Two become one: How to turn green light blue

(Karlsruher Institut für Technologie (KIT) ) The upconversion of photons allows for a more efficient use of light: two photons are converted into a single photon having higher energy. Researchers at KIT now showed for the first time that the inner interfaces between surface-mounted metal-organic frameworks (SURMOFs) are suited perfectly for this purpose -- they turned green light blue. The result, which is now being published in the Advanced Materials journal, opens up new opportunities for