Moreover, we make the devices with double emitting zone by doping 1wt% DCJTB to verify the NPB: rubrene layer near the interface of NPB: rubrene/Alq3: rubrene was the dominant emitting zone.

• 而且我们利用DCJTB红光染料作为检测剂，确证了对于双发光区梯度掺杂器件，在靠近NPB:rubrene/Alq3: rubrene 界面处的 NPB:rubrene 层是主要的发光区的结论。