中国物理B ›› 2018, Vol. 27 ›› Issue (9): 97301-097301.doi: 10.1088/1674-1056/27/9/097301

所属专题: SPECIAL TOPIC — Nanophotonics

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Selective enhancement of green upconversion luminescence of Er-Yb: NaYF4 by surface plasmon resonance of W18O49 nanoflowers and applications in temperature sensing

Ang Li(李昂), Jin-Lei Wu(吴金磊), Xue-Song Xu(许雪松), Yang Liu(刘洋), Ya-Nan Bao(包亚男), Bin Dong(董斌)   

  1. 1 School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China;
    2 Department of Physics, Dalian Maritime University, Dalian 116026, China;
    3 Key Laboratory of Photosensitive Materials and Device of Liaoning Province, Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, China
  • 收稿日期:2018-05-11 修回日期:2018-07-05 出版日期:2018-09-05 发布日期:2018-09-05
  • 通讯作者: Bin Dong E-mail:dong@dlnu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474046 and 61775024), the Program for Liaoning Innovation Team in University, China (Grant No. LT2016011), the Science and Technique Foundation of Dalian, China (Grant Nos. 2017RD12 and 2015J12JH201), and the Fundamental Research Funds for the Central Universities, China (Grant No. DC201502080203).

Selective enhancement of green upconversion luminescence of Er-Yb: NaYF4 by surface plasmon resonance of W18O49 nanoflowers and applications in temperature sensing

Ang Li(李昂)1,2,3, Jin-Lei Wu(吴金磊)2,3, Xue-Song Xu(许雪松)1,2, Yang Liu(刘洋)3, Ya-Nan Bao(包亚男)2,3, Bin Dong(董斌)3   

  1. 1 School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China;
    2 Department of Physics, Dalian Maritime University, Dalian 116026, China;
    3 Key Laboratory of Photosensitive Materials and Device of Liaoning Province, Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, China
  • Received:2018-05-11 Revised:2018-07-05 Online:2018-09-05 Published:2018-09-05
  • Contact: Bin Dong E-mail:dong@dlnu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474046 and 61775024), the Program for Liaoning Innovation Team in University, China (Grant No. LT2016011), the Science and Technique Foundation of Dalian, China (Grant Nos. 2017RD12 and 2015J12JH201), and the Fundamental Research Funds for the Central Universities, China (Grant No. DC201502080203).

摘要:

The W18O49 nanoflowers with a diameter of 500 nm are prepared by a facile hydrothermal method. The Er-Yb:NaYF4 nanoparticles are adsorbed on the petals (the position of the strongest local electric field on W18O49 nanoflowers). With a 976 nm laser diode (LD) as an excitation source, the selectively green upconversion luminescence (UCL) is observed to be enhanced by two orders of magnitude in Er-Yb:NaYF4/W18O49 nanoflowers heterostructures. It suggests that the near infrared (NIR)-excited localized surface plasmon resonance (LSPR) of W18O49 is primarily responsible for the enhanced UCL, which could be partly reabsorbed by the W18O49, thus leading to the selective enhancement of green UCL for the Er-Yb:NaYF4. The fluorescence intensity ratio is investigated as a function of temperature based on the intense green UCL, which indicates that Er-Yb:NaYF4/W18O49 nanoflower heterostructures have good potential for developing into temperature sensors.

关键词: upconversion, localized surface plasmon resonance, Er-Yb:NaYF4/W18O49, temperature sensing

Abstract:

The W18O49 nanoflowers with a diameter of 500 nm are prepared by a facile hydrothermal method. The Er-Yb:NaYF4 nanoparticles are adsorbed on the petals (the position of the strongest local electric field on W18O49 nanoflowers). With a 976 nm laser diode (LD) as an excitation source, the selectively green upconversion luminescence (UCL) is observed to be enhanced by two orders of magnitude in Er-Yb:NaYF4/W18O49 nanoflowers heterostructures. It suggests that the near infrared (NIR)-excited localized surface plasmon resonance (LSPR) of W18O49 is primarily responsible for the enhanced UCL, which could be partly reabsorbed by the W18O49, thus leading to the selective enhancement of green UCL for the Er-Yb:NaYF4. The fluorescence intensity ratio is investigated as a function of temperature based on the intense green UCL, which indicates that Er-Yb:NaYF4/W18O49 nanoflower heterostructures have good potential for developing into temperature sensors.

Key words: upconversion, localized surface plasmon resonance, Er-Yb:NaYF4/W18O49, temperature sensing

中图分类号:  (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))

  • 73.20.Mf
78.68.+m (Optical properties of surfaces) 65.80.-g (Thermal properties of small particles, nanocrystals, nanotubes, and other related systems) 68.55.-a (Thin film structure and morphology)