Solar selective absorbing coating

太阳能选择性吸收涂层

Abstract

The invention relates to the technical field of solar energy and discloses a solar selective absorbing coating. The solar selective absorbing coating comprises a metallic reflective layer and a semiconductor absorption layer formed on the metallic reflective layer, wherein the metallic reflective layer is prepared from Al, and the semiconductor absorption layer is prepared from Ge. According to the solar selective absorbing coating, the advantage that a Ge semiconductor is steep in energy band cutoff and has little adverse effect on the low infrared emissivity of metal Al is effectively exerted, so that a solar-system heat collector can absorb solar spectra to the maximum and effectively inhibit infrared radiation, and the limitations to the high-temperature application of the traditional selective absorbing coatings are broken through.
本发明涉及太阳能技术领域,公开了一种太阳能选择性吸收涂层。本发明中,包括金属反射层和形成在金属反射层上的半导体吸收层,金属反射层为Al,半导体吸收层为Ge。本发明有效发挥Ge半导体能带截止陡以及对Al金属低红外发射率负面影响小的优势,使得太阳能系统集热器最大限度吸收太阳能光谱,并有效的抑制红外辐射,突破了传统选择性吸收涂层高温应用的局限。

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    CN-105506554-AApril 20, 2016电子科技大学一种可见光/红外波段纳米光学吸收涂层及其制备方法