WO 3 electrodes by spray pyrolysis for photoelectrochemical applications: impact of W precursor and Cl incorporation

Key Points

• This study aims to investigate the effects of W precursor and Cl incorporation on the performance of WO3 electrodes in photoelectrochemical applications.
• Conducted long-term chronoamperometry under AM 1.5 irradiation
• Evaluated WO3 films at 1.4 V vs. Ag/AgCl
• Performed EDS analysis to examine composition and impurities
• Photocurrent decreases over time under irradiation
• Decrease attributed to oxidative exhaustion of Cl-rich areas in WO3 films
• EDS analysis confirmed the presence of chlorine in the films