CuO nanostructures prepared by a chemical method

Li, D.; Leung, Y. H.; Djurišić, Aleksandra B.; Liu, Z.T.; Xie, Maohai; Gao, Jie; Chan, Wai Kin

doi:10.1016/j.jcrysgro.2005.04.090

Cited by 76 publications

(41 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dielectric properties of materials are mainly determined by their abilities to polarize at a given frequency. For multi component systems, when free charge carriers migrate through the material, space charges build up at the interfaces of the components remaining to the mismatch of the conductivities and dielectric constants of the materials at the interfaces [26,27]. This is called interfacial polarization.…”

Section: Effect Of Cds Nanoparticles Addition On Different Electricalmentioning

confidence: 99%

Influence of cadmium sulfide nanoparticles on structural and electrical properties of polyvinyl alcohol films

Koteswararao¹,

Abhishek²,

Satyanarayana³

et al. 2016

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. Cadmium sulfide (CdS) nanoparticles have been synthesized by hydrothermal method and dispersed in poly vinyl alcohol (PVA) matrix in varying amounts by weight. Subsequently, PVA/CdS nanocomposites have been synthesized with the objective of investigating the effect of CdS nanoparticles on structural and electrical properties of PVA films. Structural properties were analyzed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. Differential scanning calorimetry (DSC) was used to investigate thermal properties of PVA/CdS nanocomposites. Electrical properties were measured by using high frequency LCR meter and were found to be strongly dependent on frequency and nano CdS content. Dielectric constant decreased with increase in frequency and with increase in nanofiller concentration. AC conductivity and dielectric loss increased with frequency and decreased with increase in nano CdS content.

show abstract

Section: Effect Of Cds Nanoparticles Addition On Different Electricalmentioning

confidence: 99%

Influence of cadmium sulfide nanoparticles on structural and electrical properties of polyvinyl alcohol films

Koteswararao¹,

Abhishek²,

Satyanarayana³

et al. 2016

Express Polym. Lett.

View full text Add to dashboard Cite

show abstract

“…Various methods have been employed for the fabrication of CuO NSs [8,1921]. However, the CuO NSs grown through thermal oxidation process or synthesized through wet chemical routes demonstrated poor adhesion to substrates like glass [22]. Therefore selection of synthesis method is also very important.…”

Section: Introductionmentioning

confidence: 99%

Effect of Post Growth Annealing on the Structural and Electrical Properties of ZnO/CuO Composite Nanostructures

et al. 2014

View full text Add to dashboard Cite

In the present work, ZnO/CuO composite nanostructures have been grown on uorine doped tin oxide coated glass substrate by aqueous chemical growth method. To observe the eect of post growth annealing (500 • C, 1 min) on the structural properties of ZnO nanorods scanning electron microscope and X-ray diraction techniques have been utilized. SEM images of post growth annealed (post growth annealed) sample reveal that the average diameter of ZnO NRs has considerably increased in comparison with as grown sample. Moreover after post growth annealing the ZnO NRs showed more clearly hexagonal wurtzite structure. Beside this the NRs are also uniform and well aligned with a high aspect ratio of ∼10. In XRD pattern the strongly intense (002) peak of the post growth annealing sample suggest that the crystal quality of the NRs have also been improved signicantly. Since the structural improvement have a signicant impact on charge transport properties as well, therefore the eect of post growth annealed has also been investigated by the electrical characterization of ZnO/CuO based heterojunction. The current-voltage measurements of the post growth annealed sample showed improvement in the current in comparison with as grown sample. The impedance study has also conrmed that the post growth annealed has inuence on the electrical properties. The presented post growth annealed heterojunction of ZnO/CuO may have space in applications like sensors and oxide based diodes in the devices fabrication.

show abstract

“…Previously reported CuO nanostructures are grown on Cu substrate using thermal oxidation process or synthesized through wet chemical routes on other supporting substrates like glass. However , CuO nanostructures (NS) grown by the later method showed poor adhesion to the substrates 11 . In recent years, the simple and cost effective hydrothermal method has proven to be successful for the synthesis of nanostructures of CuO or ZnO 12,13 .…”

Section: Introductionmentioning

confidence: 99%

CuO/ZnO Nanocorals synthesis via hydrothermal technique: growth mechanism and their application as Humidity Sensor

et al. 2012

View full text Add to dashboard Cite

We demonstrate hydrothermal synthesis of coral-like CuO nanostructures by selective growth on ZnO nanorods (NR) at low temperatures. During the hydrothermal processing the resultant hydroxylated and eroded surface of ZnO NR becomes favorable for the CuO nanostructures growth via oriented attachments. Heterojunction p-n diodes fabricated from the CuO/ZnO nanocorals (NC) reveal stable and high rectification diode properties with a turn-on voltage ~1.52 V and negligible reverse current. The humidity sensing characteristics of the CuO/ZnO NC diodes exhibit a remarkable linear (in a semilogarithmic scale) decrease in the DC resistance by more than three orders when the relative humidity is changed from 30 -90 %. The NC humidity sensor is also found to reveal the highest sensitivity factor ~6045 among available data for the constituent material's and a response and recovery time of 6 s and 7 s, respectively.

show abstract

CuO nanostructures prepared by a chemical method

Cited by 76 publications

References 21 publications

Influence of cadmium sulfide nanoparticles on structural and electrical properties of polyvinyl alcohol films

Influence of cadmium sulfide nanoparticles on structural and electrical properties of polyvinyl alcohol films

Effect of Post Growth Annealing on the Structural and Electrical Properties of ZnO/CuO Composite Nanostructures

CuO/ZnO Nanocorals synthesis via hydrothermal technique: growth mechanism and their application as Humidity Sensor

Contact Info

Product

Resources

About