Abstract
Needle-shape IrSe 2 microrods, with maximum thickness of 6 μm, maximum width of 17 μm, and 20 mm in length were synthesized by the chemical vapour transport method with ICl 3 as the transporting agent. Energy-dispersive X-ray spectroscopy showed an atomic Ir to Se ratio of 1:(2 − δ), where 0 < δ < 0.09. Scanning electron microscopy showed single crystalline structure for the synthesized IrSe 2. The electrical properties of the IrSe 2 were studied via temperature dependent transport properties measurements in the range of 20–510 K. The thermal band gap was evaluated to be 0.17 eV. Room temperature Hall effect measurement showed p-type semiconducting character for the sample.
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