by converting low-energy light into higher-energy wavelengths suitable for generating electricity. In regular photoluminescence, light hits a material and kicks an electron into a higher energy ...

Sometimes called biofluorescence in living things, this phenomenon occurs when an object absorbs high-energy wavelengths of light and re-emits them as lower energy wavelengths. Biofluorescence has ...

This work reports the design of an efficient multiband UC system based on Ln3+/Yb3+-doped core-shell upconversion ...