An electrolyte-free electrochromic device using aluminum as counter electrode material

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Author(s):	Gusatti, Marivone ; Souza, Daniel A. R. ; Ribeiro, Sidney J. L. ; Nalin, Marcelo Total Authors: 4
Document type:	Journal article
Source:	SOLAR ENERGY MATERIALS AND SOLAR CELLS; v. 260, p. 7-pg., 2023-08-04.
Abstract
In this study, a novel all-solid-state electrochromic device (ECD) free of indium tin oxide (ITO), tungsten(VI) oxide (WO3), and Li+ or any other liquid/gel electrolytes was prepared by a cost-effective and industrially applicable spray coating technique. The device configuration consists of a pre-formed Al-coated glass substrate for use as a counter electrode in the fabrication of an ECD with a glass/Al/Alq3/PEDOT:PSS structure. The fabricated device (2.5 x 4.0 cm2) demonstrated a reversible color change between a light-blue (off) and darkblue (on) state, with good and homogeneous contrast. The ECD started coloring at - 0.5 V and was completely colored at - 2.0 V, showing various tones of blue according to the applied voltages. The coloration efficiency was 174.62 cm2/C and the cycle stability was achieved at least 150 times. (AU)

FAPESP's process:	13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass
Grantee:	Edgar Dutra Zanotto
Support Opportunities:	Research Grants - Research, Innovation and Dissemination Centers - RIDC