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A kind of preparation method of hyperbranched sodium sulfonate small molecule electron transport layer

A technology of electron transport layer and sodium sulfonate, which is applied in the preparation of sulfonate, circuit, organic chemistry, etc., can solve the problems that cannot solve the active layer morphology and interface barrier at the same time, and achieve the convenience of large-area roll-to-roll Effects of printing production, environment-friendly processing, and improving device efficiency

Active Publication Date: 2020-03-24
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the invention provides a preparation method of hyperbranched sodium sulfonate small molecule electron transport layer; the existing electron transport layer is random or alternating conjugated polymer electrolyte, fullerene derivative , small molecule electrolytes and inorganic zinc oxide, etc., these electron transport layers cannot solve the problem of active layer morphology and interface barrier at the same time and achieve environmental friendly processing and simple preparation process

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  • A kind of preparation method of hyperbranched sodium sulfonate small molecule electron transport layer
  • A kind of preparation method of hyperbranched sodium sulfonate small molecule electron transport layer
  • A kind of preparation method of hyperbranched sodium sulfonate small molecule electron transport layer

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] The reaction equation of the present invention is attached figure 2 , the specific reaction steps are as follows:

[0020] (1) Drying of tetrahydrofuran: add 200mL of analytically pure tetrahydrofuran to a 250mL dry nitrogen bottle, cut sodium into sodium filaments and add benzophenone indicator under nitrogen atmosphere, reflux to dark blue, and distill out dry tetrahydrofuran stand-by;

[0021] (2) Under the protection of nitrogen, add 1.89 g of 0.01 mol of tetraethylene pentamine to the above reaction liquid, and 60 mL of dry THF; under ice bath, slowly add 1.0 g of sodium hydride to the reaction liquid in nitrogen atmosphere , stirred at room temperature for 2 h, and then the reaction was raised to 50 ° C overnight;

[0022] (3) After the reaction solution is cooled to room temperature, it is then cooled in an ice bath, and 13.6 g of 0.1mol 1,4-butane su...

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Abstract

The invention discloses a preparation method of a hyperbranched sodium sulfonate small-molecule electron transport layer. The hyperbranched sodium sulfonate small-molecule electrolyte can be prepared through a one-step simple reaction. First, tetraethylenepentamine was added to the dry tetrahydrofuran solution, NaH was added under ice bath and nitrogen atmosphere, stirred at room temperature for 2 hours, then the reaction solution was raised to 50°C for overnight reaction, and excess was added through a constant pressure dropping funnel. 1,4-butane sultone, cooled to room temperature after the reaction, suction filtered, and the filter residue was collected. The obtained filter residue was dissolved in deionized water and purified by dialysis with a dialysis bag with a pore size of 1000 to obtain the light yellow target product PNSO 3 Na. Due to the existence of hyperbranched side chain polar groups, endowing this small molecule can not only realize the processing of environmentally friendly polar solvents such as water and alcohol, but also form interface dipoles, reduce the work function, and improve the interface contact. It can be used as a good cathode interface layer for devices such as photovoltaic cells, LEDs and FETs.

Description

technical field [0001] The invention relates to the technical field of electron transport layers of organic solar cells, in particular to a preparation method of hyperbranched sodium sulfonate small molecule electron transport layers. Background technique [0002] With the increasing global environmental pollution and energy crisis, it is imminent to develop new renewable energy. Among the many renewable energies, solar energy is unique, with the advantages of abundant resources, cleanliness and universality. Due to the complex production process, expensive production equipment, limited silicon materials, and the conversion efficiency has basically reached the limit of traditional inorganic silicon solar cells, it limits its further industrialization and expansion of production. On the contrary, organic polymer solar cells have the advantages of high quality, low cost, solution printing production and controllable structure, which have aroused widespread interest of scholar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C303/32C07C309/14H01L51/46
CPCC07C303/32H10K85/60C07C309/14Y02E10/549Y02P70/50
Inventor 周丹徐镇田秦元成方行忠杜科志于婉君贾彬张文强
Owner NANCHANG HANGKONG UNIVERSITY
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