Strain Effect in the Layered MoS2-rGO Heterostructure with Enhanced Performance for Flexible Thermoelectric Applications

Abstract

Engineering the molybdenum disulfide (MoS₂) and reduced graphene oxide hybrid via layer-by-layer stacking is an efficient way to enhance the thermoelectric performance by decoupling the Seebeck coefficient and electrical transport. The fabricated MG achieved maximum of −25.2 μV K^–1 at 325 K, 23.5 S m^–1 at 351 K, and 15.5 nW m^–1 K^–2 at 325 K for the Seebeck coefficient, electrical conductivity, and power factor, respectively. The π–π interactions at the interface of MoS₂-rGO, where the low charge carriers (cold electrons) are scattered without affecting the mobility, simultaneously enhanced the thermoelectric performance through the decoupled Seebeck coefficient and electrical conductivity.