Single-crystalline ZnO spherical particles by pulsed laser irradiation of colloidal nanoparticles for ultraviolet photodetection

H. Wang; A. Pyatenko; N. Koshizaki; H. Moehwald; D. Shchukin

doi:10.1021/am500443a

Single-crystalline ZnO spherical particles by pulsed laser irradiation of colloidal nanoparticles for ultraviolet photodetection

H. Wang, A. Pyatenko, N. Koshizaki, H. Moehwald, D. Shchukin

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

49 Scopus citations

Abstract

We report the formation and ultraviolet (UV) photodetection of single-crystalline spherical ZnO particles by pulsed laser irradiation of commercial ZnO nanoparticles in water. The phase and microstructure analysis before and after laser irradiation reveals a crystal size increase and shape transformation from irregular to spherical. Time-dependent laser irradiation confirmed that fusion is the reason for nanoparticle growth up to single-crystalline spherical particles. After rapid cooling, they maintain size and shape and possess unique optical and electrical properties. Because of the single-crystalline feature and smooth surfaces, high and selective sensing of ultraviolet light is observed.

Original language	English
Pages (from-to)	2241-2247
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	6
Issue number	4
DOIs	https://doi.org/10.1021/am500443a
State	Published - 26 Feb 2014
Externally published	Yes

Keywords

photodetection
pulsed laser irradiation
single crystalline
spherical particles
ZnO

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abstract = "We report the formation and ultraviolet (UV) photodetection of single-crystalline spherical ZnO particles by pulsed laser irradiation of commercial ZnO nanoparticles in water. The phase and microstructure analysis before and after laser irradiation reveals a crystal size increase and shape transformation from irregular to spherical. Time-dependent laser irradiation confirmed that fusion is the reason for nanoparticle growth up to single-crystalline spherical particles. After rapid cooling, they maintain size and shape and possess unique optical and electrical properties. Because of the single-crystalline feature and smooth surfaces, high and selective sensing of ultraviolet light is observed.",

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author = "H. Wang and A. Pyatenko and N. Koshizaki and H. Moehwald and D. Shchukin",

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AU - Wang, H.

AU - Pyatenko, A.

AU - Koshizaki, N.

AU - Moehwald, H.

AU - Shchukin, D.

PY - 2014/2/26

Y1 - 2014/2/26

N2 - We report the formation and ultraviolet (UV) photodetection of single-crystalline spherical ZnO particles by pulsed laser irradiation of commercial ZnO nanoparticles in water. The phase and microstructure analysis before and after laser irradiation reveals a crystal size increase and shape transformation from irregular to spherical. Time-dependent laser irradiation confirmed that fusion is the reason for nanoparticle growth up to single-crystalline spherical particles. After rapid cooling, they maintain size and shape and possess unique optical and electrical properties. Because of the single-crystalline feature and smooth surfaces, high and selective sensing of ultraviolet light is observed.

AB - We report the formation and ultraviolet (UV) photodetection of single-crystalline spherical ZnO particles by pulsed laser irradiation of commercial ZnO nanoparticles in water. The phase and microstructure analysis before and after laser irradiation reveals a crystal size increase and shape transformation from irregular to spherical. Time-dependent laser irradiation confirmed that fusion is the reason for nanoparticle growth up to single-crystalline spherical particles. After rapid cooling, they maintain size and shape and possess unique optical and electrical properties. Because of the single-crystalline feature and smooth surfaces, high and selective sensing of ultraviolet light is observed.

KW - photodetection

KW - pulsed laser irradiation

KW - single crystalline

KW - spherical particles

KW - ZnO

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DO - 10.1021/am500443a

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JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 4

ER -

Single-crystalline ZnO spherical particles by pulsed laser irradiation of colloidal nanoparticles for ultraviolet photodetection

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Keywords

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