钨酸盐玻璃电致色效应的研究

Electrochromic Properties of Tungstate Glasses

研究了用双辊急冷法制得的 Li_2O-WO_3系统玻璃和 Li_2O-B_2O_3-WO_3系统玻璃在空气中和电解质中的电致色效应,用 He-Ne 激光测试了加电压后透射光强度随时间的动态变化。认为着色深度与着色速率是由 H^+或 e 的扩散流决定,它们随钨原子数密度的增大而增大。在空气中反转极性引起颜色加深,在电解质中反转极性引起部分褪色,对此现象作出了解释。

In air and electrolyte,electrochromic properties of Li_2O-WO_3 and Li_2O-WO_3-B_2O_3 glasses prepared by rapid-quenching technique have been investigated.The op-tical absorption in the colored glasses and coloring speed are increased with the in-crease of WO_3 content.The diffusion flux of injected protons or electrons dominatesthe coloration.When reversing the polarity in air,the optical absorption increases,and in electrolyte,partial bleaching can be found.