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Vertical Phase Separation Semiconductor Organic Material Layer

A technology of organic materials and semiconductors, applied in the field of vertical phase-separated semiconductor organic material layers, can solve problems such as hole injection layers and hole transport layers, and achieve the elimination of solvent orthogonality requirements, lower manufacturing costs, and stable operation sex improvement effect

Active Publication Date: 2016-07-13
NISSAN CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Specifically, hole-injection and hole-transport layers can present challenges, for example, due to competing requirements and the need for very thin but high-quality films

Method used

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  • Vertical Phase Separation Semiconductor Organic Material Layer
  • Vertical Phase Separation Semiconductor Organic Material Layer
  • Vertical Phase Separation Semiconductor Organic Material Layer

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0198] Preparation of Oxidized Polythiophene Ink (CE1)

[0199] A stock solution of poly(3,4-(dibutoxyethoxyethoxy)thiophene) in tetrahydropyran was prepared at 0.5% solids by stirring at room temperature for 30-60 minutes. About 0.5 g of silver powder (5-8 microns) was added per 20 mL of solution. The required amount of the above solution was weighed into a clean flask, and an appropriate amount of silver tetrakis(pentafluorophenyl)borate (0.5% solid) dissolved in tetrahydropyran was added dropwise with stirring. The mixture was stirred for an additional 30 minutes at room temperature and filtered through two or more 0.5 micron glass fiber filters. The solution was left to sit for an additional 2 days to complete the oxidation process and filtered again through a 0.5 micron glass fiber filter. The solids content of the ink is measured, then the ink is concentrated to the desired concentration (eg, 1.5%) under low pressure while maintaining the temperature at 25-40°C.

Embodiment 1

[0200] Example 1 - Ink Composition

[0201] Preparation of 1.5% N4,N4'-bis(4-tridecafluorononyloxyphenyl)-N4,N4'-diphenyl-[1,1-biphenyl]-4 in tetrahydropyran, Stock solution of 4'-diamine (C9f13-TPD). The C9f13-TPD solution was added to the pre-weighed oxidized polythiophene ink described above with or without stirring. The solution is then mixed well by simple stirring in a shaker or with a stirrer. The weight percent of C9f13-TPD can be 5, 10, 25, 50, 75 or 90% of the total solids in the ink. The resulting composition was formed on a substrate by spin coating and dried. The films were annealed at 175°C.

Embodiment 2

[0202] Example 2 - Ink Composition

[0203] Preparation of 1.5% N4,N4'-bis(4-vinylphenyl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'diamine in Tetrahydropyran (Sty-TPD) stock solution. Add the C9f13-TPD solution to the pre-weighed oxidized polythiophene ink with or without stirring. The solution is then mixed well by simple stirring in a shaker or with a stirrer. The weight percent of C9f13-TPD can be 5, 10, 25, 50, 75 or 90% of the total solids in the ink. The resulting composition is formed on a substrate and dried. The resulting composition was formed on a substrate by spin coating and dried. The films were annealed at 175°C.

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Abstract

An improved OLED device utilizing vertical phase separation to simplify the process and its fabrication method. The vertical phase separation material may comprise at least one lower first layer disposed on the electrode, and at least one upper second layer different from the first layer and remote from the electrode or optionally disposed on a layer comprising at least one semiconducting organic material. Floor. The first layer is enriched in at least one first semiconducting organic material (SOM1), and the second layer is enriched in at least one second semiconducting organic material (SOM2) different from SOM1. The ink composition may be adapted to vertically phase separate the film into first and second layers. Compositions and devices are also specifically described herein.

Description

[0001] related application [0002] This application claims priority to US Provisional Application 61 / 504,653, filed July 5, 2011, which is hereby incorporated by reference in its entirety. Background technique [0003] Although beneficial progress is being made in energy-efficient devices such as organic-based organic light-emitting diodes (OLEDs), polymer light-emitting diodes (PLEDs), phosphorescent organic light-emitting diodes (PHOLEDs), and organic photovoltaics (OPVs), the Further improvements are needed in terms of processing and performance. For example, a promising class of materials are conjugated conducting polymers including, for example, polythiophenes. However, problems arise with doping, purity, solubility, and processing, especially when complex structures need to be fabricated by solution processing. In particular, for solution processing, it is important to have good control over the solubility of alternating polymer layers (eg, orthogonal or alternating s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L65/00H01B1/12H10K99/00
CPCC08G2261/51C08L65/00C08K5/18C08G2261/1424C08G2261/3162C08G2261/3223C08L2205/02Y02E10/549Y02P70/50H10K71/12H10K85/631H10K50/15H10K50/156H10K50/17H10K2101/30
Inventor 克里斯托弗·T·布朗尼特·乔普拉文卡塔拉曼南·塞沙德里王菁
Owner NISSAN CHEM IND LTD