Nanoscale Temperature Measurement Under Optical Illumination Using AlGaN:Er3+ Photoluminescence Nanothermometry

  • Susil BaralEmail author
  • Ali Rafiei Miandashti
  • Hugh H. Richardson
Part of the SpringerBriefs in Applied Sciences and Technology book series (BRIEFSAPPLSCIENCES)


In this chapter, we present working principle and experimental details of AlGaN:Er3+ nanothermometry technique based on Er3+ emission that offers nanoscale temperature measurement and thermal imaging of nanoparticles/nanostructures under optical illumination. A thin film of Al0.94Ga0.06N with embedded Er3+ ions is used as a thermal sensor for nanoscale temperature measurement and thermal imaging of optically excited gold nanostructures under far-field illumination. This thermal sensor film is based on relative photoluminescence intensities of energy transitions from thermally coupled 2H11/2 and the 4S3/2 energy levels to the 4I15/2 energy level of the Er3+ ions. The temperature profile around an optically excited nanostructure can be generated under imaging mode, and a dynamic measurement of temperature can also be performed using this thermal sensor film.


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Copyright information

© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Susil Baral
    • 1
    Email author
  • Ali Rafiei Miandashti
    • 2
  • Hugh H. Richardson
    • 3
  1. 1.Department of Chemistry and Chemical BiologyCornell UniversityIthacaUSA
  2. 2.Department of Chemistry and BiochemistryOhio UniversityAthensUSA
  3. 3.Department of Chemistry and BiochemistryOhio UniversityAthensUSA

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