"Albrecht,Ken; Matsuoka,Kenichi; Yokoyama,Daisuke;  Sakai,Yoshiya; Nakayama,Akira; Fujita,Katsuhiko; Yamamoto,Kimihisa","Thermally activated delayed fluorescence OLEDs with fully solution processed organic layers exhibiting nearly 10% external quantum efficiency",,"Chem. Commun.",,"Vol. 53","  16","page 2439-2442",2017,Feb.