The system uses a perovskite laser cell-thermoelectric (PLC-TE) tandem device, which combines two methods of generating electricity. The perovskite layer converts laser energy into electricity, while the thermoelectric layer recovers some of the resulting heat and turns it into additional power. Latest Videos From Tom's Hardware Watch full video here:To overcome this challenge, Han's team added special nanocrystals to the receiver. As the nanocrystals are poor heat conductors, it allows them to act as a thermal barrier and protect the perovskite and thermoelectric layers. As the propellers spin, airflow passes through these channels and carries excess heat away, helping to keep the system cool.