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Active materials for photoelectric devices and devices that use the materials

An electro-optic device, device technology, applied in the field of conjugated polymer as active layer material for electro-optic devices

Inactive Publication Date: 2011-07-13
RGT UNIV OF CALIFORNIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the energy conversion efficiency of solar cell devices based on these polymers has reached 4–5%, this is much lower than that of inorganic semiconductor solar cells.

Method used

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  • Active materials for photoelectric devices and devices that use the materials
  • Active materials for photoelectric devices and devices that use the materials
  • Active materials for photoelectric devices and devices that use the materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Poly(3,3'-bis(2-ethylhexyl)-silylene-2,2'-bithiophene-5,5'-diyl)-alt-benzo[c][1,2, 5] Synthesis of thiadiazole (HSi-1)

[0074] The synthetic route to this polymer HSi-1 is shown in the scheme below.

[0075]

[0076] 4.78g (10mmol) of 3,3',5,5'-tetrabromo-2,2'-bithiophene (the compound in the scheme above) synthesized by the reported method [Heterocycles; 1991(32), 1805-1812] 1) Dissolve in 150ml ultra-dry THF, cool the solution to -90°C through a liquid nitrogen-methanol bath and stir for 15 minutes. Then 8 ml of a solution of butyllithium in hexane (2.5 mol / L) was added dropwise over 1 hour, and the reaction was stirred for a further 15 minutes. Then 2.7 g of trimethylchlorosilane (25 mmol) was added in one portion and the cooling bath was removed to allow the reaction to warm to ambient temperature. The reaction was then poured into water and extracted several times with ether. Volatile materials were removed in vacuo. The residue was purified by recrystalli...

Embodiment 2

[0082] Fabrication and Characterization of Polymer Solar Cells Using HSi as Active Layer Material

[0083] Polymer HSi (30 mg) was dissolved in chlorobenzene to make 20 mg ml -1 solution and then blended with 60% by weight PCBM.

[0084] Polymer solar cells are fabricated on transparent indium tin oxide (ITO)-coated glass substrates. A thin layer of conductive polymer: poly(3,4-ethylenedioxythiophene) (PEDOT:PSS) doped with poly(styrene sulfonate) was spin-coated on the ITO surface as a better interface. The thickness of the PEDOT:PSS layer was about 30 nm as measured with a Dektek profilometer. Thin layers were then spin-coated from the solution prepared above. Then at about 10 -4 Thin layers of calcium and aluminum are sequentially evaporated at a pressure of Pa. The test is filled with N 2 A xenon lamp solar simulator calibrated with a silicon diode (with KG5 visible light filter) calibrated in the National Renewable Energy Laboratory (NREL) was irradiated at AM 1.5G ...

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Abstract

A conjugated polymer has a repeated unit having the structure of formula (I) wherein n is an integer greater than 1, R1 and R2 are independently selected from alkyl groups with up to 18 C atoms, aryls and substituted aryls, and wherein Ar is selected from monocyclic, bicyclic and polycyclic arylene, or monocyclic, bicyclic and polycyclic heteroarylene, or may contain one to five such groups, either fused or linked.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application 61 / 089,797, filed August 18, 2008, which is hereby incorporated by reference in its entirety. technical field [0003] Embodiments of the present invention relate to active materials for electro-optical devices and electro-optical devices using the same; more particularly, to conjugated polymers as active layer materials for electro-optic devices. Background technique [0004] The contents of all references (including articles, published patent applications, and patents) cited herein are hereby incorporated by reference. [0005] Electronic devices based on organic materials (small molecules and polymers) have attracted a lot of attention. Such devices include organic light-emitting devices (OLEDs) (Tang, C.W.; VanSlyke, S.A.; Appl.Phys.Lett.1987, 51, 913), organic photovoltaic cells (OPV) (Tang, C.W.Appl.Phys.Lett.1986, 48, 183), transistors (Bao, Z; Lov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/00
CPCH01L51/0037H01L51/0094H01L51/4253C08G2261/91C08G2261/3247H01L51/0036Y02E10/549C08G61/123C08G2261/3246H01L51/0043H10K85/113H10K85/1135H10K85/151H10K85/40H10K30/30H10K30/50
Inventor 杨阳侯剑辉陈香妤
Owner RGT UNIV OF CALIFORNIA