Electrical properties of individual ZnO nanowires

Sakurai, Minoru; Wang, Y G; Uemura, Tomomasa; Aono, Masakazu

doi:10.1088/0957-4484/20/15/155203

Cited by 52 publications

(35 citation statements)

References 17 publications

(21 reference statements)

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“…41 In this case, the end contacts of the nanowire serve as source and drain, and the number of carriers flowing through it can be manipulated by the gate voltage, V g , applied to the back of the substrate. The carrier density induced by the gate voltage can be studied and the mobility of electrons ( μ e ) in the nanowires calculated.…”

Section: Characterization Techniques Of Single Nanowiresmentioning

confidence: 99%

Review on measurement techniques of transport properties of nanowires

Rojo¹,

Caballero‐Calero²,

Lopeandía

et al. 2013

Nanoscale

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Section: Characterization Techniques Of Single Nanowiresmentioning

confidence: 99%

Review on measurement techniques of transport properties of nanowires

Rojo¹,

Caballero‐Calero²,

Lopeandía

et al. 2013

Nanoscale

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“…But it is difficult to measure the electrical properties of ZnO that is why lot of variation in the reported results has been found [50][51][52][53][54][55][56][57]. It is believed that current transport properties have been strongly affected by the concentration of intrinsic defects.…”

Section: Electrical Propertiesmentioning

confidence: 99%

Synthesis, Characterization and Applications of Metal Oxide Nanostructures

Hussain¹

2014

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The main objective of nanotechnology is to build self-powered nanosystems that are ultrasmall in size, exhibit super sensitivity, extraordinary multi functionality, and extremely low power consumption. As we all know that 21st century has brought two most important challenges for us. One is energy shortage and the other is global warming. Now to overcome these challenges, it is highly desirable to develop nanotechnology that harvests energy from the environment to fabricate self-power and low-carbon nanodevices. Therefore a self-power nanosystem that harvests its operating energy from the environment is an attractive proposition. This is also feasible for nanodevices owing to their extremely low power consumption. One advantageous approach towards harvesting energy from the environment is the utilization of semiconducting piezoelectric materials, which facilitate the conversion of mechanical energy into electrical energy. Among many piezoelectric materials ZnO has the rare attribute of possessing both piezoelectric and semiconducting properties. But most applications of ZnO utilize either the semiconducting or piezoelectric property, and now it’s time to fully employ the coupled semiconducting-piezoelectric properties to form the basis for electromechanically coupled nanodevices. Since wurtzite zinc oxide (ZnO) is structurally noncentral symmetric and has the highest piezoelectric tensor among tetrahedrally bonded semiconductors, therefore it becomes a promising candidate for energy harvesting applications. ZnO is relatively biosafe and biocompatible as well, so it can be used at large scale without any harm to the living environment. The synthesis of another transition metal oxide known as Co3O4 is also important due to its potential usage in the material science, physics and chemistry fields. Co3O4 has been studied extensively due to low cost, low toxicity, the most naturally abundant, high surface area, good redox, easily tunable surface and structural properties. These significant properties enable Co3O4 fruitful for developing variety of nanodevices. Co3O4 nanostructures have been focused considerably in the past decade due to their high electro-chemical performance, which is essential for developing highly sensitive sensor devices. I started my work with the synthesis of ZnO nanostructures with a focus to improve the amount of harvested energy by utilizing oxygen plasma treatment. Then I grow ZnO nanorods on different flexible substrates, in order to observe the effect of substrate on the amount of harvested energy. After that I worked on understanding the mechanism and causes of variation in the resulting output potential generated from ZnO nanorods. My next target belongs to an innovative approach in which AFM tip decorated with ZnO nanorods was utilized to improve the output energy. Then I investigated Co3O4 nanostructures though the effect of anions and utilized one of the nanostructure to develop a fast and reliable pH sensor. Finally to take the advantage of higher degree of redox chemistry of NiCo0O...

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“…This entails that these structures must possess good electrical properties, and that techniques of measuring and analyzing these must be studied thoroughly as well. Several studies have been done (Sakurai et al 2009, Schlenker et al 2007, Yoon et al 2009) on the assessment of ZnO micro and nanostructures' electrical properties grown using different fabrication techniques. In this work, ZnO micro and nanostructures grown via hydrothermal growth method are characterized with focus on their electrical properties.…”

Section: Introductionmentioning

confidence: 99%

Electrical properties of an individual ZnO micro/nanorod

2015

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Abstract-Free standing, highly crystalline ZnO micro/nanorods have been successfully fabricated using low temperature hydrothermal synthesis. Current-voltage characteristic curves show that ZnO micro/ nanorods' resistances are proportional to their geometrical ratios, satisfying classical Ohm's law. Temperature-dependent resistance measurements reveal exponential decay of current with temperature, implying good semiconducting properties. Finally, three different thermally-activated impurity levels were identified from the measurements, and these are attributed to Zn interstitials in the bulk. The results are important in supplementing research in nanoelectronics and nanocircuitries.

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Electrical properties of individual ZnO nanowires

Cited by 52 publications

References 17 publications

Review on measurement techniques of transport properties of nanowires

Review on measurement techniques of transport properties of nanowires

Synthesis, Characterization and Applications of Metal Oxide Nanostructures

Electrical properties of an individual ZnO micro/nanorod

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