TY  - BOOK
AU  - Alaa yahia faid
AU  - Randa Abdelkarim , 
AU  - Saad.Megahed Elraghy , 
TI  - Synthesis and characterization of ZnO-Cu₂O core shell nanowires for solar energy applications / 
PY  - 2016///
CY  - Cairo : 
PB  - Alaa yahia faid , 
KW  - Nanowires
KW  - Solar Energy
KW  - Zinc Oxide
N1  - Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Metallurgical Engineering; Issued also as CD
N2  - Research into nanomaterials has become more and more popular because of their unique properties compared to bulk materials. Amongst various functional materials, zinc oxide (ZnO), with a direct electron energy band gap of 3.34 eV at room temperature, is an important optoelectronic material with an intrinsically n-type semiconducting property. However, to form a p-type ZnO semiconductor is still a challenge. Copper oxide , compared to ZnO, has a much smaller band gap, 1.2 eV, and shows an intrinsically p-type semiconducting property. It has been suggested that when Cu₂O is alloyed with ZnO properly, a p-n semiconductor heterojunction can be formed to be utilized in solar cell and gas sensor applications.  In this thesis, ZnO/Cu₂O core-shell nanowire arrays have been successfully fabricated by a simple two-step process. ZnO nanowire arrays were first grown by the anodization method using Zn foil substrates. Copper then was deposited on as-grown ZnO nanowire arrays by chemical bath deposition method. ZnO/Cu₂O core-shell nanowire arrays have exhibited better photoelectrochemical efficiency in visible region as compared to the pure ZnO nanowire arrays, which suggests that ZnO/Cu₂O core-shell nanowire arrays have strong potential as nanoscale building blocks in solar cells and light emission devices
UR  - http://172.23.153.220/th.pdf
ER  -