Enhanced photoluminescence of organic dyes embedded in sol-gel organosilane thin films

被引:0
|
作者
Floris, Francesco [1 ]
Figus, Cristiana [2 ]
Quochi, Francesco [2 ]
Marabelli, Franco [1 ]
机构
[1] Univ Pavia, Dipartimento Fis, Via Agostino Bassi 6, I-27100 Pavia, Italy
[2] Univ Cagliari, Dipartimento Fis, SP Monserrato Sestu Km 0,700, I-09042 Monserrato, Cagliari, Italy
关键词
Sol-gel; Photoluminescence; Decay time; Organic dye; FLUORESCENCE LIFETIME; REFRACTIVE-INDEX; NANOPARTICLES;
D O I
10.1016/j.optmat.2024.115912
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We investigated photoluminescence properties of Dyomics dyes DY650 and DY831 when incorporated into solid thin films fabricated using two distinct sol-gel precursors, namely, tetraethoxysilane (TEOS) and 3glycidoxypropyltrimethoxysilane (GPTMS). Surprisingly, a significant enhancement in both photoluminescence lifetime and quantum yield was observed in the films derived from GPTMS, contrasting conventional behavior documented in literature for dyes dispersed within solid matrices. This phenomenon is attributed to the unique molecular environment surrounding the dyes in the GPTMS matrix, which was inferred to suppress nonradiative decay channels for the photoexcited dyes. Our findings provide valuable insights into the intricate interplay between dye molecules and their host matrices, shedding light on the potential applications of GPTMS-based systems in enhancing photoluminescence properties for various technological advancements.
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页数:5
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