Performance Study of Thermal Ion-enhanced Solar Thermal Radiation-Photovoltaic Conversion
Solar thermal radiation-photovoltaic(TR-PV)conversion is a very promising photovoltaic(PV)power genera-tion technology due to its flexible structure.The TR-PV converter converts energy from heat to electrons,then photons,and finally back to electrons,which leads to irreversible interconversion losses.For this reason,a new concept of solar thermionic ion-mediated thermal radiation photovoltaic(TRTI-PV)conversion is proposed,where thermionic photons as well as thermionic electrons are released and engaged between the TR and PV ends to minimize the irreversible losses of the electron-photon jumps.The results show that thermionic emission dominates the solar TRTI-PV conversion with mu-tual constraints between the TR and PV components.Although the output power of the TRTI-PV module is 1.67 W/cm2 and 3.63 W/cm2,the output power of the TRTI-PV converter rises to 35.54 W/cm2,drastically lower than that of the TR-PV,at thermal emission bandgap and photovoltaic bandgap of 0.3 eV and 0.2 eV,respectively.At a concentration ratio of 1000,the TRTI-PV converter's solar conversion efficiency is about 34.78%,which is 3.24 times higher than that of a single TR-PV converter.
concentrated solar energythermal radiation-photovoltaicthermoelectric emission
NETL
NSTL
万方数据
