Room Temperature Electrodeposition of Ag3PO4 Films. Issue 5 (1st January 2016)

• Record Type: Journal Article
• Authors: Lu, Qinyan; Chen, Keli; Pan, Wei; Wu, Xiaowen; Lu, Kedan; Xu, Zhude; Liu, Run
• Is Part Of: Journal of the Electrochemical Society. Volume 163:Issue 5(2016)
• Page Start: D206
• Page End: D211
• Publication Date: 2016-01-01
• Subjects: Electrodeposition -- photocurrent -- Semiconductor -- silver phosphate; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0081606jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Ag3 PO4 films were electrodeposited onto indium-tin oxide (ITO) coated glass through electrochemical generation of acid in a stable aqueous solution contained silver ammonia complexes and sodium phosphate at room temperature and pH 10. After the released H + ions lower the local pH at ITO working electrode, Ag + ions were dissociated from silver ammonia complex and then reacted with PO4 3− to form Ag3 PO4 deposits on ITO. The morphologies of electrodeposited Ag3 PO4 films depended on the applied potentials: trisoctahedral like structure obtained at 1.2 V versus Ag/AgCl and tetrahedral structure obtained at 1.6 V versus Ag/AgCl. The absorption spectra of the electrodeposited Ag3 PO4 films were measured and they had direct and indirect band gaps of 2.43 eV and 1.99 eV, respectively. The electrodeposited Ag3 PO4 films produced stable sensitive photocurrent in response to visible light irradiation at pH 7.