This invention provides a class of organometallic complexes comprising a tridentate isoquinoline-pyridine-benzene based ligand, a mono-dentate ligand and a platinum (II) center which show high emission quantum efficiency and good thermal stability. This invention also discloses organometallic comple.....
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A novel class of saturated or conjugated dendrimers containing at least one strong .sigma.-donating group coordinated to cyclometalated tridentate gold(III) compounds having the chemical structure depicted by generic formula: ##STR00001## wherein: (a) [Au] is a cyclometalated tridentate gold(III) gr.....
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Fluorescent lamp is a common form of illumination in offices, public areas and even households. However, it is much harder to provide dimmable control for fluorescent lamps when compared with incandescent ones. A new method is now invented in achieving control over dimming function for fluorescent.....
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A driving method for improving luminous efficacy of a light emitting diode (LED), the method comprising: periodically switching a DC current supplied to the LED between a high current level lH and a low current level lL, the low current level lLbeing fixed at zero or raised above zero to produce a D.....
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Organic electroluminescent or organic light emitting diode (OLED) devices are light emitting devices that are based on the passage of current through one or multiple organic thin layers. This invention proposed a new method of treatment of the transparent conducting anode layer which will therefore .....
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