Preparation method of all-solution perovskite light-emitting diode
A light-emitting diode and perovskite technology, which is applied in semiconductor/solid-state device manufacturing, semiconductor devices, electrical components, etc., can solve the problems of reducing the film quality of the perovskite light-emitting layer, deterioration of device efficiency, and erosion of the perovskite light-emitting layer. , to achieve the effect of good surface morphology, reduced erosion, and excellent transmission performance
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Embodiment 1
[0031] In this example, see figure 1 , the preparation of a full solution perovskite light-emitting diode, comprising the following steps:
[0032] a. Preparation of electron transport layer PFN solution:
[0033] CB and DCM were mixed in a volume ratio of 3:7 as the solvent of the electron transport layer PFN, PFN was added to the above mixed solvent at a concentration of 4 mg / ml, and the above solution was stirred with a stirrer for 2 h, and then the pore size was 0.45. Filter through a μm polytetrafluoroethylene filter to obtain a uniformly mixed PFN solution for later use;
[0034] b. Preparation of hole transport layer solution:
[0035] Poly(9-vinylcarbazole) (PVK) and poly[(N,N'-(4-n-butylphenyl)-N,N'-diphenyl-1,4-phenylenediamine)-alt -(9,9-Di-n-octylfluorenyl-2,7-diyl)](TFB) was weighed in a mass ratio of 2:8, and the total mass was 10mg and dissolved in 1mL of CB solvent , obtain the raw material mixed solution, use the stirrer to stir the raw material mixed solu...
Embodiment 2
[0049] This embodiment is basically the same as the first embodiment, and the special features are:
[0050] In this embodiment, the preparation of a full-solution perovskite light-emitting diode includes the following steps:
[0051] a. Preparation of electron transport layer PFN solution:
[0052] CB and DCM were mixed in a volume ratio of 7:3 as the solvent of the electron transport layer PFN, PFN was added to the above mixed solvent at a concentration of 4 mg / ml, and the above solution was stirred with a stirrer for 2 h, and then the pore size was 0.45. Filter through a μm polytetrafluoroethylene filter to obtain a uniformly mixed PFN solution for later use;
[0053] b. Preparation of hole transport layer solution:
[0054] Poly(9-vinylcarbazole) (PVK) and poly[(N,N'-(4-n-butylphenyl)-N,N'-diphenyl-1,4-phenylenediamine)-alt -(9,9-Di-n-octylfluorenyl-2,7-diyl)](TFB) was weighed in a mass ratio of 8:2, and the total mass was 10mg and dissolved in 1mL of CB solvent , obta...
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