Resonant enhancement of photoluminescence from dye molecules in lithium niobate substrate using photoinduced silver deposition with concentration dependence

Results in Physics

Min-Hsiung Shih¹  Yuan-Fong Chou Chau²  Muhammad Raziq Rahimi Kooh²  Chung-Ting Chou Chao³  Hao-En Chang³  Tsung Sheng Kao⁴  Pin Chieh Wu⁵  Po-Sheng Huang⁵  Tzyy-Jiann Wang⁶  Hai-Pang Chiang⁷ 

[1] Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan;Centre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Tungku Link, Gadong BE1410, Brunei Darussalam;Department of Optoelectronics and Materials Technology, National Taiwan Ocean University, Keelung 202, Taiwan, ROC;;Department of Photonics &Department of Photonics, National Cheng Kung University, Tainan 70101, Taiwan;Institute of Electro-Optical Engineering, National Taipei University of Technology, Taipei 10608, Taiwan;Research Center for Applied Sciences, Academia Sinica, Taipei 11529, Taiwan;

关键词: Lithium niobate substrate;    Metal nanoparticles;    Photoinduced metal deposition;    Raman signal;    Photoluminescence;   

DOI  :  

来源: DOAJ

【 摘 要 】

This work fabricates a plasmonic lithium niobate substrate with metal nanoparticles (MNPs) to enhance electromagnetic field interaction and diminish lifetime with concentration dependence. The enhanced photoluminescence (PL) from dye molecules in lithium niobate substrate and shortened lifetimes associate with plasmon resonance arising from the metal nanoparticles (MNPs) layers. We experimentally and numerically verified that the surface plasmon coupling between MNPs potentially influences PL reactions. The remarkable enhanced PL of deposited MNPs substrate can be achieved by increasing absorption. The fabricated structure can help tune the surface-enhanced electromagnetic field. The Raman signal of rhodamine 6G dye and PL intensity of DCJTB (4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran) molecules in the fabricated substrate are enhanced 13 times and 10.26 times compared to untreated. Besides, the lifetime is reduced by 22.63%. This work is a perspective method for designing a PL-active lithium niobate substrate using photoinduced metal deposition with concentration dependence.

【 授权许可】

Unknown