Lanthanides β-diketonate complexes as energy-efficient emissive materials: A review

In the preceding decade, the metal complexes of lanthanide ions with light harvesting organic chromophores have garnered intensive and greater attention due to their marvelous performance in various advanced fields. Researches in the field of organic compounds that sensitize the luminescence phenomenon in lanthanides enforce the advancement in the preparation of novel lanthanide compounds. Better emission properties, fine color gamut and high luminescent efficiency of lanthanide complexes makes them a suitable material for electroluminescent display devices and solid state lighting. Such complexes are extensively used to manufacture optoelectronic gadgets which show occasions to conquer energy-pertinent issues. In this review, molecular structure and spectroscopic characteristic data of lanthanide complexes as an emanating layer in organic light-emitting diodes (OLEDs) have been represented systematically. The design principles, methods of device fabrication and various characterization techniques for OLEDs are described. Electroluminescent devices based on the lanthanide complexes have gathered much awareness and possess various applications in efficient energy displays, solid-state lighting and the automotive sector. The immense review on OLEDs presumes that our current lighting network can be supplanted with OLEDs, an energy saving lighting innovation.