Haider, G. et al.G. et al.HaiderYANG-FANG CHEN2019-12-272019-12-272016https://scholars.lib.ntu.edu.tw/handle/123456789/443020Light-emitting diodes (LEDs) have drawn tremendous potential as a replacement of traditional lighting due to its low-power consumption and longer lifetime. Nowadays, the practical white LEDs (WLED) are contingent on the photon down-conversion of phosphors containing rare-earth elements, which limits its utility, energy, and cost efficiency. In order to resolve the energy crisis and to address the environmental concerns, designing a direct WLED is highly desirable and remains a challenging issue. To circumvent the existing difficulties, in this report, we have designed and demonstrated a direct WLED consisting of a strontium-based metal-organic framework (MOF), {[Sr(ntca)(H2O)2]·H2O}n (1), graphene, and inorganic semiconductors, which can generate a bright white light emission. In addition to the suitable design of a MOF structure, the demonstration of electrically driven white light emission based on a MOF is made possible by the combination of several factors including the unique properties of graphene and the appropriate band alignment between the MOF and semiconductor layer. Because electroluminescence using a MOF as an active material is very rare and intriguing and a direct WLED is also not commonly seen, our work here therefore represents a major discovery which should be very useful and timely for the development of solid-state lighting. © 2016 American Chemical Society.electroluminescence; graphene; light-emitting diode; metal-organic frameworks; natural white light; photoluminescence[SDGs]SDG7Crystalline materials; Electroluminescence; Energy policy; Graphene; Java programming language; Light; Light emission; Lighting; Organic polymers; Organometallics; Photoluminescence; Semiconductor diodes; Environmental concerns; Inorganic semiconductors; Low-power consumption; Metal organic framework; Semiconductor layers; Solid state lighting; White light; White light emission; Light emitting diodesjournal article10.1021/acsnano.6b030302-s2.0-84989193354https://www.scopus.com/inward/record.uri?eid=2-s2.0-84989193354&doi=10.1021%2facsnano.6b03030&partnerID=40&md5=7a4ec7266d6c57cf64ce13679835adf5