Vertical Growth of Core-Shell III-V Nanowires for Solar Cells Application

Title
Vertical Growth of Core-Shell III-V Nanowires for Solar Cells Application
Authors
김도양M. H. Bae신재철Y. J. Kim이유종최경진성태연최원준
Keywords
Nanowire(s); Core-Shell Nanowire(s); Solar Cell; MOCVD; III-V Compound(s)
Issue Date
2014-04
Publisher
Journal of nanoscience and nanotechnology
Citation
VOL 14, NO 4, 2913-2918
Abstract
High density (In)GaAs/GaAs/AlGaAs nanowires (NWs) consisting of n-type core and p-type shell have been vertically grown on (111) GaAs substrate using metal organic chemical vapor deposition (MOCVD) and fabricated into solar cells. Au colloidal nanoparticles (NPs) are employed as a catalyst. High density nanowires were obtained by uniform distribution of Au NPs. Fe-SEM, TEM and HRTEM images show that the morphology of shell is sensitive to p-doping concentration. Increase in the density of p-doping precursor results in “kinking” of NPs and rough shell surface. The origin of kinking has been explained by the GaAs twin phases due to Zn segregation on the surface of shell. It has been observed that the morphology of NPs can be controlled through optimizing various source purge technique of DEZn and deposition temperature. Electrical properties of core–shell doped NWs are carried out using I–V characterization. The core–shell NWs show characteristics of p–n junction as revealed by I–V studies.
URI
http://pubs.kist.re.kr/handle/201004/46847
ISSN
15334880
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE