lynas obtained a licence to operate in china !, page-38

Jantimot,

Sigh...

ok, lets do it your way..

I Went to a wikipage

http://en.wikipedia.org/wiki/OLED

spent about 2 min's scanning the page until I cam across...

Iridium complexes

(Typically, a polymer such as poly(n-vinylcarbazole) is used as a host material to which an organometallic complex is added as a dopant. Iridium complexes[42] such as Ir(mppy)3[40] are currently the focus of research, although complexes based on other heavy metals such as platinum[41] have also been used)



You might want to google Iridium before telling me yet again that most OLED's do not use any rare earths

;)