Highly efficient top-emission organic light-emitting diode on an oxidized aluminum anode

Lee, Jae-Jin1; Li, Peicheng1; Kung, Hao-Ting1; Lu, Zheng-Hong1,2,3

2019-04-14

10.1063/1.5092979

JOURNAL OF APPLIED PHYSICS   影响因子和分区

0021-8979

1089-7550

In today's manufacturing of organic light-emitting diode on silicon for microdisplay technologies, a top-emitting OLED (TEOLED) is required to be fabricated on top of an active-matrix circuitry located on the silicon backplane. This requires a highly reflective anode to enhance the luminance output. However, during the production process of a TEOLED, the hole injection efficiency and electrical conductivity may be suppressed by environmental exposure, in particular, moisture and oxygen. Given this, aluminum is an unfavorable reflective anode due to the primary concern of its native insulating oxide layer. The native oxide tends to grow during the patterning of the metal anode. In this paper, we have discovered that, by utilizing an A1(2)O(3)/MoO3 heterojunction anode structure, a highly efficient device can be made to achieve a current efficiency of 94 cd/A at a luminance of 1000 cd/m(2). X-ray/ultraviolet photoelectron spectroscopy measurements show the formation of molybdenum gap states and favorable energy level alignment for hole injection. Published under license by AIP Publishing.

SCI ; EI

英语

通讯

National Natural Science Foundation of China (NNSFC)[11774304]

Physics

Physics, Applied

WOS:000464451700044

AMER INST PHYSICS

20191606795167

Alumina ; Aluminum ; Aluminum oxide ; Anodes ; Electron injection ; Heterojunctions ; Luminance ; Photoelectron spectroscopy

Aluminum:541.1 ; Electron Tubes:714.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Inorganic Compounds:804.2

PHYSICS

Web of Science

1.Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5C 3E4, Canada
2.Yunnan Univ, Dept Phys, Ctr Optoelect Engn Res, Kunming 650091, Yunnan, Peoples R China
3.Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Peoples R China

Lee, Jae-Jin,Li, Peicheng,Kung, Hao-Ting,et al. Highly efficient top-emission organic light-emitting diode on an oxidized aluminum anode[J]. JOURNAL OF APPLIED PHYSICS,2019,125(14).

Lee, Jae-Jin,Li, Peicheng,Kung, Hao-Ting,&Lu, Zheng-Hong.(2019).Highly efficient top-emission organic light-emitting diode on an oxidized aluminum anode.JOURNAL OF APPLIED PHYSICS,125(14).

Lee, Jae-Jin,et al."Highly efficient top-emission organic light-emitting diode on an oxidized aluminum anode".JOURNAL OF APPLIED PHYSICS 125.14(2019).