Please use this identifier to cite or link to this item:
|dc.title||Alkylamine capped metal nanoparticle "inks" for printable SERS substrates, electronics and broadband photodetectors|
|dc.identifier.citation||Polavarapu, L., Manga, K.K., Yu, K., Ang, P.K., Cao, H.D., Balapanuru, J., Loh, K.P., Xu, Q.-H. (2011-05). Alkylamine capped metal nanoparticle "inks" for printable SERS substrates, electronics and broadband photodetectors. Nanoscale 3 (5) : 2268-2274. ScholarBank@NUS Repository. https://doi.org/10.1039/c0nr00972e|
|dc.description.abstract||We report a facile and general method for the preparation of alkylamine capped metal (Au and Ag) nanoparticle "ink" with high solubility. Using these metal nanoparticle "inks", we have demonstrated their applications for large scale fabrication of highly efficient surface enhanced Raman scattering (SERS) substrates by a facile solution processing method. These SERS substrates can detect analytes down to a few nM. The flexible plastic SERS substrates have also been demonstrated. The annealing temperature dependent conductivity of the nanoparticle films indicated a transition temperature above which high conductivity was achieved. The transition temperature could be tailored to the plastic compatible temperatures by using proper alkylamine as the capping agent. The ultrafast electron relaxation studies of the nanoparticle films demonstrated that faster electron relaxation was observed at higher annealing temperatures due to stronger electronic coupling between the nanoparticles. The applications of these highly concentrated alkylamine capped metal nanoparticle inks for the printable electronics were demonstrated by printing the oleylamine capped gold nanoparticles ink as source and drain for the graphene field effect transistor. Furthermore, the broadband photoresponse properties of the Au and Ag nanoparticle films have been demonstrated by using visible and near-infrared lasers. These investigations demonstrate that these nanoparticle "inks" are promising for applications in printable SERS substrates, electronics, and broadband photoresponse devices. © 2011 The Royal Society of Chemistry.|
|dc.contributor.department||NUS NANOSCIENCE & NANOTECH INITIATIVE|
|Appears in Collections:||Staff Publications|
Show simple item record
Files in This Item:
There are no files associated with this item.
checked on Mar 31, 2020
WEB OF SCIENCETM
checked on Mar 24, 2020
checked on Mar 31, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.