Soluble organic photovoltaic micromolecule material with high fill factor, preparation method and application of material

An organic photovoltaic and small molecule technology, which is applied in the fields of photovoltaic power generation, organic chemistry, semiconductor/solid-state device manufacturing, etc., can solve the problems of unsatisfactory blended active layer morphology, unfavorable accumulation between molecules, and low charge extraction ability. The effect of good solubility, clear molecular weight and good air stability

Inactive Publication Date: 2014-10-08
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the non-planarity of triphenylamine molecules, the molecules are not conducive to stacking, which leads to low charge extraction ability from the blend interface, and the morphology of the blended active layer is not ideal, so the fill factor of the device is low, basically below 60%.

Method used

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  • Soluble organic photovoltaic micromolecule material with high fill factor, preparation method and application of material
  • Soluble organic photovoltaic micromolecule material with high fill factor, preparation method and application of material
  • Soluble organic photovoltaic micromolecule material with high fill factor, preparation method and application of material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The synthesis of embodiment 1, BDTT (in the formula III, R 1 =C 2 h 4 C 6 h 13 compound of)

[0061] The chemical reaction process is as follows (references for specific reaction steps and reaction conditions LijunHuo, Angew.Chem.Int.Ed.2011, 50, 9697-9702)

[0062]

Embodiment 2

[0063] Embodiment 2, Br SCHO (compound 10)

[0064] The chemical reaction process is as follows (specific reaction steps and reaction conditions refer to J.Zhou, X.Wan, Y.Liu, G.Long, F.Wang, Z.Li, Y.Zuo, C.Li, Y.Chen , Chem. Mater. 2011, 23, 4666-4668.).

[0065]

Embodiment 3

[0066] Embodiment 3, B3SCHO2BDTT (compound 11)

[0067] The chemical reaction process is as follows (specific reaction steps and reaction conditions refer to J.Zhou, Y.Zuo, X.Wan, G.Long, Q.Zhang, W.Ni, Y.Liu, Z.Li, G.He , C. Li, B. Kan, M. Li, Y. Chen, J. Am. Chem. Soc. 2013, 135, 8484-8487.).

[0068] The feed ratio of compound 6 and compound 10 is 1:2, the reaction temperature is 100°C, the reaction time is 12 hours, the amount of palladium catalyst is 2% of the molar equivalent of compound 10, and the product 11 is obtained as a maroon solid with a yield of 80% .

[0069] In addition, the reaction conditions can also be: the feed ratio of compound 6 and compound 10 is 1:2, the amount of palladium catalyst is 2% of the molar equivalent of compound 10, the reaction temperature is 100 ° C, the reaction time is 48 hours, and the product 11 is jujube Red solid, yield 78%.

[0070] In addition, the reaction conditions can also be: the feed ratio of compound 6 and compound 10 ...

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Abstract

The invention discloses a soluble organic photovoltaic micromolecule material with high fill factor, a preparation method and an application of the material, belonging to the field of photovoltaic materials. The type of molecule takes two-dimensional conjugate dibenzothiophene or dinaphthothiophene as a donor and takes cyanoalkyl ester or oxo-alkyl cyanide as a receptor; the soluble organic micromolecule material is simple to prepare, easy to pure, good in crystallinity and good in solubility in common organic solvents (such as dichloromethane, trichloromethane, tetrahydrofuran or chlorobenzene and the like); a high-quality film can be prepared by using a solution method; compared with polymers, the soluble organic micromolecule material is clear in molecular weight and free from the problem of distribution of the molecular weight; the type micromolecule is applied to the receptor material of solar cells; the energy conversation efficiency reaches 7.5%, and the filler factor exceeds 70%.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic materials, and relates to a soluble organic photovoltaic small molecule material, a preparation method and its application, in particular to a soluble organic photovoltaic small molecule material with a high filling factor, a preparation method and its application. Background technique [0002] In recent years, solution-processable organic small molecule solar cells have received special attention because of their advantages such as simple preparation process, low cost, light weight, flexible devices, and clear molecular structure and no molecular weight distribution of polymer solar cells ( (a) A. Mishra, P. Bauerle, Angew. Chem. Int. Ed. 2012, 51, 2020-2067. Y. Lin, Y. Li, X. Zhan, Chem. Soc. Rev. 2012, 41, 4245 -4272; (b) V. Gupta, A.K.K. Kyaw, D.H. Wang, S. Chand, G.C. Bazan, A.J. Heeger, Scientific Reports 2013, 3; (c) C.J. Takacs, Y. Sun, G.C. Welch, L.A. Perez, X. Liu , W. Wen, G.C. B...

Claims

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Application Information

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IPC IPC(8): C07D495/04C07D519/00H01L51/46
CPCY02E10/549C07D495/04C07D519/00H10K85/6576
Inventor 魏志祥邓丹吕琨
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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