Enhancement of R6G fluorescence by N-type porous silicon deposited with gold nanoparticles

By the electrochemical anodization method,we achieve the single-layer macroporous silicon on the N-type silicon,and prepare gold nanoparticles with sodium citrate reduction method. Through injecting the gold nanoparticles into the porous silicon by immersion,the fluorescence quenching mechanism of p...

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Published inOptoelectronics letters Vol. 13; no. 1; pp. 10 - 12
Main Author 莫家庆 蒋静 翟振刚 施福贵 贾振红
Format Journal Article
LanguageEnglish
Published Tianjin Tianjin University of Technology 2017
Springer Nature B.V
Subjects
Fluorescence
Gold
Lasers
Nanoparticles
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Porous silicon
Rhodamine 6G
Silicon
Sodium citrate
Submerging
Substrates
Online AccessGet full text
ISSN1673-1905
1993-5013
DOI10.1007/s11801-017-6269-5

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Summary:By the electrochemical anodization method,we achieve the single-layer macroporous silicon on the N-type silicon,and prepare gold nanoparticles with sodium citrate reduction method. Through injecting the gold nanoparticles into the porous silicon by immersion,the fluorescence quenching mechanism of porous silicon influenced by gold nanoparticles is analyzed. Then the macroporous silicon deposited with gold nanoparticles is utilized to enhance the fluorescence of rhodamine 6G（R6G）. It is found that when the macroporous silicon is deposited with gold nanoparticles for 6 h,the maximum fluorescence enhancement of R6G（about ten times） can be realized. The N-type porous silicon deposited with gold nanoparticles can be an excellent substrate for fluorescence detection.
Bibliography:MO Jia-qing, JIANG Jing , ZHAI Zhen-gang, SHI Fu-gui,JIA Zhen-hong （1. School of Information Science and Engineering, Xinjiang University, Urumqi 830046, China 2. The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, China 3. Economy and Development Reform Commission, Urumqi High-tech Industrial Development Zone, Urumqi 830011, China）
porous citrate utilized immersion prepare immersed quenching porosity rhodamine spacing
By the electrochemical anodization method,we achieve the single-layer macroporous silicon on the N-type silicon,and prepare gold nanoparticles with sodium citrate reduction method. Through injecting the gold nanoparticles into the porous silicon by immersion,the fluorescence quenching mechanism of porous silicon influenced by gold nanoparticles is analyzed. Then the macroporous silicon deposited with gold nanoparticles is utilized to enhance the fluorescence of rhodamine 6G（R6G）. It is found that when the macroporous silicon is deposited with gold nanoparticles for 6 h,the maximum fluorescence enhancement of R6G（about ten times） can be realized. The N-type porous silicon deposited with gold nanoparticles can be an excellent substrate for fluorescence detection.
12-1370/TN
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ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-017-6269-5