Photoluminescent properties of ZnO nanoparticles in ultraviolet opal infiltrated by chemical deposition

Kim, T.W.; Abrarov, S. M.; Yuldashev, Sh. U.; Kwon, Younghae; Kang, Tae Won

doi:10.1016/j.jcrysgro.2005.09.041

Cited by 5 publications

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a II-VI semiconductor, ZnO is widely used in many optical and optoelectronic devices such as solar cells [2], luminescent [3], electrical and chemical sensors [4], and varistors [5]. Among the different methods of synthesis of ZnO nanostructures such as chemical vapor phase [6], hydrothermal [7], sol-gel [8], co-precipitate [4], sonochemical [9], DC thermal plasma [10], and hydrolization [11], the electrooxidation method is one of the best growth methods; because this technique generates nanoparticles in the variety of size and structures [12].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO nanoparticles and flower-like nanostructures using nonsono- and sono-electrooxidation methods

2013

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO nanoparticles and flower-like nanostructures using nonsono- and sono-electrooxidation methods

2013

View full text Add to dashboard Cite

“…ZnO, a wide band-gap (3.37 eV) compound semiconductor with large exciton-binding energy (60 meV) at room temperature, is a very attractive material for use in many promising optoelectronic devices, such as light-emitting diodes, laser diodes, and solar cells [5][6][7][8][9][10][11]. Up to now, a variety of methods have been employed to fabricate ZnO nanorods, such as vapor phase transport deposition, hydrothermal method, sol-gel process, chemical vapor deposition and electrochemical deposition [12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

The effect of ZnO buffer layer on structural and optical properties of ZnO nanorods

Lang

Yang

et al. 2011

Cryst. Res. Technol.

View full text Add to dashboard Cite

A low-temperature synthetic route was used to prepare oriented arrays of ZnO nanorods on ITO conducting glass substrate coated with buffer layer of ZnO seeds in an aqueous solution. The corresponding growth behavior and optical properties of ZnO nanorod arrays were studied. It was found that the nature of the buffer layer had effect on the microstructures and optical properties of the resultant ZnO nanorod arrays. X-ray diffraction (XRD) results showed the nanorods were preferentially grown along (002) direction, but the diameter of the nanorods prepared with the buffer layer was much smaller than the without one, which can be clearly seen from the scanning electron microscopy (SEM) results. And it also found that the buffer layer was not only enhanced the density of overall coverage but also beneficial to grown the oriented arrays. Photoluminescence spectroscopy (PL) results indicated that the all the samples had the better optical behaviors. By computation, the relative PL intensity ratio of ultraviolet emission (I UV ) to deep level emission (I DLE ) of ZnO nanorods grown with the pure substrate was much higher than that of the sample with the buffer layer. The defects on the surface increased with the size reduction of nanorods caused by the buffer layer may be the main reason for it. And the small shift in the UV emission was caused by the rapid reduction in crystal size and compressive stress from Raman spectra results.

show abstract

“…Over the years, there has been a considerable interest in the novel optical properties of semiconductor nanoparticles and nanowires [170][171][172][173][174]. These nanostructures are…”

Section: Introductionmentioning

confidence: 99%

Laser processing of Ga2O3 micro and nanostructures

Lam¹

View full text Add to dashboard Cite

LIST OF FIGURES viii LIST OF TABLES xiii CHAPTER 1 Introduction 1 1.1 Nanotechnology 1 1.2 Crystal Structure of Ga 2 0 3 1.2.1 Gallium Oxide Bulk Crystal and Thin Film 1.2.2 Gallium Oxide Nanomaterials 1.3 Nanostructures and Quantum Mechanics in Reduced Dimensionality 1.4 Nanoparticle Synthesis 1.5 Nanowire Synthesis 1.5.1 Vapor-Liquid-Solid (VLS) Growth of Nanowires 1.6 Research Motivation 1.7 Research Objectives 20 1.8 Thesis Outline CHAPTER 2 Background and Literature Review 22 2.1 Pulsed Laser Ablation (PLA) 22 2.1.1 Laser-Material Interaction 23 2.1.2 Characteristics of the Plume 25 2.1.3 Plume in a Background Gas 25 2.2 Methods for the Synthesis of Nanowires 27 2.3 Critical VLS Growth Parameters 28 2.3.1 Alloying and Solubility of Materials with Catalyst 28 2.3.2 Catalyst Thickness and Size of Monodispersed Metal Nanoclusters 30 2.3.3 Temperature 30 2.3.4 Source-to Substrate Separation 32 ii ATTENTION: The Singapore Copyright Act applies to the use of this document. Nanyang Technological University Library 2.3.5 Substrate Orientation 33 2.3.6 Deposition Time 35 CHAPTER 3 Ga 2 0 3 Nanoparticles, Nanoclusters and 36 Nanowires: Synthesis and Characterization 3.1 Synthesis of Ga2C>3 Nanoparticles, Nanoclusters and Nanowires 36 3.1.

show abstract

Photoluminescent properties of ZnO nanoparticles in ultraviolet opal infiltrated by chemical deposition

Cited by 5 publications

References 37 publications

Synthesis of ZnO nanoparticles and flower-like nanostructures using nonsono- and sono-electrooxidation methods

Synthesis of ZnO nanoparticles and flower-like nanostructures using nonsono- and sono-electrooxidation methods

The effect of ZnO buffer layer on structural and optical properties of ZnO nanorods

Laser processing of Ga2O3 micro and nanostructures

Contact Info

Product

Resources

About