Optics Express · 2010 · 122 citations · 22 references
EngineeringMaterials EngineeringMaterials ScienceOptical MaterialsOptoelectronicsPhotonicsLuminescent MaterialsOptoelectronic DevicesOptoelectronic MaterialsPhotovoltaic DevicesSolar Cell MaterialsSolar CellsCrystalline SiliconCrystalline Silicon Solar CellsDownconversion LuminescenceEnergy TransferEnergy Transfer ProcessesQuantum CuttingSilicon Solar CellsThermalization
Yb(2+) and Yb(3+) co-activated luminescent material that can cut one photon in ultraviolet and visible region into multi NIR photons could be used as a downconversion luminescent convertor in front of crystalline silicon solar cell panels to reduce thermalization loss of the solar cell. After a direct excitation of Yb(2+) ions, an intense Yb(3+) luminescence is observed based on a cooperative energy transfer process. The energy transfer process is discussed according to the dependence of Yb(3+) luminescence intensity on the excitation power and the ambient temperature.
22