resumo
The energy efficiency of buildings can be significantly improved through the use of renewable energy sources. Luminescent solar concentrators (LSCs) appear to be a solution for integrating photovoltaic (PV) devices into the structure of buildings (windows, for instance) to enable low-voltage devices to be powered. Here, we present transparent planar and cylindrical LSCs based on carbon dots in an aqueous solution and dispersed in organic-inorganic hybrid matrices, which present photoluminescent quantum yield values up to 82%, facilitating an effective solar photon conversion. These LSCs showed the potencial for being incorporated as building windows due to an average light transmittance of up to ∼91% and color rendering index of up to 97, with optical and power conversion efficiency values of 5.4 ± 0.1% and 0.18 ± 0.01%, respectively. In addition, the fabricated devices showed temperature sensing ability enabling the fabrication of an autonomous power mobile temperature sensor. Two independent thermometric parameters were established based on the emission and the electrical power generated by the LSC-PV system, which could both be accessed by a mobile phone, enabling mobile optical sensing through multiparametric thermal reading with relative sensitivity values up to 1.0% °C−1, making real-time mobile temperature sensing accessible to all users. © 2023 RSC.
categoria
Carbon; Conversion efficiency; Energy efficiency; organic-inorganic materials; Renewable energy resources; Solar concentrators; Solar power generation; Temperature sensors; Carbon dots; Low-voltage devices; Luminescent solar concentrators; Organic/Inorganic hybrids; Photovoltaic devices; Photovoltaics; Power; Renewable energy source; Temperature sensing; Use of renewable energies; Luminescence
autores
Correia S.F.H.; Fu L.; Dias L.M.S.; Pereira R.F.P.; de Zea Bermudez V.; André P.S.; Ferreira R.A.S.
nossos autores
