Thermal Effects on the Measurement of Photocurrent at Anodic Films on Silver Electrode

Authors

Yuan GU, Dept. of Chem., Fudan Univ., Shanghai 200433, China
Zhi-yu JIANG, Dept. of Chem., Fudan Univ., Shanghai 200433, ChinaFollow

Corresponding Author

Zhi-yu JIANG(zyjiang@fudan.ac.cn)

Abstract

The influence of heat on the photocurrent of Ag electrde in alkaline solution was investigated by measuring photocurrent, photothermal signal and thermal current under the irraiation of laser beams with the wavelengths of 488 nm and 532 nm. It was found the photocurrent atthe Ag₂O film was influenced by the temperature change at the electrode surface under the irradiation of light. During the electrochemical transfer between Ag, Ag₂O and AgO in the anodic filmthe surface temperature changed obviously due to the different absprptance of the surface subrstances.It was suggested by comparing the voltammograms, photocurrent curves and thermalcurrent curves that the anodic photocurrent peak at 0. 37 V and the cathodic photocurrent peak at 0.10 V on the photocurrent cycle curves can be attributed to the temperature rise under the irradiation of light. The photocurrent and the thermal current increased proportionately with the increase of light intensity.

Keywords

Ag electrode, Photocurrent, Thermal current

DOI Link

https://doi.org/10.61558/2993-074X.1436

Publication Date

2001-11-28

Online Available Date

2001-11-28

Revised Date

2001-04-13

Received Date

2001-01-09

Recommended Citation

Yuan GU, Zhi-yu JIANG. Thermal Effects on the Measurement of Photocurrent at Anodic Films on Silver Electrode[J]. Journal of Electrochemistry, 2001 , 7(4): 427-432.
DOI: 10.61558/2993-074X.1436
Available at: https://jelectrochem.xmu.edu.cn/journal/vol7/iss4/4