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Micro and Nano Systems Letters
Fig. 2 | Micro and Nano Systems Letters

Fig. 2

From: Multiple ratiometric nanothermometry using semiconductor BiFeO3 nanowires and quantitative validation of thermal sensitivity

Fig. 2

a PL spectra of BFO nanowires for E1, E2, E3, E4 emissions at 300 K and at 438 K. The spectrum shows increase in luminescence intensity with increase in temperature for 2.35 eV (E2) emission, whereas decrease in PL intensity with temperature is observed for other emissions (E1, E3 and E4) (ref. [21]). Inset of a shows room temperature excitation spectrum showing a peak at 3.8745 eV (b) PL spectra of BFO nanowires for E2 emission over the temperature range of 300–438 K. c Intensity of PL spectra plotted as a function of temperature for E1, E2, E3, and E4 emissions. Luminescence intensity increases with an increase in temperature for 2.35 eV (E2) emission, whereas a decrease in PL intensity with temperature is observed for other emissions (E1, E3 and E4)

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