Alternating-current driven perovskite LED device with a dielectric layer and preparation method thereof

An LED device, AC drive technology, applied in the direction of organic semiconductor devices, semiconductor/solid-state device manufacturing, electric solid-state devices, etc., can solve the problems of increasing system complexity, energy loss, etc., to increase system complexity and avoid charge accumulation. Effect

Inactive Publication Date: 2020-02-28
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the electricity used in real life is often 220V, 50Hz AC. To ensure the normal light emission of perovskite LED devices, it is necessary to configure an AC-DC conversion device for the device, thereby increasing the complexity of the system.
Also, in the process of AC-DC conversion, energy may be lost

Method used

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  • Alternating-current driven perovskite LED device with a dielectric layer and preparation method thereof
  • Alternating-current driven perovskite LED device with a dielectric layer and preparation method thereof

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Please refer to figure 1 , the present invention provides an AC-driven perovskite LED device with a dielectric layer, including an anode layer, a first dielectric layer, a hole transport layer, and a perovskite light-emitting layer stacked on a substrate from bottom to top , an electron transport layer and a cathode layer; an AC power supply is applied to both ends of the cathode layer and the anode layer to realize an AC-driven perovskite LED.

[0029] refer to figure 2 , in another embodiment, an AC-driven perovskite LED device with a dielectric layer includes an anode layer, a first dielectric layer, a hole transport layer, and a perovskite luminescent layer sequentially stacked on the substrate from bottom to top. layer, electron transport layer, second dielectric layer and cathode layer;

[0030] In this embodiment, the perovskite light-...

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Abstract

The invention relates to an alternating-current driven perovskite LED device with a dielectric layer. The alternating-current driven perovskite LED device comprises an anode layer, a first dielectriclayer, a hole transport layer, a perovskite light-emitting layer, an electron transport layer and a cathode layer which are sequentially stacked on a substrate from bottom to top. An alternating-current power supply is added to the two ends of the cathode layer and the two ends of the anode layer to achieve an alternating-current driven perovskite LED. The charge accumulation phenomenon can be avoided, and the electrochemical reaction between the organic layer and the cathode and the anode can be avoided, so that the perovskite LED device is protected from being influenced by moisture and oxygen in the atmosphere.

Description

technical field [0001] The invention relates to the light emitting field of perovskite LED devices, in particular to an AC-driven perovskite LED device with a dielectric layer and a preparation method thereof. Background technique [0002] Perovskite materials have the advantages of high photoluminescence quantum yield (PLQY), good defect tolerance, high color purity, low temperature preparation, and high carrier mobility. Wide domain, low preparation cost, and high efficiency have become one of the potential application technologies for next-generation display and lighting technologies. [0003] Although the external quantum efficiency (EQE) of near-infrared, red, and green perovskite LEDs has exceeded 20%, and the EQE of blue perovskite LEDs is also close to 10%, perovskite LEDs are still It is a DC drive device. For devices that require DC drive, only a stable DC power supply can work normally. However, the electricity used in real life is often 220V, 50Hz AC. To ensur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54H01L51/56
CPCH10K85/00H10K50/11H10K2102/00H10K71/00
Inventor 郭太良胡海龙李福山鞠松蔓陈耿旭
Owner FUZHOU UNIV
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