Fabrication and Characterization of p-n Homojunctions in Cuprous Oxide by Electrochemical Deposition

2007 ◽  
Vol 10 (9) ◽  
pp. H248 ◽  
Author(s):  
Longcheng Wang ◽  
Meng Tao
2009 ◽  
Vol 48 (3) ◽  
pp. 035501 ◽  
Author(s):  
Fu-Yung Hsu ◽  
Shiu-Jen Liu ◽  
Yung-I Lu ◽  
Liang-Yu Chen ◽  
Hau-Wei Fang

2015 ◽  
Vol 15 (10) ◽  
pp. 8149-8154 ◽  
Author(s):  
Hoi Jin Yoon ◽  
Ki Su Bang ◽  
Seung-Yun Lee

This paper reports on the fabrication of copper-based nanoparticles using microemulsions, and their optical properties for use in transparent solar cell applications. Microemulsions, containing pure copper nanoparticles, were prepared using the reaction process of CuCl2 with KBH4. We have confirmed that various sized copper nanoparticles, with a radius of up to 10 nm, form within an aqueous concentration of CuCl2 ≤ 2.0 M. Using microstructural observation, we found that parts of pure copper nanoparticles, synthesized in microemulsions, oxidize into cuprous oxide and agglomerate with one another in a normal atmosphere. The copper-based particles were then transferred to substrates by using a spin-coating process. Variations in spin speed led to significant changes in the transmittance and reflectance of the spin-coated particles. Transparent and anti-reflective properties of the particles were obtained at an optimum condition of spin speed. This suggests that the fabrication of the copper-based nanoparticles can be effectively applied to the manufacturing of transparent solar cells.


2010 ◽  
Vol 160 (11-12) ◽  
pp. 1219-1222 ◽  
Author(s):  
Ryosuke Motoyoshi ◽  
Takeo Oku ◽  
Atsushi Suzuki ◽  
Kenji Kikuchi ◽  
Shiomi Kikuchi ◽  
...  

Author(s):  
Bradley L. Thiel ◽  
Chan Han R. P. ◽  
Kurosky L. C. Hutter ◽  
I. A. Aksay ◽  
Mehmet Sarikaya

The identification of extraneous phases is important in understanding of high Tc superconducting oxides. The spectroscopic techniques commonly used in determining the origin of superconductivity (such as RAMAN, XPS, AES, and EXAFS) are surface-sensitive. Hence a grain boundary phase several nanometers thick could produce irrelevant spectroscopic results and cause erroneous conclusions. The intergranular phases present a major technological consideration for practical applications. In this communication we report the identification of a Cu2O grain boundary phase which forms during the sintering of YBa2Cu3O7-x (1:2:3 compound).Samples are prepared using a mixture of Y2O3. CuO, and BaO2 powders dispersed in ethanol for complete mixing. The pellets pressed at 20,000 psi are heated to 950°C at a rate of 5°C per min, held for 1 hr, and cooled at 1°C per min to room temperature. The samples show a Tc of 91K with a transition width of 2K. In order to prevent damage, a low temperature stage is used in milling to prepare thin foils which are then observed, using a liquid nitrogen holder, in a Philips 430T at 300 kV.


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