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

作　　者：MO Jia-qing 莫家庆;蒋静;翟振刚;施福贵;贾振红(School of Information Science and Engineering, Xinjiang University, Urumqi 830046, China The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, China Economy and Development Reform Commission, Urumqi High-tech Industrial Development Zone, Urumqi 830011, China)

机构地区：[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

出　　处：《Optoelectronics Letters》2017年第1期10-12,共3页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.61308120,61575168 and 11264038);the Doctor Startup Project of Xinjiang University(No.BS120122);the Young Talents Project in Xinjiang Uygur Autonomous Region(No.2013731003);the Xinjiang Science and Technology Project(Nos.2015211C262 and 2014211B003)

摘　　要：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.

关 键 词：porous citrate utilized immersion prepare immersed quenching porosity rhodamine spacing 

分 类 号：O657.3[理学—分析化学]