Nanocrystalline ink with fluorescence characteristics and preparation method and patterning application thereof
A technology with fluorescent characteristics and nanocrystals, which is applied in the field of nanocrystal inks and its preparation, can solve problems such as poor processing quality, simple device structure, and low efficiency, and achieve the effect of changing
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[0127] Example 1
[0128] This embodiment provides a nanocrystalline ink, which is specifically as follows:
[0129] The nanocrystalline material of this embodiment is CsPbBr 3 Nanocrystal, the XRD pattern of the nanocrystal is as figure 1 As shown, the SEM image of its crystal morphology is as figure 2 As shown, the PL diagram of the fluorescence emission characteristics of the crystal is as image 3 Shown.
[0130]
[0131]
[0132] This embodiment further provides a method for preparing the above-mentioned nanocrystalline ink, as follows:
[0133] According to (n-hexane + n-tetradecane): sodium thiosulfate: CsPbBr 3 Nanocrystalline mass ratio=1:0.0002:0.015 to prepare a mixed solution, and ultrasonically stir for 1h to obtain CsPbI with uniform composition 3 Nanocrystalline dispersion A1;
[0134] Then prepare a mixed solution according to the mass ratio of (n-hexane + n-tetradecane): polyethylene glycol = 1:0.03, and stir for 6 hours under heating at 50°C to obtain a binding soluti...
Example Embodiment
[0140] Example 2
[0141] This embodiment provides a nanocrystalline ink, which is specifically as follows:
[0142] The nanocrystalline material in this embodiment is CsPbBr 3 @CsPbI 3 Nanocrystalline with core-shell structure. CsPbBr used in this example 3 @CsPbI 3 The XRD pattern of the core-shell structured nanocrystal is as follows Figure 4 As shown, the SEM image of its crystal morphology is as Figure 5 As shown, the PL diagram of the fluorescence emission characteristics of the crystal is as Image 6 Shown.
[0143]
[0144] This embodiment further provides a method for preparing the above-mentioned nanocrystalline ink, as follows:
[0145] According to toluene: (sodium dodecylbenzene sulfonate + carboxymethyl cellulose): CsPbBr 3 @CsPbI 3 Nanocrystal mass ratio=1:0.001:0.01 to prepare a mixed solution, and ultrasonically stir for 0.5h to obtain a uniform CsPbBr 3 @CsPbI 3 Nanocrystalline dispersion A2;
[0146] Then, the mixed solution was prepared according to the mass ratio...
Example Embodiment
[0151] Example 3
[0152] This embodiment provides a nanocrystalline ink, which is specifically as follows:
[0153] The nanocrystalline material in this embodiment is CsPbI 3 / rGO nanocomposite heterogeneous crystals. CsPbI used in this example 3 The XRD pattern of / rGO nanocomposite heterogeneous crystal is as follows Figure 7 As shown, the SEM image of its crystal morphology is as Figure 8 As shown, the PL diagram of the fluorescence emission characteristics of the crystal is as Picture 9 Shown.
[0154] Nanocrystalline materialsCsPbI 3 / rGO nanocomposite heterogeneous crystal
[0155] This embodiment further provides a method for preparing the above-mentioned nanocrystalline ink, as follows:
[0156] According to (1,2-dichloroethane + p-xylene): sodium lauryl sulfate: CsPbI 3 / rGO nanocomposite heterogeneous crystal mass ratio=1:0.0002:0.02 to prepare a mixed solution, ultrasonically stir for 3h, and obtain a uniform CsPbI 3 / rGO nanocomposite heterogeneous crystal dispersi...
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