scholarly journals Growth and Characterization of CuO Nanostructures on Si for the Fabrication of CuO/p-Si Schottky Diodes

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
S. Çetinkaya ◽  
H. A. Çetinkara ◽  
F. Bayansal ◽  
S. Kahraman
Keyword(s):  
Schottky Diodes ◽  
Sol Gel ◽  
Sem Images ◽  
Gel Method ◽  
Sol Gel Method ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Cbd Method ◽  
Xrd Techniques

CuO interlayers in the CuO/p-Si Schottky diodes were fabricated by using CBD and sol-gel methods. Deposited CuO layers were characterized by SEM and XRD techniques. From the SEM images, it was seen that the film grown by CBD method is denser than the film grown by sol-gel method. This result is compatible with XRD results which show that the crystallization in CBD method is higher than it is in sol-gel method. For the electrical investigations, current-voltage characteristics of the diodes have been studied at room temperature. ConventionalI-Vand Norde’s methods were used in order to determine the ideality factor, barrier height, and series resistance values. It was seen that the morphological and structural analysis are compatible with the results of electrical investigations.

Characterization of Nanostructured n-ZnO/p-Si Heterojunction Prepared by a Simple Sol–Gel Method

2016 ◽  
Vol 15 (04) ◽  
pp. 1650014 ◽  
Author(s):  
Bo He ◽  
Jing Xu ◽  
HuanPo Ning ◽  
Hao Xiong ◽  
HuaiZhong Xing ◽  
...  
Keyword(s):  
Sol Gel ◽  
Hall Effect Measurement ◽  
The Novel ◽  
Zno Film ◽  
Photoelectric Device ◽  
Gel Method ◽  
Sol Gel Method ◽  
Current Voltage ◽  
Heterojunction Device

The nanostructured ZnO film was prepared on a texturized Si wafer by a simple sol–gel method to fabricate n-ZnO/p-Si heterojunction photoelectric device. The novel sol–gel method is cheap and convenient. The structural, optical and electrical properties of the nanostructured ZnO film were studied by XRD, SEM, XPS, PL, UV–Vis spectrophotometer and Hall effect measurement. The current–voltage (I–V) curve of nanostructured ZnO/p-Si heterojunction device shows good rectifying behavior. Good photoelectric behavior is obtained.

Synthesis and Thermal Characterization of Co-Doped ZnO Nanocomposites Prepared by Sol-Gel Method

2012 ◽  
Vol 512-515 ◽  
pp. 1753-1756
Author(s):  
Zi Hua Wu ◽  
Hua Qing Xie ◽  
Qing Feng Zeng
Keyword(s):  
Thermal Conductivity ◽  
Sol Gel ◽  
Thermal Characterization ◽  
Sem Images ◽  
Additional Absorption ◽  
Spin Configuration ◽  
Gel Method ◽  
Sol Gel Method ◽  
Tetrahedral Crystal

Polyparaphenylene/Zn0.925Co0.075O(PPP/Zn0.925Co0.075O) nanocomposites were synthesized by using a sol-gel method and their thermal conductivity properties were measured. The XRD pattern of Zn0.925Co0.075O shows the single phase wurtzite structure. The SEM images show that the lighter-contrast area is PPP and the dark-contrast area is the polycrystalline of Zn0.925Co0.075O. The increase in the band edge is a clear indication for the incorporation of Co inside the ZnO lattice. The observation of three additional absorption peaks provided evidence that the 3d7 high-spin configuration of Co2+ under the tetrahedral crystal field was probably formed by neighboring O2- ions. With the increase of the PPP content, the thermal conductivity of nanocomposite samples is smaller than those of pure Zn0.925Co0.075O. Due to the high density of interfaces and grain boundaries present in the nanocomposites, the scattering of phonon across a broad wavelength spectrum was enhanced. This suppressed the lattice thermal conductivity of the nanocomposites significantly.

Preparation and Characterization of Cr2O3 Nano-Powders by Sol-Gel Method

2007 ◽  
Vol 353-358 ◽  
pp. 2111-2114 ◽  
Author(s):  
Chun Cheng Zhu ◽  
Yan Hong ◽  
Jian Guang Zhang ◽  
Bai Bin Zhou
Keyword(s):  
Aqueous Ammonia ◽  
Sol Gel ◽  
Chromium Nitrate ◽  
X Ray Diffraction ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Xrd Techniques ◽  
Differential Thermogravimetry

Cr2O3 nano-powders were successfully fabricated with using chromium nitrate and aqueous ammonia as starting material and urea as dispersant agent by sol-gel method. The formation of crystalline phase during heat treatment of dry gel was characterized by differential thermogravimetry (DTG) and X-ray diffraction (XRD) techniques and the temperature of calcination was determined as 400°C. Scanning electron microscopy (SEM) was utilized to observe the morphology of the as-fabricated Cr2O3 particles. The results showed that Cr2O3 particles are spherical or square with little agglomeration and a diameter of about 30 nm. The specific surface area of Cr2O3 particles was measured as 44.23 m2/g by Brunauer-Emmett-Teller (BET).

Current–Voltage Characterization of Transparent ITO/ZnO:B/ZnO:(Al + In)/Ag Schottky Diodes Prepared with Multilayer Films by Sol–Gel Deposition

2019 ◽  
Vol 49 (3) ◽  
pp. 1993-2002
Author(s):  
Manuel A. Hernández-Ochoa ◽  
Humberto Arizpe-Chávez ◽  
Rafael Ramírez-Bon ◽  
Alain Pérez-Rodríguez ◽  
Manuel Cortez-Valadez ◽  
...  
Keyword(s):  
Schottky Diodes ◽  
Sol Gel ◽  
Multilayer Films ◽  
Current Voltage

Characterization of CoCrFeO 4 Nanocrystals Prepared by a Sol-Gel Method

2001 ◽  
Vol 18 (5) ◽  
pp. 692-694 ◽  
Author(s):  
Xiong Gang ◽  
Mai Zhen-Hong ◽  
Wang Chao-Ying ◽  
Ni Yong-Ming ◽  
Zhao Zhong-Xian ◽  
...  
Keyword(s):  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method
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