Bianchi C, Marques A C, da Silva R C, Calmeiro T, Ferreira I
CENIMAT/I3N, Department of Materials Science, NOVA School of Science and Technology, Largo da Torre, 2829-516, Caparica, Portugal.
IPFN-IST/UL, Instituto de Plasmas E Fusão Nuclear, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066, Bobadela, Portugal.
Sci Rep. 2021 Dec 21;11(1):24313. doi: 10.1038/s41598-021-03766-y.
A new concept of oxide-metal-oxide structures that combine photothermoelectric effect with high reflectance (~ 80%) at wavelengths in the infrared (> 1100 nm) and high transmittance in the visible range is reported here. This was observed in optimized ITO/Ag/ITO structure, 20 nm of Silver (Ag) and 40 nm of Indium Tin Oxide (ITO), deposited on Aluminum doped Zinc Oxide (AZO) thin film. These layers show high energy saving efficiency by keeping the temperature constant inside a glazed compartment under solar radiation, but additionally they also show a photothermoelectric effect. Under uniform heating of the sample a thermoelectric effect is observed (S = 40 mV/K), but when irradiated, a potential proportional to the intensity of the radiation is also observed. Therefore, in addition to thermal control in windows, these low emission coatings can be applied as transparent photothermoelectric devices.
本文报道了一种新型的氧化物-金属-氧化物结构概念，该结构在红外波长（>1100 nm）下将光热效应与高反射率（约80%）相结合，并在可见光范围内具有高透射率。这一现象在优化的ITO/Ag/ITO结构中被观察到，该结构由20 nm的银（Ag）和40 nm的氧化铟锡（ITO）沉积在铝掺杂氧化锌（AZO）薄膜上构成。这些层通过在太阳辐射下保持玻璃隔间内的温度恒定，展现出较高的节能效率，但此外它们还表现出光热效应。在样品均匀加热的情况下，会观察到热电效应（S = 40 mV/K），而当受到辐射时，还会观察到与辐射强度成正比的电势。因此，除了用于窗户的热控制外，这些低发射涂层还可作为透明光热电器件使用。
