Title :
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
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;
Conference_Titel :
Optoelectronic and Microelectronic Materials & Devices (COMMAD), 2012 Conference on
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4673-3047-3
DOI :
10.1109/COMMAD.2012.6472420
