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Bright thermal (blackbody) emission of visible light from LnO2 (Ln = Pr, Tb), photoinduced by a NIR 980 nm laser

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Abstract

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 LnO2 (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 ∼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.

Graphical abstract: Bright thermal (blackbody) emission of visible light from LnO2 (Ln = Pr, Tb), photoinduced by a NIR 980 nm laser

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Publication details

The article was received on 23 Nov 2018, accepted on 22 Dec 2018 and first published on 26 Dec 2018


Article type: Paper
DOI: 10.1039/C8DT04649B
Citation: Dalton Trans., 2019, Advance Article

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    Bright thermal (blackbody) emission of visible light from LnO2 (Ln = Pr, Tb), photoinduced by a NIR 980 nm laser

    C. I. Silva Filho, A. L. Oliveira, S. C. F. Pereira, G. F. de Sá, L. L. da Luz and S. Alves, Dalton Trans., 2019, Advance Article , DOI: 10.1039/C8DT04649B

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