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Stable ultrathin surfactant-free surface-engineered silicon nanocrystal solar cells deposited at room temperature

Švrček, Vladimir, McDonald, C, Lozac'h, Mickael, Tayagaki, Takeshi, Koganezawa, Tomoyuki, Miyadera, Tetsuhiko, Mariotti, D and Matsubara, Koji (2017) Stable ultrathin surfactant-free surface-engineered silicon nanocrystal solar cells deposited at room temperature. Energy Science & Engineering, n.a. . n/a-n/a. [Journal article]

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URL: http://dx.doi.org/10.1002/ese3.165

DOI: 10.1002/ese3.165

Abstract

We present a scalable technology at room temperature for the fabrication of ultrathin films based on surfactant-free surface-engineered silicon nanocrystals (SiNCs). Environmentally friendly pulsed fsec laser induced surface engineering of SiNCs and vacuum low-angle spray deposition is used to produce ultrathin films. Surface engineering of SiNCs improved stability and dispersibility of SiNCs by allowing thin (30 nm thickness) and exceptionally smooth (mean square roughness corresponds to 0.32 nm) film deposition at room temperature. The quality of the SiNC thin films is confirmed by ultrafast photoluminescence measurements and by applying such films for solar cells. We demonstrate that films produced with this approach yield good and stable devices. The methodology developed here is highly relevant for a very wide range of applications where the formation of high-quality ultrathin films of quantum dots with controllable thickness and smoothness is required.

Item Type:Journal article
Keywords:Silicon nanocrystals, surfactant-free surface engineering, ultrathin film solar cells
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:38531
Deposited By: Professor Davide Mariotti
Deposited On:05 Sep 2017 10:53
Last Modified:23 Oct 2017 16:07

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