Efficient LED Light Converter based on Perovskite Nanocrystals for Visible Light Communication

To provide the white light source in a visible light communication (VLC) system, light-emitting diodes (LEDs) are frequently used as light sources that are converted into green, yellow, and red emissions using light converters. In this work, perovskite quantum dots (CH
₃
NH
₃
PbI
₃
) with a photoluminescence quantum yield (PLQY) as high as 90% are synthesized via a facile solution process method and used as the light converter for VLC applications. Through this conversion, the emission light from the LED with a wavelength of 400 nm and full width at half maximum (FWHM) of 25 nm is converted to green light with a wavelength of 530 nm and FWHM of 23 nm.