Journal
DALTON TRANSACTIONS
Volume 48, Issue 8, Pages 2574-2581Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8dt04649b
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Funding
- CNPq
- CAPES
- FACEPE
- FINEP [Pronex APQ-0675-1.06/14, INCT-NANOMARCS APQ-0549-1.06/17]
- CNPq [428020/2016-0]
- Materials Science Graduate Program at UFPE
- Chemistry Graduate Program at UFPE
- PNPD-CAPES
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The increasing demand for renewable energy has been promoting a rapid development of photovoltaic technologies. Given this, photoinduced thermal emission is being explored with the aim of improving solar cell performance by converting low-energy IR photons into visible light. Here, we report the light-induced blackbody emission from LnO(2) (Ln = Pr and Tb) as a potential emitter for thermophotovoltaic applications. Lanthanide dioxides display broad IR absorption and a direct optical band gap of 1.49 (PrO2) and 1.51 eV (TbO2). These materials achieve a maximum temperature of similar to 1500 K under a power density excitation of 160 W cm(-2) and display a stable bright light emission. Thermal emission can be tuned from laser power density modulation.
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