This chapter provides an overview on the road map used to tune the colour and efficiency of organic light emitting devices (OLEDs). A comprehensive introduction to the potential of OLED technology is first provided. Then attention is given on one way to obtain a multi-emission by a single phosphor, making use of platinum (II) complexes as phosphorescent emitters. OLEDs prepared using highly luminescent Pt (II) complexes containing cyclometallating bidentate and terdentate ligands are presented. These complexes with square planar configuration often lead to stacking and formation of luminescent aggregates. A brief description of the nature of these bimolecular exited states is reported. Taking advantage of this behaviour, many types of OLEDs, like White OLED (WOLED), Near-InfraRed OLED (NIROLED), Plant Growth OLED (PGOLED), are shown. Such devices fulfil the requirements to become an important part of 'Green Photonics'.
Tuning the colour and efficiency of OLEDs
Massimo Cocchi
2013
Abstract
This chapter provides an overview on the road map used to tune the colour and efficiency of organic light emitting devices (OLEDs). A comprehensive introduction to the potential of OLED technology is first provided. Then attention is given on one way to obtain a multi-emission by a single phosphor, making use of platinum (II) complexes as phosphorescent emitters. OLEDs prepared using highly luminescent Pt (II) complexes containing cyclometallating bidentate and terdentate ligands are presented. These complexes with square planar configuration often lead to stacking and formation of luminescent aggregates. A brief description of the nature of these bimolecular exited states is reported. Taking advantage of this behaviour, many types of OLEDs, like White OLED (WOLED), Near-InfraRed OLED (NIROLED), Plant Growth OLED (PGOLED), are shown. Such devices fulfil the requirements to become an important part of 'Green Photonics'.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
