Accelerated degradation studies on electrochromic switchable mirror glass based on magnesium–nickel thin film in simulated environment
Accelerated degradation studies on electrochromic switchable mirror glass based on magnesium–nickel thin film in simulated environment
复制标题
模拟环境下镁镍薄膜电致变色调光镜玻璃的加速降解研究
DOI：
10.1016/j.solmat.2010.05.034
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发表时间：
2010
影响因子：
6.9
通讯作者：
K. Yoshimura
中科院分区：
文献类型：
--
作者：
K. Tajima;Y. Yamada;M. Okada;K. Yoshimura
电致变色可切换镜面玻璃有望在新的节能窗户中实现，因为它可以简单地通过施加电压在反射和透明状态之间切换。在其反射状态下，它可以有效地控制进入房间的太阳辐射。然而，传统的窗户经常受到环境因素如温度和湿度的影响。在这项工作中，我们研究了环境对反射镜的光开关特性的影响。在加速退化研究中，当镜子保持在由恒温器/加湿器浴控制的高温和高相对湿度的模拟环境中时，其光学开关特性退化。在30°C的温度和80%的相对湿度下保持34天后，镜子从未显示出其光学开关特性。此外，表面粗糙度增加到Ra=13.1nm，由于Mg 4 Ni薄膜的表面层的降解。通过X射线光电子显微镜测定，该层转变为氧化物和氢氧化物的非金属状态。我们证实了镜子受到环境的显著影响，特别是大气中的高相对湿度，这导致镜子迅速退化。
Electrochromic switchable mirror glass is expected to be implemented in new energy-saving windows, as it can switch between reflective and transparent states simply through an applied voltage. In its reflective state, it can effectively control the solar radiation coming into a room. However, conventional windows are often affected by environmental factors such as temperature and humidity. In this work, we investigated the effects of the environment on the optical switching properties of the mirror. In accelerated degradation studies, when the mirror was kept in a simulated environment with high temperature and high relative humidity controlled by a thermostat/humidistat bath, its optical switching properties degraded. After being kept for 34 days at a temperature of 30°C and a relative humidity of 80%, the mirror never showed its optical switching property. Moreover surface roughness increased up to Ra=13.1nm, due to the degradation of the surface layer of the Mg4Ni thin film. The layer changed into a non-metallic state of oxide and hydroxide, as determined by the X-ray photoelectron microscopy. We confirmed that the mirror was significantly affected by the environment, especially by high relative humidity in the atmosphere, which caused rapid degradation of the mirror.