Effect of Oxygen Partial Pressure on Properties of NiO Thin Films
Journal Title: 河南科技大学学报（自然科学版） - Year 2019, Vol 40, Issue 2
Abstract
NiO thin films were prepared on sapphire substrates by using a JGP-300 ultra-high vacuum magnetron sputtering coating apparatus. The effect of oxygen partial pressure on the crystal structure, surface topography, optical properties and electrical properties of Ni O films were studied by using X-ray diffractometer ( XRD) , atomic force microscope ( AFM) , ultraviolet spectrophotometer ( UV-VIS) and Hall test. The results show that Ni O film has a single ( 111) diffraction peak. The Ni O film exhibits better crystal performance when the oxygen partial pressure is 60%. With the oxygen partial pressure increasing, the surface of Ni O film gradually becomes smoother. The band gap of Ni O films obtained by ( αhν) 2-hν curve is 3. 60 ～ 3. 77 eV. All Ni O films have good p-type conductivity characteristics, and the hole carrier concentration is 5. 45 × 1017～2. 16 × 1019 cm-3.
Authors and Affiliations
Zhiyuan WANG, Yutao GAO, Zhennan FENG, Yang ZHAO, Hui WANG
Keywords
Related Articles
- EP ID EP422484
- DOI 10.15926/j.cnki.issn1672-6871.2019.02.018
- Views 70
- Downloads 0
Improvement of Magnetically Coupled Resonant Wireless Power Transmission System
On the base of three coils magnetically coupled resonant wireless power transmission system,the coils structure of system was improved. According to the theory of mutual inductance coupling circuit,the mathematical expre...
Control Algorithm of Vehicle Emergency Collision Avoidance System
1
Die Life Prediction and Process of Cold Rotary Forging for Hypoid Gears
In order to reduce production cost and increase production efficiency, the die life of the cold rotary forging was predicted and the process optimization was carried out. Stress and strain of the die in process of cold r...
Front Vehicle Detection Algorithm in Multi-lane Complex Environment
In order to solve the problem of front vehicle target detection in intelligent vehicle auxiliary driving system, a vehicle detection algorithm based on improved shadow feature and depth network learning was proposed.Base...
Application of Codebooks Clustering Vector Quantization Algorithm to Speaker Recognition
The vector quantization algorithm used in the speaker recognition system required full search of the existing codebooks in matching and recognition. The calculation time of full search was increased while the number of s...