Sol-gel coatings for optoelectronic devices

Cesar O. Avellaneda; Marcelo A. Macedo; Aariovaldo O. Florentino; Michel Andre Aegerter

doi:10.1117/12.185396

9 September 1994 Sol-gel coatings for optoelectronic devices

Cesar O. Avellaneda, Marcelo A. Macedo, Aariovaldo O. Florentino, Michel Andre Aegerter

Proceedings Volume 2255, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIII; (1994) https://doi.org/10.1117/12.185396
Event: Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIII, 1994, Freiburg, Germany

Abstract

Nb₂O₅ prepared by a sol-gel process in form of coatings and aerogels are new materials which present interesting properties: (a) the coatings present electrochromic properties and exhibit a blue coloration under Li⁺ insertion with 100% reversible variation of the optical transmission in the visible and near infrared range between 80% and 20% and have a high chemical stability (tested up to 2000 cycles), (b) they are semiconductor and present a photoelectric effect when illuminating in the UV region ((lambda) < 360 nm). These films are therefore very promising to be used in electrochromic devices, as electrodes for photoelectrochemical purpose and the development of nanocrystalline solar cell, and (c) when prepared in aerogel form, the high BET surface area of the powders is a promising asset to use these new materials for catalytic purposes.

Citation Download Citation

Cesar O. Avellaneda, Marcelo A. Macedo, Aariovaldo O. Florentino, and Michel Andre Aegerter "Sol-gel coatings for optoelectronic devices", Proc. SPIE 2255, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIII, (9 September 1994); https://doi.org/10.1117/12.185396

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