New copper complex can lead to cheaper OLEDs

Researchers from RIKEN (Japan) developed a new efficient copper complex that can be used to replace Iridium phosphors in OLEDs - and would be much cheaper (copper is about 1/2000 cheaper than Iridium).



The researchers altered the molecular environment in which the copper sites - wrapping each copper ion with a newly designed organic ligand. The ligand forced the copped to become three-coordinate (three bonds to the ligand), rather than the usual four. This caused the efficiency (EQE) of the copper complex to increase dramatically.

The researchers developed a green emitter, and now their plan is to proceed to create red and blue ones as well.

Source, via Nanowerk

Comments

Hi there, 

 

is there any scientific reference you may provide ? ( sci. paper for example ? or authors? ) 

 

thanks 

Here's the original paper : 

http://dx.doi.org/doi:10.1021/ja202965y 

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