One-dimensional ZnO nanostructures: Solution growth and functional properties

Xu, Sheng; Wang, Zhong Lin

doi:10.1007/s12274-011-0160-7

Cited by 1,239 publications

(942 citation statements)

References 569 publications

Supporting

Mentioning

914

Contrasting

Unclassified

Order By: Relevance

“…Among these methods, the hydrothermal method has several advantages such as; they can be processed at a low temperature (<100°C), cheap, environmentfriendly and give a high yield of ZnO NSs on substrates. One dimension (1D) ZnO (NRs) are highly important compared to other ZnO NSs because of the simple synthesis and the higher surface areas to volume ratio that enhance the fabrication of electronic, optoelectronic and biomedical devices [40,41]. By using the hydrothermal methods, ZnO NRs can easily be grown on a broad range of substrates that include paper, glass, metal, and other semiconductors [42,43].…”

Section: Metal Oxide Semiconductor Nanostructuresmentioning

confidence: 99%

Synthesising Metal Oxide Materials and Their Composite Nanostructures for Sensing and Optoelectronic Device Applications

Khun¹

2015

Linköping Studies in Science and Technology. Dissertations

View full text Add to dashboard Cite

Research on nanomaterials has been revolutionized in the last few years because of the attractive properties they have in comparison to the bulk phase of similar materials. These properties are physical, chemical, catalytic and optical. Among these nanomaterials, the metal oxide nanostructures have become of particular interest to scientists for the development of different optical, biochemical and biomedical nanodevices. In the present research work using the advantageous features of nanotechnology, high performance nanodevices for optoelectronics with a wide band gap compound nanostructure and highly sensitive sensor devices have been demonstrated. The nanotechnology is used to fabricate sensitive and precise nanodevices based on nanomaterials for the application of sensing.Among metal oxide nanostructures, ZnO, CuO and NiO are attractive materials because of their unique properties; their high surface area to volume ratio, their energy band gap of 3.37 eV, 1.2 eV and 3.7 eV, respectively, biocompatibility, high electron mobility, fast electron transfer rate and they are environmental-friendly in many applications. When used in sensor devices, nanomaterials have indicated high selectivity for possible use to detect the various analytes even in small volumes. Metal oxide nanostructures have shown to be good for optoelectronic nanodevices because of their electrical characteristics, high optical absorption and low-processing temperature.In this thesis, the synthesis of different morphologies of metal oxide semiconductor nanostructures and their composite using the hydrothermal method are demonstrated for various applications. This thesis is divided into three parts:In the first part of this research work, the fabrication of well-aligned ZnO nanorods using different concentrations of composite seed layer of inorganic and organic materials when using the hydrothermal growth method is presented. The effect of the composite seed layer on the i Abstract alignment, density and optical properties of the grown ZnO nanorods is investigated (paper I).Utilizing the advantage of ZnO nanostructure, a comparative study of ZnO nanorods and thin films for chemical and biosensing application was carried out. The ZnO nanorods and thin films were functionalized with strontium ionophore membrane, immobilized the galactose oxidase and lactate oxidase for determining the strontium ions, D-galactose and L-lactic acid, respectively (paper II).In the second part, the effects of different urea concentrations on the morphology of CuO nanostructures is studied as described in paper III. Moreover, CuO nanoflowers were functionalized with cadmium ion ionophore for the detection of Cd ions, while CuO nanosheets were grown by the low temperature growth method and were used for the development of a nonenzymatic glucose sensor, respectively (Paper IV).In the last part of this thesis, composite nanostructures of CuO/ZnO and NiO/ZnO were applied to develop dopamine sensor and fast sensitive UV photodetector, respectively. A nanohybrid of C...

show abstract

Section: Metal Oxide Semiconductor Nanostructuresmentioning

confidence: 99%

Synthesising Metal Oxide Materials and Their Composite Nanostructures for Sensing and Optoelectronic Device Applications

Khun¹

2015

Linköping Studies in Science and Technology. Dissertations

View full text Add to dashboard Cite

show abstract

“…The development and investigation of ZnO nanostructures for optoelectronic applications is extensive and well-documented, showcasing a variety of morphologies achievable across a wide range of deposition techniques [1][2][3][4][5][6][7][8][9] . Of particular interest for device applications is the growth of ZnO nanorod arrays (NRAs) from low temperature, aqueous deposition techniques [10] which, over the past decade, has seen morphological improvements in alignment and uniformity through the introduction of precursor ZnO seed layers [11] , pH control of the growth environment [12,13] , additive incorporation [14] , as well as manipulation of growth variables including duration and temperature [15][16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

ZnO Nanorod Arrays as Electron Injection Layers for Efficient Organic Light Emitting Diodes

Faria

Campbell

McLachlan

2015

Adv Funct Materials

View full text Add to dashboard Cite

Nanostructured oxide arrays have received significant attention as charge injection and collection electrodes in numerous optoelectronic devices. Zinc oxide (ZnO) nanorods have received particular interest owing to the ease of fabrication using scalable, solution processes with a high degree of control of rod dimension and density. Here we implement vertical ZnO nanorods as electron injection layers in organic light emitting diodes (OLEDs) for display and lighting purposes. Implementing our nanorods into devices with an emissive polymer, poly(9,9-dioctyluorene-altbenzothiadiazole) (F8BT) and poly(9,9-di-n-octylfluorene-alt-N-(4-butylphenyl)dipheny-lamine) (TFB) as an electron blocking layer, brightness and efficiencies up to 8600 cd/m 2 and 1.66 cd/A were achieved. We highlight simple solution processing methodologies combined with post-deposition thermal processing to achieve complete wetting of the nanorod arrays with the emissive polymer. The introduction of TFB to minimize charge leakage and non-radiative exciton decay results in dramatic increases to device yields and provides an insight into the operating mechanism of these devices. We demonstrate the detected emission originates from within the polymer layers with no evidence of ZnO band-2 edge or defect emission. The work represents a significant development for the ongoing implementation of ZnO nanorod arrays into efficient light emitting devices.

show abstract

“…18 The family of nanoscale zinc oxide (ZnO) structures, including ZnO nanorods/nanowires, [19][20][21][22] nanotubes, 23 nanobelts 24 and nanodots, 25 has stimulated huge interest over the last decade. [26][27][28] ZnO NDs have attracted particular attention, given their size and possible quantum confinement effects, and have shown performance in light emission devices 29,30 and in cell labeling. 31 Silicon oxide (SiO 2 ) has been employed as a shield, with the aim of improving the optical properties and stability of ZnO nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Arrays of nanorods composed of ZnO nanodots exhibiting enhanced UV emission and stability

Yin

Sun

et al. 2014

Nanoscale

View full text Add to dashboard Cite

show abstract

One-dimensional ZnO nanostructures: Solution growth and functional properties

Cited by 1,239 publications

References 569 publications

Synthesising Metal Oxide Materials and Their Composite Nanostructures for Sensing and Optoelectronic Device Applications

Synthesising Metal Oxide Materials and Their Composite Nanostructures for Sensing and Optoelectronic Device Applications

ZnO Nanorod Arrays as Electron Injection Layers for Efficient Organic Light Emitting Diodes

Arrays of nanorods composed of ZnO nanodots exhibiting enhanced UV emission and stability

Contact Info

Product

Resources

About