Fabrication of two-dimensional close-packed arrays of colloidal silicon nanoparticles via Langmuir-Blodgett deposition

Author

Pengfei Zhang ; Shujuan Huang ; Conibeer, G.

Author_Institution

Sch. of Photovoltaic & Renewable Energy Eng., Univ. of New South Wales, Sydney, NSW, Australia

fYear

2012

fDate

12-14 Dec. 2012

Firstpage

181

Lastpage

182

Abstract

An efficient deposition method for colloidal nanoparticles (NPs), Langmuir-Blodgett (LB) deposition is investigated and used to fabricate close- packed arrays of silicon (Si) NPs. Both amorphous and ordered arrays are achievable by tuning the stabilizing time and surface pressure (SP) of the LB film on the surface of water in the LB procedures. The deposited NP layers were characterised by AFM and TEM. AFM observation showed successful formation of monolayers, while TEM results clearly showed the orientations of the arrays. Such arrays might be used as the absorber materials of hot carrier solar cells because of their potential for strong phonon confinement [1].

Keywords

Langmuir-Blodgett films; amorphous semiconductors; atomic force microscopy; colloids; elemental semiconductors; liquid phase deposition; nanofabrication; nanoparticles; semiconductor growth; semiconductor thin films; silicon; transmission electron microscopy; AFM; Langmuir-Blodgett deposition; Langmuir-Blodgett film; Si; TEM; absorber materials; amorphous arrays; atomic force microscopy; colloidal silicon nanoparticles; deposition method; hot carrier solar cells; monolayers; ordered arrays; phonon confinement; surface pressure; transmission electron microscopy; two-dimensional close-packed arrays; water surface; Films; Hot carriers; Nanoparticles; Photovoltaic cells; Silicon; Solids;

fLanguage

English

Publisher

ieee

Conference_Titel

Optoelectronic and Microelectronic Materials & Devices (COMMAD), 2012 Conference on

Conference_Location

Melbourne, VIC

ISSN

1097-2137

Print_ISBN

978-1-4673-3047-3

Type

conf

DOI

10.1109/COMMAD.2012.6472420

Filename

6472420