A white top-emission organic light-emitting diode and its preparation method
A light-emitting diode and top-emitting technology, which is applied in the direction of organic semiconductor devices, semiconductor/solid-state device manufacturing, and electric solid-state devices, can solve the problems of low luminous efficiency of blue light-emitting materials, and achieve improved color rendering index, enhanced efficiency, and enhanced intensity and the effect of efficiency
Active Publication Date: 2019-12-10
NANJING UNIV OF INFORMATION SCI & TECH
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In addition, the luminous efficiency of the blue light-emitting material itself is low, so the key to realizing a high-performance white TOLED is to increase the intensity of blue light in the device.
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[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0037] Unless the context clearly states otherwise, the number of elements and components in the present invention can exist in a single form or in multiple forms, and the present invention is not limited thereto. Although the steps in the present invention are arranged with labels, they are not used to limit the order of the steps. Unless the order of the steps is clearly stated or the execution of a certain step requires other steps as a basis, the relative order of the steps can be adjusted. It can be understood that the term "and / or" used herein refers to and covers any and all possible combina...
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The invention provides a white light top emission type organic light emitting diode. The white top-emitting organic light-emitting diode includes a substrate, a reflective anode, a hole injection layer, a hole transport layer, a double blue light emitting layer, a red light emitting layer, and an electron transport layer evaporated in sequence from bottom to top. , a semitransparent cathode and a light outcoupling layer. The beneficial effect of the present invention is that: the white light top-emitting organic light-emitting diode can effectively improve energy transfer efficiency, enhance the intensity of red light, and finally improve the luminous efficiency and color rendering index of white light. The present invention also provides a preparation method based on the white top-emission organic light-emitting diode.
Description
technical field [0001] The invention belongs to the technical field of organic electroluminescence, and in particular relates to a white-light top-emitting organic light-emitting diode and a preparation method thereof. Background technique [0002] Organic light-emitting diodes (OLEDs) have become the most promising new-generation light-emitting technology because of their advantages such as all-solid-state, active light-emitting, high brightness, low power consumption, high luminous efficiency, wide operating temperature, and flexibility. White light OLED can not only realize full-color display, but also can be used as a lighting source and a backlight source for liquid crystal display, which has set off an upsurge of research in academic and industrial circles. Traditional white OLEDs are bottom-emission, that is, light is emitted from a transparent glass substrate. Combining the bottom-emitting white light OLED with the thin-film transistor (TFT) drive circuit fabricated...
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IPC IPC(8): H01L51/50H01L51/56
CPCH10K71/164H10K50/121H10K50/13H10K2102/3026H10K71/00
Inventor 张雅男袁柳春季博
Owner NANJING UNIV OF INFORMATION SCI & TECH