New benchmark to improve the photoelectrochemical properties of hematite

Aadesh P. Singh; Ambuj Tripathi; Rohit Shrivastav; Sahab Dass; Vibha R. Satsangi

doi:10.1117/12.793656

9 September 2008 New benchmark to improve the photoelectrochemical properties of hematite

Aadesh P. Singh, Ambuj Tripathi, Rohit Shrivastav, Sahab Dass, Vibha R. Satsangi

Proceedings Volume 7044, Solar Hydrogen and Nanotechnology III; 70440H (2008) https://doi.org/10.1117/12.793656
Event: Solar Energy + Applications, 2008, San Diego, California, United States

Abstract

Modification in the properties of material by swift heavy ion irradiation is an interesting area of research. It provides the researchers a new dimension of introducing desired changes to the behaviour of the material, which largely influence their PEC properties also. This communication describes a study on the swift heavy ion irradiation induced modification in the PEC properties of nanostructured hematite thin films. Thin films of nanostructured α-Fe₂O₃ prepared by spray-pyrolysis were irradiated with Si⁷⁺ ions at fluence ranging from 5x10¹² to 4x10¹³ ions/cm². After characterizing them for structural, morphological and optical parameters, photoelectrochemical response of the irradiated and unirradiated samples of hematite thin films in terms of photocurrent density as a function of different ions fluence, towards the solar splitting of water was studied. It was observed that ion fluence plays an important role in modifying the PEC properties of the material. Sample irradiated with 100 MeV Si⁷⁺ ions at fluence 2x10¹³ ions/cm² exhibited the best photocurrent density.

Citation Download Citation

Aadesh P. Singh, Ambuj Tripathi, Rohit Shrivastav, Sahab Dass, and Vibha R. Satsangi "New benchmark to improve the photoelectrochemical properties of hematite", Proc. SPIE 7044, Solar Hydrogen and Nanotechnology III, 70440H (9 September 2008); https://doi.org/10.1117/12.793656

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