NDLI: Carriers multiplication in neighboring surfactant-free silicon nanocrystals produced by 3D-surface engineering in liquid medium.

Content Provider	IEEE Xplore Digital Library
Author	Svrcek, V. Mariotti, D. Matsubara, K. Kondo, M.
Copyright Year	2012
Description	Author affiliation: Research Center for Photovoltaics, National Institute of Advanced Industrial Science and Technology, (AIST), Central 2, Umezono 1-1-1, Tsukuba, 305-8568, Japan (Svrcek, V.; Matsubara, K.; Kondo, M.) \|\| Nanotechnology & Integrated Bio-Engineering Centre (NIBEC), University of Ulster, UK (Mariotti, D.)
Abstract	Carriers multiplication in silicon nanocrystals (Si-ncs) in a one promising eefect to considerably enhance conversion efficiency of solar cells that can overcome theoretical limits. A close proximity of Si-ncs is an essential factor for carrier multiplication due to the separated quantum cutting effect. In this study we present results on investigation of 3-dimensional (3D) surface engineering of Si-ncs directly in water. Thus at the same time allow close proximity Si-ncs without of using any surfactant. The approach is based on ns laser treatment of Si-ncs dispersed in liquid solution. We explore the excitation wavelength dependence of photoluminescence quantum yield (ratio of the number of emitted and absorbed photons) for Si-ncs as prepared and surface engineered by ns laser processing. Our results suggest that close proximity of Si-ncs in spherical particles induced by laser processing might enhance also carriers multiplication.
Starting Page	000101
Ending Page	000104
File Size	720822
Page Count	4
File Format	PDF
ISBN	9781467300643
ISSN	01608371
e-ISBN	9781467300667
DOI	10.1109/PVSC.2012.6317577
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Silicon Nanocrystals Surface emitting lasers Laser excitation Surface engineering Surface treatment Photonics surface engineering silicon nanocrystals carrier multiplication
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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