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A sensitive temperature probe based on Er3+-doped GeOx films.
ZANATTA, Antonio Ricardo.
Abstract: The light emission due to Er3+ ions when inserted in a GeOx film was analyzed at different temperatures. The film was prepared by sputtering a combined Ge + Er solid target and the incorporation of oxygen took place by thermal annealing the film under a continuous flow of O2. According to the experimental results, the Er3+- related 2H11/2 -> 4I15/2 and 4S3/2 -> 4I15/2 optical transitions- corresponding to the green region of the visible spectrum of electromagnetic radiation - were highly influenced by the local temperature. Compared with other Er3+-doped materials, the present GeOx:Er film exhibited a rather large 2H11/2-to-4S3/2 energy levels separation, suggesting its potential to act as a very sensitive temperature probe in the ~300-750 K range. Along with the Er3+-related optical emission characteristics, the atomic composition and structure of the GeOx:Er film were also investigated in detail.
Results in Physics
v. 16, p. 102871-1102871-4 - Ano: 2020
Fator de Impacto: 3,042
    @article={002981780,author = {ZANATTA, Antonio Ricardo.},title={A sensitive temperature probe based on Er3+-doped GeOx films},journal={Results in Physics},note={v. 16, p. 102871-1102871-4},year={2020}}