Micro-cavity type OLED based on nanometer silicon thin film composite anode and manufacturing method thereof
A nano-silicon film and composite anode technology, which is applied in the manufacture of semiconductor/solid-state devices, electrical components, and electrical solid-state devices, etc., can solve the problems of low luminous efficiency and luminous brightness of devices, easy formation of deviations, and unfavorable three-primary color synthesis color, etc. Achieve the effect of improved color coordinates, increased light intensity and good color purity
Inactive Publication Date: 2013-12-11
WUYI UNIV
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[0004] However, OLED devices with conventional structures not only have low luminous efficiency and luminous brightness, but also have a wide half-maximum width of the luminous spectrum, and the red, green, and blue coordinates have certain deviations from the standard values, which makes the red, green, and Blue three kinds of OLED devices emit light and synthesize colors, which is easy to form deviation, which is not conducive to the realization of three primary colors synthesized colors
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[0024] refer to figure 1 , the present invention is based on the nano-silicon thin film composite anode 3 microcavity OLED, including a substrate 1 and including a microcavity 4 formed between two electrodes composed of a cathode 2 and an anode 3, and the microcavity 4 includes a plurality of organic layer, the organic layer has at least one light-emitting layer, and the anode 3 is made of a P-type doped nanocrystalline silicon film 31 and an indium tin oxide (ITO) layer 32. The P-type doped nanocrystalline silicon The thin film 31 is located above the substrate 1, wherein the anode 3 can be expressed as "P+-nc-Si:H / ITO". The reason why the microcavity 4 is formed between the two electrodes composed of the cathode 2 and the anode 3 is that the P-nc-Si:H thin film material has optical characteristics approximately transflective and semitransparent, and it and the cathode 2 with high reflectivity make the OLED produce The microcavity effect can narrow the emission spectrum, nar...
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The invention discloses a micro-cavity type OLED based on a nanometer silicon thin film composite anode and a manufacturing method thereof. P-type doping nanometer crystalline silicon thin film materials are prepared by the adoption of a very high frequency enhanced type plasma chemical vapor deposition technology, and the composite anode of the OLED is formed by the P-type doping nanometer crystalline silicon thin film materials and ITO. The composite anode has approximately semi-reflective semi-permeable optical characteristics with low absorptivity, and the composite anode and a cathode Al with high reflectance enable the OLED to generate a micro-cavity effect and enable light-out intensity of the device to be increased, and current efficiency and power efficiency are both obviously improved. In addition, compared with a chromaticity coordinate of an ordinary OLED device, the chromaticity coordinate of a micro cavity is greatly improved and more approaches to the standard value. This shows that the micro-cavity effect enables color purity of outgoing light of the device to be better, and is favorable for achieving the purpose that three primary colors compound the full color.
Description
technical field [0001] The invention relates to an organic light-emitting diode, in particular to a microcavity OLED and a manufacturing method thereof. Background technique [0002] Organic electroluminescent devices, also known as organic light-emitting diodes (Organic Light-Emitting Diode, OLED). OLED has the characteristics of self-illumination, using very thin organic film materials and substrates, when the current passes through, the organic materials will emit light, and the OLED display screen has a large viewing angle, and can significantly save power because this OLED screen has many LCD incomparable advantages. Organic electroluminescent devices (OLEDs) are considered a new generation of display and lighting technologies with great application prospects due to their significant performance advantages and low cost compared with other display and lighting technologies. [0003] The basic structure of OLED is a thin and transparent indium tin oxide (ITO) with semic...
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Login to View More IPC IPC(8): H01L51/52H01L51/56H01L51/50H01L51/54
Inventor 李阳
Owner WUYI UNIV