Efficient micromolecular material sublimating and purifying inner pipe and device

Abstract

The invention discloses an efficient micromolecular material sublimating and purifying inner pipe and a device. The efficient micromolecular material sublimating and purifying inner pipe comprises a sleeve, a sublimating inner pipe, a single-hole connecting pipe and a condensation inner pipe. The sublimating inner pipe, the single-hole connecting pipe and the condensation inner pipe are arranged in the sleeve, the sublimating inner pipe is located at the sealed end of the sleeve, the perforated end of the sleeve is connected with one end of the single-hole connecting pipe, and the other end ofthe single-hole connecting pipe is connected with the condensation inner pipe. According to the efficient micromolecular material sublimating and purifying inner pipe, the sleeve sleeves the sublimating inner pipe and the condensation inner pipe, the diffusion path of sublimating gas towards the normal temperature of an outer pipe is sealed, the problem of bidirectional diffusion is solved, and the sublimation productivity is improved. The sublimating inner pipe and the condensation inner pipe are connected through the single-hole connecting pipe, the clearance between the connecting faces issmall, it can be effectively avoided that a material is gasified to escape from the connecting clearance and is deposited on the inner wall of the outer pipe to cause waste, and the inner pipes can be prevented from being bonded. Multiple through holes equal in aperture are formed in the condensation inner pipe, the diffusion distance of the material is shortened, and the efficient micromolecularmaterial sublimating and purifying inner pipe can be suitable for purifying the material very likely to gasify. A collecting brush is arranged, and the material can be fast collected.

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. ...

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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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