SURMOF Devices Based on Heteroepitaxial Architectures with White‐Light Emission and Luminescent Thermal‐Dependent Performance

Abstract A new set of Ln‐MOF (lanthanide‐metal‐organic framework) thin films, known as Ln‐SURMOFs (surface‐supported MOFs), is fabricated with a layer‐by‐layer, in order to generate solid‐state white‐lighting devices. A three‐component approach is carried out for a rational combination of red, green, and blue (RGB) emitting Eu 3+ , Tb 3+ , and Gd 3+ containing layers in order to achieve white‐light emission. The Ln‐SURMOFs are fully characterized by powder X‐ray diffraction, infrared reflection–absorption spectroscopy, scanning electron microscopy, and photoluminescence spectroscopy (excitation‐emission and chromaticity determination according to Commission International de l'Eclairage, CIE). The devices show CIE x , y coordinates of almost ideal white light (0.331, 0.329), as well as a correlated color temperature of 5570 K. Besides, the temperature dependent performance of the RGB‐SURMOFs is studied at room temperature and at 77 K.