Novel Crystal Structure Could Be Used to Build LEDs

The discovery of a one-dimensional crystal structure that is highly photo luminescent could help facilitate the development of novel applications for optoelectronic devices such as LEDs, photovoltaic cells and lasers. The crystal is an organic-inorganic hybrid metal halide perovskite. Its one-dimensional structure enables strong quantum confinement with the formation of self-trapped excited states that give efficient blue-white light emissions. Broadband bluish white-light emissions peaking at 475 nm, with a large full width at half maximum of around 157 nm, were demonstrated for both the bulk and microscale crystals at room temperature