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

被引：10

作者：

Katta, Venkata Seshaiah ^{[1
]}

Velpandian, M. ^{[2
]}

Chappidi, Vishnuvardhan Reddy ^{[1
]}

Ahmed, Md Soif ^{[1
]}

Kumar, Abhinav ^{[3
]}

Asthana, Saket ^{[3
]}

Meduri, Praveen ^{[2
]}

Raavi, Sai Santosh Kumar ^{[1
,4
]}

机构：

[1] Indian Inst Technol Hyderabad, Dept Phys, Ultrafast Photophys & Photon Lab, Kandi 502285, Telangana, India

[2] Indian Inst Technol Hyderabad, Dept Chem Engn, Kandi 502285, Telangana, India

[3] Indian Inst Technol Hyderabad, Dept Phys, Adv Funct Mat Lab, Kandi 502285, Telangana, India

[4] Indian Inst Technol Hyderabad, Dept Climate Change, Kandi 502285, Telangana, India

来源：

MATERIALS LETTERS | 2021年 / 302卷

关键词：

PEC water-splitting; Electrochemical impedance spectroscopy (EIS); Er-doped TiO2  photoanode; TIO2; ARRAYS;

D O I：

10.1016/j.matlet.2021.130297

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The origin of enhanced performance of properties of erbium (Er3+)-doped TiO2 photoanodes used in photoelectrochemical 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 mu A-cm-2) at 1.2 V vs RHE potential which is approximate to 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.

引用

页数：5

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