Boosting Photo-thermo-electric Conversion via a Donor-Acceptor Organic Cocrystal Strategy

The inaugural instance of photo-thermo-electric conversion has been demonstrated based on the donor-acceptor organic cocrystal strategy due to its unique advantages. Notably, the selected cocrystal exhibits excellent broad solar absorption (200-2500 nm) and high near-infrared photothermal conversion efficiency. Combining organic cocrystals and thermoelectric devices upon 1 sun results in an exceptional open circuit voltage (0.427 V) and output power density (2.21 W.m(-2)), which is significantly better than traditional photothermal conversion materials. The fusion of organic cocrystals and high-output power density thermoelectric devices can offer a promising solar-based photo-thermo-electric conversion technology for outdoor portable power generation and remote rural areas.