Conjugated polymer and organic photovoltaic element

A conjugated polymer, repeating unit technology, applied in photovoltaic power generation, electrical components, electrical solid devices, etc., can solve the problems of easy dimerization, weak absorption in the visible light region, and high price

Pending Publication Date: 2021-04-27
WAYS TECHN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second-generation solar cells are thin-film cadmium telluride (CdTe) solar cells, but the toxicity of the raw materials and the manufacturing process have great pollution to the environment
[0003] Although organic photovoltaics have many advantages, the current development of electron acceptor materials is mostly based on fullerene derivatives (such as PC 60 BM and PC 70 BM) mainly, but the fullerene derivatives themselves have the following disadvantages: easy dimerization under light, easy crystallization when heated, weak absorption in the visible light region, difficult structure modification and purification, and high price, etc.

Method used

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  • Conjugated polymer and organic photovoltaic element
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  • Conjugated polymer and organic photovoltaic element

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1～5

[0097] The following is a description of Preparation Examples 1 to 5 of the conjugated polymer. The following preparation examples 1 to 5 illustrate the conjugated polymers of the aforementioned formula (1) prepared by a first method of preparing conjugated polymers, the main chain of the conjugated polymers contains the group represented by the aforementioned formula (2). group. In the following preparation examples 1-5, R in the formula (2) 1 and R 2 are the same group and are denoted R, that is to say R=R 1 =R 2 , R and R 1 and R 2 For the same group, so formula (2) can also be expressed as formula (4):

[0098]

[0099] Wherein, R is a carbon group having 1 to 40 carbon atoms, which means any monovalent or polyvalent group containing at least one carbon atom without any non-carbon atom or optionally combined with at least one non-carbon atom As an organic moiety, the non-carbon atom is N, O, S, P, Si or F; preferably, R is a carbon group with 1 to 20 carbon atoms...

preparation example 6

[0137] The following is a description of Preparation Example 6 of this conjugated polymer. The following preparation example 6 illustrates the conjugated polymer of the aforementioned formula (1) prepared by a second preparation method of the conjugated polymer, the main chain of the conjugated polymer includes a group shown in the aforementioned formula (2), In the following preparation example 6, R in formula (2) 1 and R 2 for different groups. In addition, in the conjugated polymer of formula (1) in Preparation Example 6, the following conditions are satisfied: a=1, b and c are 0. Therefore, the conjugated polymer of formula (1) can also be expressed as the aforementioned formula (5) in the following preparation example 6, and R 1 and R 2 for different groups.

[0138] The preparation process of the second conjugated polymer in Preparation Example 6 is shown in Reaction Formula 1 and Reaction Formula 2 below. In Preparation Example 6, p and p' are each independently 1...

preparation example 7

[0152] The following is a description of Preparation Example 7 of this conjugated polymer. The following preparation example 7 illustrates the preparation of the conjugated polymer of the aforementioned formula (1) by a third preparation method of the conjugated polymer. The main chain of the conjugated polymer includes the group shown in the aforementioned formula (2-1). group. In addition, in the conjugated polymer of formula (1) in Preparation Example 7, the following conditions are met: a and b are not 0, and c is 0, and the sum of a and b is 1, that is to say, a and b are greater than 0 and less than 1, 0

[0153]

[0154] The preparation process of the third conjugated polymer in Preparation Example 7 is shown in the following reaction formula 3 and reaction formula 4. In Preparation Example 7, p, p', q and q' are each...

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Abstract

The invention provides a conjugated polymer used as an electron donor material, a group of a thiophene derivative on a main chain of the conjugated polymer is used as a weak electron withdrawing group and is matched with an electron donating group on the main chain, and an absorption spectrum and a material energy level are controlled in a wide energy gap range. The conjugated polymer has wide absorption wavelength distribution and high absorbance in an ultraviolet-visible region, so that the conjugated polymer can be used as an electron donor material with a wide energy gap, and the conjugated polymer has excellent photoelectric conversion characteristics. In addition, the invention also provides an organic photoelectric element of which the active layer comprises the conjugated polymer.

Description

technical field [0001] The present invention relates to an electron donor material and an organic photoelectric element comprising the aforementioned electron donor material, in particular to the conjugated polymerization of a group containing thiophene derivatives in a main chain of the aforementioned electron donor material and an organic photoelectric element comprising the aforementioned conjugated polymer, the aforementioned organic photoelectric element includes organic light-emitting diodes (organic light-emitting diodes), organic thin film transistor (organic thin film transistor), organic photovoltaic elements (organic photovoltaics) and organic Organic optoelectronic components of photodetectors. Background technique [0002] With the evolution of the times, the consumption of energy resources such as coal, oil, natural gas and nuclear energy is increasing day by day, and the energy crisis is relatively emerging. Therefore, solar power generation has been developed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12H01L51/50H01L51/54
CPCC08G61/126C08G2261/124C08G2261/228C08G2261/3223C08G2261/3243C08G2261/354C08G2261/91C08G2261/92C08G2261/95H10K85/113H10K85/151H10K50/11Y02E10/549
Inventor 庄子融何嘉兴徐国凯施宏旻柯崇文
Owner WAYS TECHN CORP
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