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19 November 2003 Yttrium hydride films as switchable mirrors: optical characterization and electronic structure
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Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.531209
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy
Abstract
The development of switchable mirrors based on yttrium hydride thin films is shown. Yttrium is deposited on regular glass under ultra-high vacuum conditions. Upon hydrogen pressure the transition from light-reflecting metal YH2 to transparent insulating YH3 is induced. Surface and optical characterization is performed to improve the deposition and hydrogenation conditions. A good variable transparency is achieved, with transmittance up to 70% in the visible range for the completely hydrogenated sample. The electronic structure of the YH3 phase is calculated by considering strong correlation corrections to the crystal potential. We obtain a gap in the quasiparticle spectrum that agrees with the optical transmittance of the YH3 phase. A prototype device based on these films is proposed.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. M. Sanchez-Lopez, P. Velasquez, R. Castaner, A. Gutierrez, J. Costa-Quintana, and F. Lopez-Aguilar "Yttrium hydride films as switchable mirrors: optical characterization and electronic structure", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.531209
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