Stacking multiple connecting functional materials in tandem organic light-emitting diodes.

ABSTRACT: Tandem device is an important architecture in fabricating high performance organic light-emitting diodes and organic photovoltaic cells. The key element in making a high performance tandem device is the connecting materials stack, which plays an important role in electric field distribution, charge generation and charge injection. For a tandem organic light-emitting diode (OLED) with a simple Liq/Al/MoO₃ stack, we discovered that there is a significant current lateral spreading causing light emission over an extremely large area outside the OLED pixel when the Al thickness exceeds 2 nm. This spread light emission, caused by an inductive electric field over one of the device unit, limits one's ability to fabricate high performance tandem devices. To resolve this issue, a new conn

SUBMITTER: Zhang T 

PROVIDER: S-EPMC5320488 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature