Advertisement

Topics

Effects of Calcination Holding Time on Properties of Wide Band Gap Willemite Semiconductor Nanoparticles by the Polymer Thermal Treatment Method.

08:00 EDT 11th April 2018 | BioPortfolio

Summary of "Effects of Calcination Holding Time on Properties of Wide Band Gap Willemite Semiconductor Nanoparticles by the Polymer Thermal Treatment Method."

Willemite is a wide band gap semiconductor used in modern day technology for optoelectronics application. In this study, a new simple technique with less energy consumption is proposed. Willemite nanoparticles (NPs) were produced via a water-based solution consisting of a metallic precursor, polyvinylpyrrolidone (PVP), and underwent a calcination process at 900 °C for several holding times between 1-4 h. The FT-IR and Raman spectra indicated the presence of metal oxide bands as well as the effective removal of PVP. The degree of the crystallization and formation of the NPs were determined by XRD. The mean crystallite size of the NPs was between 18.23-27.40 nm. The morphology, particle shape and size distribution were viewed with HR-TEM and FESEM analysis. The willemite NPs aggregate from the smaller to larger particles with an increase in calcination holding time from 1-4 h with the sizes ranging between 19.74-29.71 nm. The energy values obtained from the experimental band gap decreased with increasing the holding time over the range of 5.39 eV at 1 h to at 5.27 at 4 h. These values match well with band gap obtained from the Mott and Davis model for direct transition. The findings in this study are very promising and can justify the use of these novel materials as a potential candidate for green luminescent optoelectronic applications.

Affiliation

Journal Details

This article was published in the following journal.

Name: Molecules (Basel, Switzerland)
ISSN: 1420-3049
Pages:

Links

DeepDyve research library

PubMed Articles [32077 Associated PubMed Articles listed on BioPortfolio]

Disclosure and holding back: Communication, psychological adjustment, and marital satisfaction among couples coping with osteoarthritis.

This study examined two types of illness-related communication (disclosure and holding back) and their associations with psychological adjustment and marital satisfaction in patients with knee osteoar...

Transient charge and energy flow in the wide-band limit.

The wide-band limit is a commonly used approximation to analyze transport through nanoscale devices. In this work we investigate its applicability to the study of charge and heat transport through mol...

Synthesis, Photophysical, Electrochemical, and Halochromic Properties of peri-Naphthoindigo.

A facile synthesis of peri-naphthoindigo (PNI) was reported for the first time from simple precursor. Installation of a chromophore at the peri-position of naphthalene is very unique in terms of synth...

P-type β-MoO nanostructures on n-Si by hydrogenation process: synthesis and application towards self-biased UV-visible photodetection.

We report on the synthesis and UV-vis photodetection application of p-type MoO nanostructures (NSs) on Si substrate. β-MoO NSs have been synthesized from previously grown α-MoO structures/n-type Si ...

Cobalt oxide nanorods with special pore structure for enhanced ethanol sensing performance.

Cobalt oxide (CoO) nanorods with special pore structure were successfully synthesized by a facile hydrothermal method with proper temperature calcination. The relationship between morphologies, struct...

Clinical Trials [5700 Associated Clinical Trials listed on BioPortfolio]

Comparing TR Band to Statseal in Conjunction With TR Band

The primary objectives of this study are to evaluate the performance of StatSeal Advanced used in conjunction with the TR Band (SSA) as compared to the TR Band without SSA (TRB) relative t...

Energy Cost for Holding a MedGem® Indirect Calorimeter

The goal of this clinical protocol is to perform a randomized crossover study to determine the energy cost of holding the MedGem® device above a person's normal resting metabolic rate (RM...

Kangaroo Holding Effects on Breast Milk

Kangaroo holding is a skin-to-skin method of holding a baby. Many research studies have investigated the maternal and infant benefits associated with kangaroo holding. The purpose of thi...

Comparison of Two Protocols for Deflation of Radial Band Following Coronary Procedures Via the Radial Artery

Coronary angiography is now mainly performed via the radial route rather than the femoral route. At the end of the procedure, the sheath is removed and a band is inflated to obtain hemosta...

Effectiveness Study of the BOA(R)-Constricting IV Band

The purpose of this study is to determine whether the BOA(R)-Constricting IV Band is superior to standard methods for starting an IV.

Medical and Biotech [MESH] Definitions

An overuse injury causing lateral knee pain that results from repetitive friction of the iliotibial band over the lateral femoral epicondyle.

The properties and processes of drug, toxin, and poison metabolism, and their interactions and effects on biological systems. Toxicological phenomena also include the adverse effects of physical phenomena such as RADIATION and NOISE.

A class of statistical procedures for estimating the survival function (function of time, starting with a population 100% well at a given time and providing the percentage of the population still well at later times). The survival analysis is then used for making inferences about the effects of treatments, prognostic factors, exposures, and other covariates on the function.

The ability to estimate periods of time lapsed or duration of time.

Treatment using irradiation with LASER light of low power intensity so that the effects are not due to heat, as in LASER THERAPY. These non-thermal effects are thought to be mediated by a photochemical reaction that alters CELL MEMBRANE PERMEABILITY, leading to increased mRNA synthesis and CELL PROLIFERATION. Low-level laser therapy has been used for a wide variety of conditions, but most frequently for wound healing and pain control.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article