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Volume 5, Issue 6 (Suppl) J Mat. Sci.
ISSN: 2321-6212 Advanced Materials 2017
October 26-28, 2017
OCTOBER 26-28, 2017 OSAKA, JAPAN
13TH INTERNATIONAL CONFERENCE ON
Advanced Materials and Nanotechnology
PbS nanoparticles/single-wall Carbon Nanotubes nanohybrid materials synthesis by means of the
pulsed laser deposition approach and their integration into photoactive devices
My Ali El Khakani
Universite of Quebec, Canada
We will recall first the unique features of the Pulsed Laser Deposition (PLD) technique and its latitude to synthesize either
0D and 1D nanomaterials or Nanohybrid (NH) structures. Secondly, the PLD technique will be shown to be highly
effective for the physical synthesis of highly crystalline PbS NanoParticles (NPs) onto various substrates with the latitude to
tailor their size, and hence their bandgap over the 0.75-1.45 eV through quantum confinement effects. Finally, we will show
that the PLD is very appropriate for the decoration of 1D nanomaterials (e.g., Single-Wall Carbon Nanotubes (SWCNTs) or
TiO2 nanorods (NRs)) by PbS-NPs leading to the formation of a novel class of nanohybrid materials. The achieved SWCNT/
PbS-NPs nanohybrids were straightforwardly integrated into PhotoConductive (PC) devices exhibiting unprecedented
photo-response values (~700 % and ~1400 % at 633 and 405 nm, respectively). On the other hand, the TiO2-NRs/SWCNTs
nanostructures were integrated into nano-heterojunction PV devices of which PCE was as high as 5.3%. The high-purity
of the PbS NPs along with their intimate bonding to the 1D structures (without the use of any bridging ligands) are key
factors to ensure a highly efficient charge transfer between PbS-NPs and SWCNTs. This particular architecture is believed to
be responsible for the remarkable PC/PV properties of these PLD synthesized nanohybrid materials, where the occurrence of
Multi-Exciton Generation (MEG) has been recently pointed out.
Biography
My Ali El Khakani is the Leader of the NanoMat Group which he founded at the Institut National de la Recherche Scientifique (Centre-Energie, Materiaux et
Telecommunications, Canada). He has published more than 190 refereed publications in prestigious journals and co-holds 5 patents. He has served on the
Editorial-Board of Sensors Letters and he is currently a Member of the Editorial Board of the Nanotechnology and Scientific Reports journals. He is also a regular
reviewer for more than 25 refereed scientific journals.
My Ali El Khakani, J Mat. Sci. 2017, 5:6
DOI: 10.4172/2321-6212-C1-008