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Zigzag type medium wide-band-gap small molecule electron donor materials based on thienobenzopyran and application of zigzag type medium wide-band-gap small molecule electron donor materials

A benzopyran and small molecule technology, which is applied to a thienoisobenzopyran-based zigzag-type medium and wide band gap small molecule electron donor material and its application field, and can solve the problem that the types of donor materials are not wide enough and the like

Active Publication Date: 2018-09-28
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the types of donor materials with good performance that can be selected in the photoactive layer are still not wide enough, especially the types of small molecule donor materials are even less

Method used

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  • Zigzag type medium wide-band-gap small molecule electron donor materials based on thienobenzopyran and application of zigzag type medium wide-band-gap small molecule electron donor materials
  • Zigzag type medium wide-band-gap small molecule electron donor materials based on thienobenzopyran and application of zigzag type medium wide-band-gap small molecule electron donor materials
  • Zigzag type medium wide-band-gap small molecule electron donor materials based on thienobenzopyran and application of zigzag type medium wide-band-gap small molecule electron donor materials

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Experimental program
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Effect test

Embodiment 1

[0031] The synthetic route of the DAD aldehyde (9) conjugated derivative with thienoisobenzopyran as the electron donating unit (A) and 5,6-difluorobenzothiadiazole as the electron withdrawing unit (A) is as follows, details See example 1-6.

[0032]

[0033] Synthesis of 2-(Tributyltin)-3-methoxythiophene

[0034] Put compound 1 (40mmol, 4.56g) in a 250mL dry three-necked flask, add 70mL of dry tetrahydrofuran, magnetically stir to dissolve, under nitrogen protection, add dropwise n-butyllithium n-hexane solution (1.6M , 27mL), react for 1h, naturally warm to room temperature and react for 0.5h. Then the temperature was lowered to -78°C, tributyltin chloride (44mmol, 14.32g) was added, and the temperature was raised to room temperature to react for 12h. Pour the reaction mixture into 90 mL of water, extract with petroleum ether 2 to 3 times, 30 mL each time, collect the light yellow organic phase, and then wash the organic phase with saturated potassium carbonate solution 2 to 3...

Embodiment 2

[0052] Thienoisobenzopyran-based A 1 -D-A-D-A 1 Characterization of Medium Wide Band Gap Small Molecule Electron Donor Materials, Fabrication and Performance Test of Photovoltaic Devices

[0053] New thienoisobenzopyran derivative donor unit and all intermediates in the synthesis process 1 H NMR was measured by Bruker Dex-400NMR instrument, and the ultraviolet-visible absorption spectrum of the zigzag type medium and wide band gap small molecule electron donor material was measured by HP-8453 ultraviolet-visible spectrometer.

[0054] Thienoisobenzopyran-based, with A 1 -D-A-D-A 1 The structured zigzag type medium wide band gap small molecule electron donor material organic solar cell device includes: indium tin oxide (ITO) conductive glass anode layer, polystyrene sulfonate (PEDOT / PSS) anode modification layer, photoactive layer and cathode. The photoactive layer is composed of the small molecule photovoltaic material and PC 71 BM blending composition, the blending ratio is 1:1. ...

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Abstract

The invention relates to synthesis of zigzag type medium wide-band-gap small molecule photovoltaic materials based on thienobenzopyran and application of the zigzag type medium wide-band-gap small molecule photovoltaic materials in small molecule photovoltaic devices. An electron donor (D) unit of each medium wide-band-gap small molecule material is a thienobenzopyran derivative, a center acceptor(A) unit is 5,6-bis(benzothiadiazole), and a terminal group acceptor (A1) unit is rhodanine, indandione and derivatives of the indandione. The thienobenzopyran derivative, 5,6-bis(benzothiadiazole),rhodanine, indandione and the derivatives of the indandione can be widely used as donor materials in high-efficiency solution-processed small molecule solar cells. When the acceptor material of the device is fullerene (PC71BM), the maximum energy conversion efficiency and the open circuit voltage of the bulk heterojunction small molecule solar cells are respectively up to 7.55 percent and 0.9V. According to the invention, high efficiency energy conversion of the medium wide-band-gap small molecule photovoltaic materials in the small molecule solar cells is realized.

Description

Technical field [0001] The present invention relates to the field of organic photovoltaics, in particular to a class of thienoisobenzopyran as the electron-donating (D) unit, 5,6-bisfluorobenzothiadiazole as the central electron-accepting (A) unit, and terminal connection Other lack of electronics (A 1 ) Unit with A 1 -D-A-D-A 1 The synthesis of framework zigzag type medium wide band gap small molecule electron donor material and its application in solar cells. technical background [0002] Today's energy and environmental issues have become increasingly prominent, and the search for new green and pollution-free energy has always been a global priority. Solar energy has become the development direction of green energy in today's society due to its inexhaustible, inexhaustible, green and safe advantages, and solar cell technology that converts solar energy into electrical energy has been the focus of research in recent years. . [0003] Organic solar cells (OSCs) have the advantag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D519/00H01L51/42H01L51/46
CPCC07D519/00H10K85/656H10K85/655H10K85/657H10K30/00Y02E10/549
Inventor 朱卫国王文超顾子倩郝儒林马超朱梦冰彭文红
Owner CHANGZHOU UNIV
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