Effect of ion irradiation on nanoscale TiS2 systems with suppressed Titania phase

24th Condensed Matter Days National Conference

Hazarika, Saurabh J.^1 ; Mohanta, Dambarudhar^1 ; Tripathi, A.^2 ; Kanjilal, D.^2

Dept. of Physics, Nanoscience, Soft Matter Laboratory Tezpur University, Napaam

784028, India^1

Inter University Accelerator Centre, P.O. Box 10502, Arana Asaf Ali Marg, New Delhi

110067, India^2

关键词: High carrier mobility;    Irradiated films;    Irradiated samples;    Spectroscopic technique;    Swift heavy ion irradiation;    Titanium disulfide;    Transition metal dichalcogenides;    Tunable Band-gap;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/765/1/012007/pdf
DOI  :  10.1088/1742-6596/765/1/012007

来源: IOP

【 摘 要 】

Titanium disulfide (TiS2), being an important of the transition metal dichalcogenide, (TMDC) family, has drawn numerous interest owing to exhibition of tunable band gap as well as high carrier mobility. In this work, we highlight preparation of TiS2nanopowder with minimal TiO2content and also demonstrate modified properties upon swift heavy ion irradiation on TiS2nanoparticles dispersed PVA films. Different properties of the irradiated samples have been characterized through diffraction, microscopic and spectroscopic techniques. As a result of irradiation, due to agglomeration of particles, the grain size is found to increase. We could also observe a red shift after irradiation with increasing fluence, leading to easy flow of electron from valence to conduction band, which shows that conduction of electrons is more in case of irradiated films compared to the pristine one and thus there may be a possibility of using the irradiated samples in various optoelectronic devices.