Interplay of Zn(OAc)2 concentration, morphology, and emission in hydrothermal-grown ZnO nanostructures

Autor:	Horace Andrew Husay, Toshihiko Shimizu, Kohei Yamanoi, Elmer Estacio, Armando Somintac, Erick John Carlo D. Solibet, Christopher Jude T. Vergara, Nobuhiko Sarukura, Arnel Salvador, Raymund Curioso Veloz, Maria Cecilia Angub, Melvin John F. Empizo
Rok vydání:	2021
Předmět:	Nanostructure Materials science chemistry.chemical_element Zinc Crystal structure Condensed Matter Physics medicine.disease_cause Hydrothermal circulation Inorganic Chemistry Chemical engineering Nanocrystal chemistry Materials Chemistry medicine Nanorod Ultraviolet Wurtzite crystal structure
Zdroj:	Journal of Crystal Growth. 575:126339
ISSN:	0022-0248
DOI:	10.1016/j.jcrysgro.2021.126339
Popis:	We report the interplay of zinc acetate [Zn(CH3COO)2, Zn(OAc)2] concentration, morphology, and emission in hydrothermal-grown ZnO nanostructures. Highly oriented nanorods with intense, 54 to 96 ps near-band-edge ultraviolet (UV) emissions are successfully fabricated using 25 to 75 mM concentrations. On the other hand, larger and randomly oriented nanocrystals are fabricated using 100 to 150 mM concentrations. Although all nanostructures exhibit hexagonal wurtzite crystal structures, increasing the Zn(OAc)2 concentration affects their preferential orientation, morphology, and UV emission. The peculiar nanostructure emissions observed are also attributed to a reabsorption phenomenon among adjacent nanostructures. For potential scintillator applications, particularly for x-ray diagnostics, our results suggest that less than 100 mM Zn(OAc)2 concentrations should be used to reduce the UV emission reabsorption in hydrothermal-grown ZnO nanostructures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fa6e523807d38fc1ca29f9069282a082 https://doi.org/10.1016/j.jcrysgro.2021.126339 Zobrazit plný text záznamu Full Text from ScienceDirect