Er3+ doped titania photoanode for enhanced performance of photo-electrochemical water splitting devices

Katta, Venkata Seshaiah and Velpandian, M. and Chappidi, Vishnuvardhan Reddy and Ahmed, Md Soif and Kumar, Abhinav and Asthana, Saket and Meduri, Praveen and Raavi, Sai Santosh Kumar (2021) Er3+ doped titania photoanode for enhanced performance of photo-electrochemical water splitting devices. Materials Letters, 302. p. 130297. ISSN 0167577X

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Abstract

The origin of enhanced performance of properties of erbium (Er3+)-doped TiO2 photoanodes used in photo-electrochemical cell (PEC) water-splitting devices and power-conversion efficiency in DSSC devices is presented. Particularly, the dielectric measurements of Er3+-TiO2 conclude that the optimised concentration of Er (0.2% mol)-TiO2 has a better conductivity compared to undoped TiO2. The fabricated PEC devices with Er (0.2% mol)-doped TiO2 photoanode exhibited the higher current density of (9 μA-cm−2) at 1.2 V vs RHE potential which is ≈50% higher than that measured for PEC with undoped-TiO2. This enhancement is corroborated with the EIS measurements presenting lower charge transfer resistance values for devices with Er (0.2% mol)-TiO2.

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IITH Creators:

IITH Creators	ORCiD
Katta, Venkata Seshaiah	UNSPECIFIED
Velpandian, M.	UNSPECIFIED
Chappidi, Vishnuvardhan Reddy	UNSPECIFIED
Ahmed, Md Soif	UNSPECIFIED
Kumar, Abhinav	UNSPECIFIED
Asthana, Saket	UNSPECIFIED
Meduri, Praveen	UNSPECIFIED
Raavi, Sai Santosh Kumar	UNSPECIFIED