Resolving the source of blue luminescence from alkyl-capped silicon nanoparticles synthesized by laser pulse ablation. Issue 28 (4th July 2016)

• Record Type: Journal Article
• Authors: Dewan, Shalaka; Odhner, Johanan H.; Tibbetts, Katharine Moore; Afsari, Sepideh; Levis, Robert J.; Borguet, Eric
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 28(2016)
• Page Start: 6894
• Page End: 6899
• Publication Date: 2016-07-04
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6tc02283a
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Photoluminescence from alkyl-capped silicon nanoparticles (Si NPs) synthesized by pulsed laser ablation is resolved into two components: narrowband UV emission from the alkyl-capped Si NPs and broadly tuneable (350–500 nm) blue emission associated with a solvent by-product. Abstract : Photoluminescence from alkyl-capped silicon nanoparticles (Si NPs) synthesized by laser ablation of silicon in 1-octene is found to originate from two distinct species: narrowband UV-emitting alkyl-capped Si NPs and broadly tuneable (350–500 nm) emission associated with a solvent by-product. Our results demonstrate the need to effectively separate solvent by-products, a step which is often overlooked in ablation studies, before characterizing the optical properties of ablation-synthesized NPs for luminescence applications.