About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage VII
|
Presentation Title |
Metal Dichalcogenide Based Planner Thermoelectric Generator for Efficient Waste Heat Harvesting |
Author(s) |
Sangram Keshari Pradhan, Gilbert Kogo, Messaoud Bahoura |
On-Site Speaker (Planned) |
Sangram Keshari Pradhan |
Abstract Scope |
Large area highly crystalline MoS2 and WS2 thin films were successfully grown on different substrates using sputtering technique. Structural, morphological and thermoelectric properties of MoS2, and WS2 films have been investigated systematically to fabricate high-efficient thermal energy harvesting devices. XRD data revealed that crystallites of MoS2 and WS2 films are highly crystalline and oriented in 00l plane Interestingly, MoS2 films also display low thermal conductivity at room temperature and strongly favors achievement of higher thermoelectric figure of merit value of up to 1.98. Raman spectroscopy data shows two distinct MoS2 vibrational modes at 380 cm-1 for E12g and 410 cm-1 for A1g. Thermoelectric transport studies further demonstrated that MoS2 films show p-type thermoelectric characteristics, while WS2 is an n-type material. We demonstrated high efficient pn-junction thermoelectric generator device for waste heat recovery and cooling applications. |
Proceedings Inclusion? |
Planned: |