Influence of mesoporous silicon preparation condition on silver clustering and SERS enhancement

Abstract

Mesoporous Si samples, prepared by anodisation technique with different current densities (0.5–40 mA/cm2), were silver coated by using immersion plating into 10–2 and 10–3 m AgNO3 solutions. It was shown that different porous structures yield formation of different Ag crystals on the surface of mesoporous Si for the same immersion conditions. The effect of immersion time on the morphology of Ag crystals and the corresponding surface‐enhanced Raman spectroscopy (SERS) activity were monitored by using the rhodamine 6G dye molecule. A strong difference in the enhancement factor of the SERS signal in the silver‐clustered mesoporous silicon in comparison with that in crystalline silicon was found. It was shown that respectable enhancement of the SERS substrates with detection limits of 10−9 m rhodamine 6G is possible to produce by optimisation of anodisation current, concentration of AgNO3 and silver crystals’ growth time. Copyright © 2016 John Wiley & Sons, Ltd.

Recent advances in linear and non‐linear Raman spectroscopy. Part XI

“…Mikac et al investigated the influence of a mesoporous silicon preparation on silver clustering and SERS enhancement. They were able to show that respectable enhancement of the SERS substrates with detection limits of 10 −9 M rhodamine‐6G is possible to produce, by optimization of anodisation current, concentration of AgNO 3 and the growth time of silver crystals . Tang and co‐workers used an efficient pen‐on‐paper drawing‐fabrication method of a multifarious nanoplasmonic platform on PLLA paper to optimize SERS performance.…”

“…The Ninth International Conference on Advanced Vibrational Spectroscopy (ICAVS-9) was held in Victoria, British Columbia, Canada, from June [11][12][13][14][15][16]2017. The ICAVS conference series consists of meetings held biennially starting with ICAVS-1 in Turku, Finland, in 2001 and continuing with conferences in Nottingham, England, (ICAVS-2, 2003); Delavan, Wisconsin, USA, (ICAVS- 3,2005); Corfu, Greece, (ICAVS-4, 2007); Melbourne, Year Raman spectroscopy SERS "Biological" OR "biomedical" "Nanoparticles" OR "nanotubes" OR "graphene" "Non-linear" OR "time-resolved" "Art" OR "archaeology" "Resonance"…”

“…They were able to show that respectable enhancement of the SERS substrates with detection limits of 10 −9 M rhodamine-6G is possible to produce, by optimization of anodisation current, concentration of AgNO 3 and the growth time of silver crystals. [16] Tang and coworkers used an efficient pen-on-paper drawing-fabrication method of a multifarious nanoplasmonic platform on PLLA paper to optimize SERS performance. Their results provide an efficient strategy to produce optimized SERS substrates with multiple plasmonic nanoparticles.…”

“…[134] Lv et al investigated Raman scattering from phonons and electronic excitations in UO 2 with different oxygen isotopes. In particular, they compared phonons and electronic excitations of UO 2 with different oxygen isotopes ( 16 O, 18 O); two purely electronic excitations at 4,162 and 5,778 cm −1 have been documented by their limited shift, when 16 O is replaced by 18 O. [135] Mishra and co-workers probed charge carrier compensation in high energy ion irradiated III-V semiconductor by Raman spectroscopy and Hall measurements.…”

Prof. Dr Dr h.c. Wolfgang Kiefer An appreciation of Wolfgang Kiefer on the occasion of his 75th birthday

“…These contributions submitted by scientists from several continents to JRS nicely feature a diverse range of Raman spectroscopic approaches and their broad applicability. Many of the manuscripts deal with SERS, others cover topics such as instrumental developments and the application of Raman spectroscopy on biomolecular systems and materials …”