A Planar Electrochromic Device using WO3 Nanoparticles and a Modified Paper-Based Electrolyte

Proceedings

Sinopoli, Stefano¹  Emanuele, Umberto²  Pereira, Sónia³  Marques, Ana⁴  Santos, Lídia⁵  Igreja, Rui⁶ 

[1] Author to whom correspondence should be addressed.;BioMark-CEB/UM, ISEP—Instituto Superior de Engenharia do Porto, R. Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal;Bioage, Lamezia, 88046 Terme, Italy;CENIMAT/I3N, Departamento de Ciência de Materiais, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa and CEMOP/UNINOVA, Campus da Caparica, 2829-516 Caparica, Portugal;Hovione, Campus do Lumiar, Edifício S, Estrada do Paço do Lumiar, 1649-038 Lisboa, Portugal;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018

关键词: tungsten oxide;    electrochromism;    hydrothermal synthesis;    laser technology;   

DOI  :  10.3390/proceedings2131065

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

Electrochromic devices are increasing its interest in the last decades due to the wide range of applications, from smart windows to biosensors or from smart labels to super-capacitors. So, the development of simple and cost-effective production technologies based on solution process and mask less approach is of great interest. In this work, a new planar and flexible electrochromic device based on tungsten oxide (WO3) nanoparticles with a paper-based modified electrolyte was successfully produced, using a CO2 laser technology for electrodes patterning and hydrothermal synthesis for the nanoparticles production. The devices were fabricated with a paper pad inserted in the sensor area for hydration on time of usage, thus replacing the electrolyte material of a typical electrochromic structure with a multi-layer stack, eliminating leakage problems, easy integration with other devices and enhancing the shelf life of the devices to several months. The produced device presents a low power consumption of only 2.86 μA·cm−2, with a deep blue color and an initial charge modulation of 11.5.

【 授权许可】

CC BY