A high-efficiency small molecule material sublimation purification inner tube and device

Abstract

The high-efficiency small molecule material sublimation purification inner tube and device of the present invention include a casing, a sublimation inner tube, a single-hole connecting tube and a condensation inner tube; the sublimation inner tube, the single-hole connecting tube and the condensation inner tube are arranged in the sleeve tube, The sublimation inner tube is placed at the closed end of the casing tube, and its open end is connected to one end of the single-hole connecting pipe, and the other end of the single-hole connecting pipe is connected to the condensation inner pipe. In the present invention, casing sleeves are set outside the sublimation inner tube and the condensation inner tube to close the diffusion path of the sublimation gas to the room temperature end of the outer tube, solve the bidirectional diffusion problem, and increase the sublimation yield; the sublimation inner tube and the condensation inner tube are connected through a single-hole connecting tube , the gap between the connecting surfaces is small, which can effectively prevent the material from escaping from the connecting gap and depositing on the inner wall of the outer tube after gasification to cause waste, and can prevent the inner tubes from sticking to each other; It shortens the diffusion distance of materials and is suitable for the purification of materials that are easily vaporized; it is also equipped with a collection brush to quickly collect materials.

Description

technical field [0001] The invention relates to a small molecule material sublimation device, in particular to an efficient small molecule material sublimation purification inner tube and a device. Background technique [0002] At present, organic small molecule materials are widely used in new electronic industries such as OLED (Organic Light-Emitting Diode, organic light-emitting diode) display, flexible sensors, and organic solar cells. The common feature of these organic small molecule materials is that they can form a thin film with controllable thickness / shape on the substrate by evaporation, which is similar to the current mainstream semiconductor production process. The performance of organic electronic devices is closely related to the purity of materials during evaporation, so the preparation process of high-purity organic materials has always been concerned by the industry. The difference in gasification temperature of impurities is used to separate and purify. ...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an efficient inner tube and device for sublimation and purification of small molecule materials, aiming at solving the problem of two-way diffusion of gas molecules, leakage of target materials from the connection gap, and gas molecule leakage in existing inner tubes and devices for sublimation and purification of small molecule materials. Problems with long diffusion paths, low sublimation yields and inefficient collection of materials

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