Influence of the preparation conditions in the morphology and photoluminescence of CdS nanowires

Author

Zayas-Bazan, P.G. ; Gutierrez Z.-B, K. ; Santana, G. ; Santoyo-Salazar, J. ; Romero-Ibarra, J. Esau ; Contreras-Puente, G. ; Hernandez, L.C. ; Tamargo, M. ; Gonzalez, J.C. ; de Melo, O.

Author_Institution

Phys. Fac., Univ. of Havana, Havana, Cuba

fYear

2014

fDate

8-13 June 2014

Firstpage

1110

Lastpage

1114

Abstract

In this work, CdS nanowires (NWs) were prepared by the vapor-liquid-solid (VLS) method using Au catalytic nanoparticles (NPs) deposited on different substrates. Scanning and transmission electron microscopy techniques (SEM, TEM) allowed observing NWs with different morphologies: long NWs with lengths of several microns, networks and pointed NWs. Nanotubes were also observed when CdS substrates were used. Possible growth mechanisms are considered for each different morphology. NWs also shown very brilliant photo-luminescence (PL), even at RT. PL spectra is studied as a function of temperature to determine their properties and the origin of the different peaks.

Keywords

II-VI semiconductors; cadmium compounds; catalysis; nanofabrication; nanowires; photoluminescence; scanning electron microscopy; semiconductor nanotubes; transmission electron microscopy; wide band gap semiconductors; CdS; SEM; TEM; catalytic nanoparticles; morphology; nanotubes; nanowires; photoluminescence; scanning electron microscopy; transmission electron microscopy; vapor-liquid-solid method; Gold; Microscopy; Morphology; Nanowires; Photoluminescence; Substrates; CdS; nanotubes; nanowires; photoluminescence;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialist Conference (PVSC), 2014 IEEE 40th

Conference_Location

Denver, CO

Type

conf

DOI

10.1109/PVSC.2014.6925110

Filename

6925110