Abstract

Upconversion nanoparticles (UCNP) were used for thermometry on the nanoscale based on the high temperature sensitivity (SR ~ 1.4 % K−1) of upconversion luminescence. The performance of the UCNP was improved using Nd3+ as co-dopant utilizing the cascade sensitization mechanism in tri-doped UCNP.

© 2015 Optical Society of America

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