZnS particles were prepared by using simple wet chemistry.
► pH of the precursor solution was adjusted to decrease the phase transition temperature of ZnS.
► ZnO-template-inducing mechanism of ZnS phase transition was proposed and discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 194, October 2012, Pages 282–285
نویسندگان
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