Photo-Thermoelectric Conversion and Photothermal Imaging Using 2d/3d Res2Carbon Framework with Enhanced Photon Harvesting

Solar energy is a promising renewable energy with the potential to the sustainable development of the world. Efficient photo-thermal conversion is essential for harvesting and conversion of solar energy, leading to the exploration and design of efficient photothermal materials. Herein, we propose a general strategy for prepare 2D/3D TMDs@carbon framework (ReS 2 @C) photothermal material, which is broadband light absorption that enables desired efficient solar-thermal conversion. A small TE module of 4×4 cm 2 with annealed ReS 2 @C shows increasing open-circuit voltage under solar illumination, reaching the maximum value of 136.3 mV. To demonstrate the practical photo-thermoelectric conversion application, 20 TE modules were connected in series, which can produce a maximum open-circuit voltage of 2.12 V (~66.25 V/m 2 ) to light up a red light-emitting diodes (LED) under natural sunlight. Moreover, we find that the temperature of the annealed ReS 2 @C powder sharply increased in a short time under the Near-Infrared (NIR) illumination (>800 nm), which indicated a potential application in photothermal imaging and photothermal cancer therapy field