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Organic light emitting diode (OLED) device

A device and organic material technology, applied in the field of OLED devices, can solve the problems of affecting device performance, short device service life, and reduced device efficiency, and achieve the effects of improving luminous efficiency, reducing easy aging, and improving device life.

Inactive Publication Date: 2011-09-14
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the OLED device is in the working state, because the formed Joule heat has a great influence on the organic material, when the organic material works at a certain temperature, its own properties will change, which will make the carrier transport of the entire device unbalanced, Affects the performance of the entire device, thereby reducing the efficiency of the device. When the organic material ages, the device part will have obvious uneven display, dead pixels and other problems, which will eventually lead to a short service life of the device.

Method used

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  • Organic light emitting diode (OLED) device
  • Organic light emitting diode (OLED) device

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Embodiment Construction

[0011] The OLED device of the present invention and its preparation method are described in detail below in conjunction with the structural diagram:

[0012] see figure 1 As shown, the OLED device of the present invention includes an anode 1 and a cathode 4, and an organic material 3 and a transition metal oxide 2 arranged between the anode 1 and the cathode 4, and the organic material 3 and the transition metal oxide group 2 form an n-dimensional quantum well structure. Wherein, the organic material 3 serves as a light-emitting layer and an electron transport layer, and the transition metal oxide 2 serves as a hole transport layer and an electron transport layer.

[0013] The n-dimensional quantum well structure is 1, 2, 3, or 4-dimensional. The metal oxide is molybdenum oxide MoO x , Tungsten Oxide WO 3 or vanadium pentoxide V 2 o 5 One of them, the thickness range is 5-60nm. Described organic material is Alq 3 (Tris(8-hydroxy-quinolinato)aluminium), AND(9,10-di(naph...

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Abstract

The invention discloses an organic light emitting diode (OLED) device. The OLED device is maximally characterized by only adopting one organic material and a transition metal oxide between an anode and a cathode, wherein the two materials form an n-dimensional quantum well structure between the anode and the cathode; the organic material serves as a luminous layer and an electron transport layer; and the metal oxide services as a hole transport layer and the electron transport layer. The OLED device fully utilizes the luminescent properties, mechanical properties and thermal properties of the organic material; and simultaneously, only one organic material is adopted so as to fulfill the aim of reducing the organic materials, and the adoption of the metal oxide in the other functional layers aims to utilize the characteristics of stability and electric conductivity of the metal oxide.

Description

technical field [0001] The invention relates to an illuminating device, in particular to an OLED device. Background technique [0002] As a new generation of green light source and lighting technology that is environmentally friendly and energy-saving, compared with ordinary light sources, OLED has other lighting advantages besides flexible substrate lighting, such as large-area surface light source lighting, low driving voltage, and wide viewing angle. The performance of OLED mainly depends on the number and balance of holes and electrons injected into the light-emitting layer. [0003] However, there are still many problems on the road to practical application. For example, when the driving voltage is large, the thermal effect of contact resistance reduces the stability of materials and devices. As a result, the luminous efficiency of the device is low, and the service life of the device is too short. Therefore, how to make full use of the advantages of organic materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52
Inventor 张方辉丁磊梁田静
Owner SHAANXI UNIV OF SCI & TECH
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