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Novel hole transport layer material and perovskite solar cell composed by novel hole transport layer material

A technology of hole transport layer and solar cell, which is applied in the direction of circuits, photovoltaic power generation, electrical components, etc., and can solve the problems of easily damaged perovskite layer, unfavorable stability of battery devices, and low hole mobility

Inactive Publication Date: 2016-05-04
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hole mobility of such amorphous hole-transporting layer materials is generally low, among which Spiro-OMeTAD and PTAA require bis(trifluoromethylsulfonyl)lithium (Li-TFSI) and 4-tert-butylpyridine (TBP ) as p-type doping, such doping molecules will have a negative impact on the stability of the battery device; while PEDOT:PSS does not require doping, but the polyelectrolyte has strong hygroscopicity and is easy to damage the perovskite layer. On the other hand, the acidity of PEDOT:PSS will cause corrosion to the ITO glass, and it is easy to absorb moisture, resulting in a decrease in the stability of the battery device.

Method used

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  • Novel hole transport layer material and perovskite solar cell composed by novel hole transport layer material
  • Novel hole transport layer material and perovskite solar cell composed by novel hole transport layer material
  • Novel hole transport layer material and perovskite solar cell composed by novel hole transport layer material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Using 3,8,13-tribromo-5,5,10,10,15,15-hexa-n-hexyl-10,15-dihydro-5-hydro-indene [1,2-α; 1',2 '-c] fluorene (Trux-Br 3 ) with the Buchwald-Hartwig coupling reaction of two (4-methoxyphenyl) amine (OMeDPA) to synthesize Trux-OMeTAD, and the reaction equation is:

[0039]

[0040] Among them, Trux-Br 3 Synthesized by the method reported in the literature Macromolecules2004, 37, 8874-8882, OMeDPA can be purchased through commercial channels. The synthetic steps of Trux-OMeTAD are:

[0041] Add 0.500g Truxene-Br to the dry reaction vial 3 , 0.400gOMeDPA, and 0.450g sodium tert-butoxide, then add 10mL toluene, build a closed reaction reflux device, freeze the mixed solution with liquid nitrogen, and then carry out three cycles of vacuuming and filling nitrogen, under the protection of nitrogen, add 10mgPd 2 (dba) 3 As a catalyst, 0.02 mL of tri-tert-butylphosphine toluene solution (1.0 M) was used as a ligand, followed by three cycles of evacuation and nitrogen filling,...

Embodiment 2

[0044] Using 3,8,13-tribromo-5,5,10,10,15,15-hexa-n-hexyl-10,15-dihydro-5-hydro-indene [1,2-α; 1',2 '-c] fluorene (Trux-Br 3 ) with the Buchwald-Hartwig coupling reaction of two (5-methoxythienyl) amines (OMeDTA) to synthesize Trux-OMeTADT, and the reaction equation is:

[0045]

[0046] Add 0.500g Truxene-Br to the dry reaction vial 3 , 0.440gOMeDTA, and 0.450g sodium tert-butoxide, then add 10mL toluene, build a closed reaction reflux device, freeze the mixed solution with liquid nitrogen, and then carry out three cycles of vacuuming and filling nitrogen, under the protection of nitrogen, add 10mgPd 2 (dba) 3 As a catalyst, 0.02 mL of tri-tert-butylphosphine toluene solution (1.0 M) was used as a ligand, followed by three cycles of evacuation and nitrogen filling, followed by thawing and heating to reflux at 110° C. for 10 hours. After the reaction, the reaction solution was extracted with dichloromethane, washed three times with concentrated brine, the organic phase w...

Embodiment 3

[0049] Using 3,8,13-tribromo-5,5,10,10,15,15-hexa-n-hexyl-10,15-dihydro-5-hydro-indene [1,2-α; 1',2 '-c] fluorene (Trux-Br 3 ) and the Buchwald-Hartwig coupling reaction of two (4-methylthiophenyl) amine (SMeDPA) to synthesize Trux-SMeTAD, the reaction equation is:

[0050]

[0051] Add 0.500g Truxene-Br to the dry reaction vial 3 , 0.420g SMeDPA, and 0.450g sodium tert-butoxide, then add 10mL toluene, build a closed reaction reflux device, freeze the mixed solution with liquid nitrogen, and then carry out three cycles of vacuuming and filling nitrogen, under the protection of nitrogen, add 10mgPd 2 (dba) 3 As a catalyst, 0.02 mL of tri-tert-butylphosphine toluene solution (1.0 M) was used as a ligand, followed by three cycles of evacuation and nitrogen filling, followed by thawing and heating to reflux at 110° C. for 10 hours. After the reaction, the reaction solution was extracted with dichloromethane, washed three times with concentrated brine, the organic phase was c...

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Abstract

The invention discloses a novel hole transport layer material and a perovskite solar cell composed by the material. The solar cell comprises a substrate, an anode, a hole transport layer, an active layer, an electron transport layer and a cathode, wherein the active layer is traditional MAPbI3 type perovskite, and the hole transport layer material is a novel star molecule Trux-OMeTAD and derivatives thereof. The prepared perovskite solar cell has a higher open-circuit voltage VOC, a higher short circuit current JSC and a higher fill factor; the highest energy conversion efficiency is 18.8%, which is higher than the efficiency of the perovskite solar cell which uses the traditional hole transport layer material PEDOT:PSS with the same device structure.

Description

technical field [0001] The invention relates to a new material and a solar cell, in particular to a novel hole-transporting layer material and a perovskite solar cell composed of the same. Background technique [0002] The efficient conversion of sunlight into electrical energy through solar cells has always been a focus of attention and research in academia and industry. Inorganic solar cells dominated by silicon-based solar cells are currently the most mature varieties of solar cells, with relatively high photoelectric conversion efficiency, but high energy consumption and pollution in the manufacturing process have brought high production costs, and at the same time Pollution to the surrounding environment. [0003] Solution-processable solar cells can achieve clean, efficient, and large-scale mass production through roll-to-roll technology, which is one of the future development directions of solar cells. Research on the photoelectric conversion efficiency of represent...

Claims

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Application Information

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IPC IPC(8): C07C213/08C07C217/92C07C319/20C07C323/36H01L51/42H01L51/46
CPCC07C217/92C07C323/36C07D333/34H10K85/624H10K85/636H10K85/633H10K85/655H10K85/631H10K30/15Y02E10/549
Inventor 李昌治黄础熠傅伟飞陈红征
Owner ZHEJIANG UNIV
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