Thermal sensitivity and stability of NaYF4:Yb3+, Er3+ upconversion nanowires, nanorods and nanoplates
Source abstract
Abstract
Abstract In this paper, temperature sensing properties of NaYF4:Yb3+, Er3+ upconversion (UC) nanowires, nanorods and nanoplates were studied compared to their corresponding bulk materials. Heating–cooling cycle tests show that the as-prepared samples have high thermal stability. The natural logarithm of intensity ratio (RHS) between 2H11/2→4I15/2 and 4S3/2→4I15/2 transitions of all the samples shows a good linear relation to the inverse temperature, indicating their potential for temperature sensing applications. Based on the exponential relationship between RHS and temperature, the fitted energy difference (ΔE) of 2H11/2 and 4S3/2 energy levels of Er3+ ions depends on the shapes and sizes of UC samples, which leads to improvements of thermal sensitivity of NaYF4:Yb3+, Er3+ particles with the increase of surface to volume ratios.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Gas Sensing Nanomaterials and Sensors · Ga2O3 and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (14)
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