Harnessing singlet state trapping of organic molecules for optoelectronic devices
A technology of organic molecules and optoelectronic devices, applied in the field of organic pigments as emitters in OLEDs and other optoelectronic devices, can solve problems such as insufficient long-term stability
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[0107] Different examples include loaded organic molecules and counterions. These emitter molecules can preferably be used in light-emitting electrochemical cells (LEECs or LECs), the theoretical construction of which is known to the skilled person. When applying this loaded organic molecule in an OLED, it may be recommendable to use a larger counterion with the same charge, such as (PF 6 ) - , (BF 4 ) - 、[CF 3 SO 2 ] - , single negatively charged hexa-phenylphosphate, single negatively charged tetraphenylborate, etc., instead of smaller counter ions.
[0108] A few examples - Molecules are symmetrically structured on the surface and thus contain no separate D-groups or A-groups on the surface. However, the molecule is polarized in solution and / or by the action of a counterion, leading to a corresponding donor- or acceptor-action.
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