Simple fabrication of nanostructured silicon and photoluminescence

Wang, Ke, Wang, Qi and Chao, Yimin ORCID: (2012) Simple fabrication of nanostructured silicon and photoluminescence. Applied Physics A, 109 (2). pp. 437-440. ISSN 0947-8396

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Porous Si (PS) was fabricated simply by electrochemical anodic etching of a Si wafer. By a combination of SEM, EDX and infrared spectrum measurements hydrogen-terminated crystalline Si surfaces were identified. Transparent Si nanocolloids were obtained via thermally-initiated hydrosilation of the hydrogenated Si surfaces reaction with unsaturated 1-undecene. In contrast to weak luminescence in the hydrogenated PS dispersed in toluene, intense luminescence was observed in the Si nanocolloid. In the Si nanocolloid, both strong luminescence and long-term stability can be correlated with alkylated passivation, as formation of Si–C bonds identified in infrared spectrum. Additionally, the oxidation effect was noticeable in affecting the luminescence of nano-Si during the process.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
UEA Research Groups: Faculty of Science > Research Groups > Energy Materials Laboratory
Faculty of Science > Research Groups > Chemistry of Materials and Catalysis
Faculty of Science > Research Groups > Physical and Analytical Chemistry (former - to 2017)
Faculty of Medicine and Health Sciences > Research Centres > Metabolic Health
Depositing User: Users 2731 not found.
Date Deposited: 08 Jan 2013 12:44
Last Modified: 13 Nov 2023 16:47
DOI: 10.1007/s00339-012-7045-9

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