Quantum dot surface ligand content measuring method and quantum dot ink preparation method
A technology of surface ligands and determination methods, applied in inks, measuring devices, material analysis using wave/particle radiation, etc., can solve problems such as low pixel resolution, uneven panel quality, and difficulty in dissolving quantum dots Reliable guarantee, strong operability, wide application effect
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Embodiment 1
[0041] 1. Determine the content of nitrogen-containing ligands on the surface of quantum dots in the reference sample particles ω 1 . Wherein the quantum dots are CdSe quantum dots, and the surface ligand is octadecylamine, including the following steps:
[0042] Weigh 5mg of sample particles, grind finely with an agate mortar, and dilute 2*2cm with acetone or isopropanol 2Wipe clean the aluminum foil, cut ~ 1*1cm 2 Paste the double-sided tape on the center of the aluminum foil, spread the sample particle powder on the double-sided tape, and spread the sample particle powder evenly over the entire tape with a clean stainless steel sampling spoon, take another piece of aluminum foil that is wiped clean with acetone to cover the sample particle The powder is placed between two flat stainless steel modules, the pressure is set to 7MPa under the oil press, and the sample is taken out after pressing for 10s. At this time, the sample to be tested is a sheet with a smooth surface a...
Embodiment 2
[0047] 1. Determine the content of nitrogen-containing ligands on the surface of quantum dots in the reference sample particles ω 1 . Wherein the quantum dots are ZnO quantum dots, and the surface ligand is stearic acid, comprising the following steps:
[0048] Weigh 15 mg of sample particles and grind them finely with an agate mortar. Dilute 2*2cm with acetone or isopropanol 2 Wipe clean the aluminum foil, cut ~ 1*1cm 2 The double-sided tape is attached to the center of the aluminum foil. Spread the sample particle powder on the double-sided tape, and spread the powder evenly over the entire tape with a clean stainless steel sampling spoon. Take another piece of aluminum foil wiped with acetone to cover the sample particle powder and place it between two flat stainless steel modules. Set the pressure under the oil press to 15MPa, and take out the sample after pressing for 10s. At this time, the sample to be tested has a flat surface, Thick flakes. Remove the upper layer...
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