【摘要】 通过电位阶跃和循环伏安结合现场电感偶合分光光度计（CCD）测量了脉冲激光沉积的四方结构Bi₂O₃薄膜的电致变色性质.结果表明,在波长为630 nm处出现一个明显的吸收峰,Bi₂O₃薄膜电极的着色时间为30s.吸光度-电位谱图表明,当电位在3.5-0.7 V之间变化时,Bi₂O₃薄膜的颜色可明显地呈现由透明到暗棕色的可逆变化,重复次数可达50次,在630 nm测得的着色效率约为15 cm²·C^-1.更多还原

【Abstract】 The electrochromic behaviors of the tetragonal Bi₂O₃ films deposited by pulsed laser deposition at 300℃were investigated by potential step and cyclic voltammetry coupled with an in situ charge-coupled device （CCD） spectrophotometer.The time-resolved absorption spectrum determined by potential step method indicated that the coloration time for Bi₂O₃ film was estimated to be 30 s.In addition,the electrochromic properties determined by cycfic voltammetry showed that this film could exhibit a significantly reversible variation between transparent and dark brown more than 50 times on switching between 3.5 and 0.7 V.The color efficiency at 630 nm was estimated to be 15 cm²·C^-1.更多还原