Single crystalline quasi aligned one dimensional P-type Cu2O nanowire for improving Schottky barrier characteristics

Hafez, M.; Al-Marzouki, F.; Mahmoud, Waleed E.

doi:10.1016/j.matlet.2011.03.093

Cited by 100 publications

(12 citation statements)

References 30 publications

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“…The XRD pattern of the dried particles in Figure 2 illustrates the cubic Cu2O (JCPDS File 78-2076) without any noticeable impurities in the phase 14,20 . The morphologies of the particles were further analysed by SEM as shown in Figure 1b,c.…”

Section: Resultsmentioning

confidence: 99%

Study of Cu2O particle morphology on microwave field enhancement

Musho

Wildfire

Houlihan

et al. 2018

Materials Chemistry and Physics

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The dielectric enhancement and modulation of a cuprous oxide (Cu2O) microwave-active catalyst material is investigated from an experimental and computational point of view. Experimental synthesis of two particle morphologies that included a cube and spike were carried out using an EDTA hydrothermal synthesis method. The permittivity for the spiked particles at low volume fraction in a paraffin composite exhibited a 20% increase when compared to the cube-shaped particles at the same volume fraction. Using a finite difference time domain (FDTD) simulation, the improvement in permittivity was attributed to the enhanced electric field near the tip of the spike particles and the neighboring interaction at higher volume fractions. The increased electric field at the tips of the particles induces a change in polarizability (dipole density) within the matrix material, which increases the effective dielectric properties of the composite. Furthermore, it was determined that an electrically conductive particle within a high permittivity matrix material is advantageous for generating high localized electric fields that can be utilized for microwave-assisted catalytic reactions.

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Section: Resultsmentioning

confidence: 99%

Study of Cu2O particle morphology on microwave field enhancement

Musho

Wildfire

Houlihan

et al. 2018

Materials Chemistry and Physics

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“…Nonlinear behavior starts to predominate above this value of the applied voltage, indicating space charge‐limited conduction mechanism. To investigate the source of this space charge either from electrode injection or because of the ionization in the nanocomposites, we studied the Richardson–Schottky and Pool–Frenkel models (25, 26). According to Schottky mechanism, the current density is related to the applied field by equation (1) (27, 28).…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of PVA/YBCO nanocomposite for improvement of solar energy conversion

2013

Self Cite

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The development of nano-metal oxide materials with unique optoelectronic properties such as highly solar energy absorption and generation of dense amount of electrons is one of the hottest topics now days. The incorporation of these nanomaterials into polymers results in an improvement of the properties of these polymers. Therefore, the understanding of their electronic properties is an essential demand to introduce these nanocomposites into service life. In this work, Yttrium barium copper oxide (YBCO) nanopowders with a uniform particle size of around 11 nm was prepared, sintered, and blended with polyvinyl alcohol (PVA) by casting technique. The characteristics of the structure and morphology of PVA/YBCO nanocomposite films are studied using X-ray diffraction and transmission electron microscopy. The influence of YBCO nanoparticles on the thermal stability of PVA showed that the YBCO enhanced the thermal stability and reduced the rate of thermal degradation of PVA nanocomposites. Current-voltage behavior of PVA/YBCO nanocomposite films was measured at different temperatures. An explanation for the charge carrier concentration in the conduction band with the calculation of the barrier height, activation energy, and conversion and their dependence on temperature and applied field is presented.

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“…This means the transport of current through the diode is due to the temperature-activation mechanism. Therefore, one may characterize the I-V of this diode by using thermionic emission model [18][19][20], which may express as…”

Section: Methodsmentioning

confidence: 99%