Electrochromic materials have attracted tremendous attention for high colour efficiency, reflection, transparency with lower-power consumption and potential optoelectronic applications. The current work reports the investigation of the Physico-chemical and localized surface plasmon resonance effect (LSPR) of Ag nanoparticles on the overall properties of WO₃.0.33H₂O thin films and their collective performance towards the enhancement of electrochromic activity. The hexagonal-snowflakes like WO₃.0.33H₂O/ Ag(x%) nanohybrids were synthesized by hydrothermal method, and their thin films were successively fabricated by drop cast come spin coating method. The obtained nanohybrids were characterized by several analytical techniques to study their structural, optical, morphological features and their impact on electrochromic performance. The electrochromic activity of the WO₃.0.33H₂O/Ag(2.5%) thin-film showed significant improvement and observed a large optical modulation of 67.11% at 633 nm with rapid colouration-bleaching time, which is far better compared to WO₃.0.33H₂O/Ag(x%) films. This improvement is credited to enhanced electrical conductivity, quick double insertion/extraction of electrons/ions after the surface modification, large surface area and improved overall properties. Notably, the LSPR effect of Ag nanoparticles supported the intercalation-deintercalation pathways by virtue of accessible ion transport channels at WO₃.0.33H₂O/Ag interface. Different correlation study revealed the importance and co-catalytic impact of Ag nanoparticles in the WO₃.0.33H₂O/Ag(x%) nanohybrids. Overall the improvement in the electrochromic performance of the WO₃.0.33H₂O/Ag(x%) thin films are credited to LSPR effect, tuned physical, chemical and structural properties.

电致变色材料以其高彩色效率，反射性，较低功耗的透明性和潜在的光电应用而引起了极大的关注。当前的工作报道了银纳米颗粒对WO ₃ .0.33H ₂ O薄膜的整体性能及其对增强电致变色活性的综合性能的物理化学和局部表面等离振子共振效应（LSPR）的研究。像WO ₃ .0.33H ₂ O / Ag（x％通过水热法合成了纳米杂化物，并通过流延旋涂法相继制备了薄膜。通过几种分析技术对获得的纳米杂化物进行表征，以研究其结构，光学，形态特征及其对电致变色性能的影响。WO ₃ .0.33H ₂ O / Ag（2.5％）薄膜的电致变色活性显示出显着改善，并在633 nm处观察到67.11％的大光调制，并具有快速的脱色时间，这比WO更好。₃ .0.33H ₂ O / Ag（x％）电影。这种改进归因于增强的电导率，表面改性后电子/离子的快速双重插入/提取，大表面积和改善的整体性能。值得注意的是，Ag纳米粒子的LSPR效应通过在WO ₃ .0.33H ₂ O / Ag界面上可及的离子传输通道支持了嵌入-脱嵌途径。不同的相关性研究揭示了Ag纳米粒子在WO ₃ .0.33H ₂ O / Ag（x％）纳米杂化物中的重要性和助催化作用。总体而言，WO ₃ .0.33H ₂ O / Ag（x％）薄膜归因于LSPR效应，调整的物理，化学和结构特性。