What is the work function of ZnO?

What is the work function of ZnO?

The work function of dyed zinc oxide is 4.82 eV at 5.0 X 10-7 mole of adsorbed dye per 1 g of ZnO for the minimum value of Vc, and 4.73 eV at saturation, 7.65 X 10- 7 mole per 1 g of ZnO.

What are the properties of ZnO?

Due to the distinctive properties of ZnO is focused for huge consideration especially in the type of hexagonal wurtzite structure….2.2. Crystal structure of ZnO.

Physical Parameters Values
Density 5.66 g/cm3
Refractive Index 2.01
Band Gap 3.4 eV, Direct
Electron effective mass 0.24

What is ZnO structure?

Zinc oxide/Formula

Where is ZnO used?

Zinc oxide is used in a wide range of cosmetics and personal care products including makeup, nail products, baby lotions, bath soaps and foot powders. Zinc oxide is also used in skin protectants, such as diaper rash ointments and sunscreen products.

What is the work function of copper?

Work Functions for Photoelectric Effect

Element Work Function(eV)
Copper 4.7
Gold 5.1
Iron 4.5
Lead 4.14

What are the properties of ZnO nanoparticles?

ZnO nanoparticles have different shapes (rod-like, star-like and isometric) and a broad size distribution range of 30–150 nm. The ZnO particles were present mainly as clusters. In addition, spherical particles with a size between 200 nm and 1 μm were present.

Why is ZnO important?

Zinc oxide nanoparticles (ZnO NPs), as one of the most important metal oxide nanoparticles, are popularly employed in various fields due to their peculiar physical and chemical properties [2, 3]. In addition, ZnO NPs have superior antibacterial, antimicrobial, and excellent UV-blocking properties.

What is the formula for ZnO?

What is wurtzite structure of ZnO?

The wurtzite structure of ZnO can be considered to be composed of two interpenetrating hexagonal close packed (hcp) sublattices of cation (Zn) and anion (O) displaced by the length of cation-anion bond in the c-direction . The lattice constant of the ZnO hexagonal unit cell are a=3.2500 Å and c=5

How is surface work function of ZnO films calculated?

Pure ZnO and Al-doped ZnO (ZnO:Al) films were deposited on n-type Si substrate by radio frequency (RF) magnetron sputtering. Surface work function were calculated using the first-principles with pseudopotential method based on density-functional theory (DFT) of ZnO and ZnO:Al surface structure.

What is the theoretical value of the work function of ZnO?

It was found that the theoretical value of work function of (002) plane ZnO and ZnO:Al were 5.076ev and 4.978ev respectively. Following I-V-T characteristics of the heterojunctions were investigated, the work function of ZnO and ZnO:Al were obtained at 4.71ev and 4.62ev, respectively.

How is work function of azo film investigated?

The Fermi energy levels, work function values, surface chemistry, and optical band gaps of the AZO films were investigated via X-ray photoelectron spectroscopy (XPS) and UV–Vis spectroscopy.

Where can I find studies on ZnO films?

Studies on ZnO are mainly * Hong Deng. Tel.: 86-2883202551; fax: 86-2883202551. E-mail address: [email protected] Available online at © 2011 Published by Elsevier B.V. Selection and/or peer-review under responsibility of International Materials Science Society. Open access under CC BY-NC-ND license.