Journal
OPTICAL MATERIALS
Volume 134, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2022.113050
Keywords
Up-conversion luminescence; Attenuated total reflectance; Surface plasmon wave; Guided wave
Categories
Funding
- Scientific and Techno-logical Developing program of Jilin Province
- Na-tional Natural Science Foundation of China
- 111 Project of China
- [20200401066GX]
- [12274042]
- [D21009]
- [D17017]
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In this paper, a method using Kretschmann ATR structure to enhance the UCL of NaYF4:Yb3+, Er3+ nanoparticles is reported, and the enhancement is achieved through surface plasmon waves and guided waves. The UCL intensity of the nanoparticles under the first-order guided wave mode is 200 times higher than direct excitation. It is also found that the reflected upconverted light spectra vary from red to green with the detection angle of the ATR system.
Up-conversion luminescence (UCL) enhancement of rare earth doped nanoparticles is particularly important and urgently required for biomedical and solar energy conversion applications. In this paper, a method of utilizing Kretschmann attenuated total reflectance (ATR) structure to enhance the UCL of NaYF4: Yb3+, Er3+ nanoparticles is reported, where the enhancement is attributed to surface plasmon waves (SPW) and guided waves. The UCL intensity of up-conversion nanoparticles (UCNPs) under first-order guided wave (TM1) mode is 200 times higher than direct excitation. We also studied the spectra of UCL at different detection angles of the ATR structure and found that the UCL here performs an interesting phenomenon that the reflection upconverted light spectra vary from red to green with the detection angle of the ATR system.
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