Mouratis Kyriakos, Tudose Ioan Valentin, Bouranta Andrianna, Pachiu Cristina, Romanitan Cosmin, Tutunaru Oana, Couris Stelios, Koudoumas Emmanouel, Suchea Mirela
Center of Materials Technology and Photonics, School of Engineering, Hellenic Mediterranean University, 71410 Heraklion, Crete, Greece.
Department of Electrical and Computer Engineering, School of Engineering, Hellenic Mediterranean University, 71410 Heraklion, Crete, Greece.
Nanomaterials (Basel). 2020 Nov 30;10(12):2397. doi: 10.3390/nano10122397.
Nanostructured electrochromic VO thin films were prepared using spray pyrolysis technique growth at a temperature of 250 °C using air-carrier spray deposition, starting from ammonium metavanadate precursor in water, followed by annealing at 400 °C in O atmosphere for 2 h. The VO films were characterized by X-ray diffraction, scanning electron microscopy, and Raman spectroscopy, and their electrochromic behavior was studied using optical spectroscopy and cyclic voltammetry in both the as-deposited and postannealing case. The studies showed that the simple, cost -effective, suitable for large area deposition method used can lead to an interesting surface structuring with large active surface properties suitable for electrochromic applications. Further studies for growth optimization and improvements of films properties and stability are to be performed.
采用喷雾热解技术，以偏钒酸铵为前驱体，在水中通过空气载体喷雾沉积法，于250℃的温度下生长纳米结构的电致变色VO薄膜，随后在400℃的氧气气氛中退火2小时。通过X射线衍射、扫描电子显微镜和拉曼光谱对VO薄膜进行了表征，并在沉积态和退火后分别利用光谱学和循环伏安法研究了它们的电致变色行为。研究表明，所采用的这种简单、经济高效且适用于大面积沉积的方法能够产生具有适合电致变色应用的大活性表面特性的有趣表面结构。还需进一步开展生长优化以及薄膜性能和稳定性改进方面的研究。
