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Nano metal wire dispersion liquid and its preparation and application
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A technology of nanometer metal wires and dispersion liquid, applied in metal processing equipment, applications, household appliances, etc., can solve the problems of reduced device life, OLED or QLED device damage, etc., to prolong device life, easy to prepare, and overcome visible light transmission underrate effect
Active Publication Date: 2021-10-22
广州鑫威纳科技有限公司
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However, traditional metal nanowires (such as silver nanowires) dispersions usually have a destructive effect on OLED or QLED devices, which will reduce the lifetime of the device
Method used
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Embodiment 1
[0044] Embodiment 1, the preparation of nano-silver wire dispersion liquid
[0045] This embodiment provides a silver nanowire dispersion and a preparation method thereof.
[0046] Please refer to Table 1 for the formula of the silver nano wire dispersion liquid.
[0047] The preparation method of this nano-silver wire dispersion liquid, comprises the steps:
[0048] (1) Obtain silver nanowires
[0049] The raw material is nano-silver wire liquid, which is nano-silver dispersed in highly polar solvent (water), and the mass percentage of contained nano-silver wire is 1%.
[0050] Take 1mL of silver nanowire solution with a mass percentage of 1%, and according to the concentration of silver nanowire contained in the silver nanowire solution, it can be known that 1mL of silver nanowire solution contains 0.01g of silver nanowire.
[0051] Centrifuge 1 mL of the above silver nanowire solution for 5 minutes. After centrifugation, a layered centrifugation product in which the su...
Embodiment 2
[0054] Embodiment 2, the preparation of nanometer copper wire dispersion liquid
[0055] This embodiment provides a nano-copper wire dispersion and a preparation method thereof.
[0056] Please refer to Table 1 for the formula of the nano copper wire dispersion liquid.
[0057] The preparation method of the nano copper wire dispersion liquid comprises the following steps:
[0058] (1) Obtain nano copper wire
[0059] The raw material is nano copper wire liquid, which is nano copper wire dispersed in high polarity solvent (ethanol), and the mass percentage of contained nano copper wire is 1%.
[0060] Take 1mL of nano-copper wire liquid with a mass percentage of 1%, and according to the concentration of nano-copper wire contained in the nano-copper wire liquid, it can be known that 1mL of nano-copper wire liquid contains 0.01g of nano-copper wire.
[0061] Centrifuge 1 mL of the above-mentioned nano-copper wire solution for 5 minutes. After centrifugation, a layered centri...
Embodiment 3
[0065] This example is a variation example of Example 1, and the variation mainly lies in the formula of the nano metal wire dispersion liquid, please refer to Table 1 for details.
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Abstract
The invention relates to a nanometer metal wire dispersion liquid and its preparation and application. The nano metal wire dispersion liquid includes the following components in mass percentage: 0.01% to 5% of nano metal wire, 0.1% to 15% of hyperdispersant, 80% to 95% of polar solvent; the polar solvent is relative dielectric constant Low polarity solvents below 3 and boiling point not lower than 150°C. Forming a thin film on the transparent conductive oxide electrode with the nanometer metal wire dispersion liquid of the specific formula will not cause damage to OLED or QLED devices, and can prolong the life of the devices. Especially with a suitable type of low-polarity solvent and hyperdispersant, it can further overcome the problems of insufficient visible light transmittance and limited surface resistance of transparent electrodes prepared by traditional nano-metal wire dispersions for preparing nano-metal wire networks. Moreover, the nanometer metal wire dispersion liquid of the specific formula is easy to prepare, has good dispersibility and stability, and is easy to prepare in large-scale production.
Description
technical field [0001] The invention relates to the technical field of electronic materials and inks, in particular to a nanometer metal wire dispersion liquid and its preparation and application. Background technique [0002] Large-sized OLED and QLED TVs need to change from a bottom-emitting device structure to a top-emitting device structure with the increase in display size and resolution. However, for large-scale top-emitting devices, the traditional MgAg (magnesium-silver) semitransparent cathode cannot meet the requirements of high visible light transmittance and low surface resistance. Therefore, the industry considers using transparent conductive oxides as cathodes for large-scale top-emitting OLED / QLED devices. [0003] Commonly used transparent conductive oxides, including ITO, IZO, etc., have good visible light transmittance within a certain thickness range, but their surface resistance is still relatively high for top-emitting OLED / QLED devices, which will caus...
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