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  Scopus ID: 21100926589

Improvement in the Material Properties of Hydrothermally Synthesized WS2 with Increased Drying Temperature

Prarbdh Bhatt, Vipin Kumar, Moti Kumar Jha, and Nilanjan Halderi

Research Article

WS2 is one of the most promising alternatives of 2D materials because of its bandgap energy, excellent electrical and optoelectronic properties. The enhanced carrier confinement due to reduced lateral size of the WS2 quantum dots (QDs) make them promise for applications like bio imaging and photocatalysis. The WS2 QDs generally emit in the blue region of the visible light spectrum. We have prepared bulk WS2 by a facile solution based hydrothermal technique. The as prepared bulk material is dried at 60 °C and 80 °C temperature with varied dwelling time to get powdery WS2 with improved crystal properties. The physical properties of the dried powdery material are investigated by different techniques like XRD and FTIR to understand the improvement in the crystal property of the material with drying temperature. Further, WS2 QDs are produced by mechanically exfoliating the WS2 bulk and the tunable bandgap of the QDs with drying temperature is investigated by UV-Vis spectroscopy. PL from the WS2 QDs with optimized physical properties is also measured to comment on the excitonic behavior of the nanostructures.

Published on: October 15, 2022
doi: 10.17756/nwj.2022-s1-010
Citation: Bhatt P, Kumar V, Jha MK, Halder N. 2022. Improvement in the Material Properties of Hydrothermally Synthesized WS2 with Increased Drying Temperature. NanoWorld J 8(S1): S49-S53.

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