Compound and polymer of coordination capable of emitting white light

New organometallic compound that, following excitation in the ultraviolet region, is able alone to emit white light at room temperature.

Title of the patent Compound and polymer of coordination capable of emitting white light
Thematic area Chemistry and biotechnology
Ownership Alma Mater Studiorum - Università di Bologna
Inventors Dario Braga, Lucia Maini, Paolo Pio Mazzeo
Protection Italy
Licensing status Available for licensing agreement
Keywords Single phase white emitter, coordination polymer, copper, OLED, WOLED
Filed on May 15, 2014

OLEDs represent a real revolution in the field of displays and solid state lighting.

The most important challenge is to build OLED devices that can get a white-colour light, which would have a great impact on the construction of low energy-requiring lighting systems in the solid state.

Such devices are built up by exploiting the simultaneous emission in complementary spectral range (eg. RGB) by more complexes which are, unfortunately, based on expensive metals such as iridium, platinum or osmium increasing production costs as well as a practical difficulty of realizing the device itself.

The invention ensures a kind of light emission, at the usage-temperature of an OLED device, of a white light derived from a single crystalline phase.

The method allows to build up a White-OLED in a more simple way from the engineering point of view, with a consequent reduction of production costs.

The crystalline phase is based on a coordination polymer based on copper, which definitely is a metal less expensive than those widely used in the actual fabrication.