WO2005036667A1 - N- dotierung von organischen halbleitern - Google Patents
N- dotierung von organischen halbleitern Download PDFInfo
- Publication number
- WO2005036667A1 WO2005036667A1 PCT/DE2004/002247 DE2004002247W WO2005036667A1 WO 2005036667 A1 WO2005036667 A1 WO 2005036667A1 DE 2004002247 W DE2004002247 W DE 2004002247W WO 2005036667 A1 WO2005036667 A1 WO 2005036667A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- semiconductor material
- doped
- charge carrier
- dopant
- diode
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/344—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising ruthenium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/30—Doping active layers, e.g. electron transporting layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/20—Carbon compounds, e.g. carbon nanotubes or fullerenes
- H10K85/211—Fullerenes, e.g. C60
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/311—Phthalocyanine
Definitions
- the invention relates to doped organic semiconductor materials with increased charge carrier density and effective charge carrier mobility as well as a method for their production.
- organic dopants Compared to doping methods with inorganic materials, which on the one hand involve diffusion problems of the doping material used in the form of relatively small molecules or atoms and on the other hand undesirable unpredictable chemical reactions between matrix and doping material, the use of organic molecules as doping material has proven to be advantageous.
- organic dopants have a higher stability of the components, and the diffusion plays a subordinate role, so that the defined production of sharp transitions from p-doped to n-doped regions is simplified.
- Doping with organic molecules only results in a charge transfer between see matrix and dopant, but no chemical bond is formed between them.
- the doping concentration for obtaining a high conductivity of the doped layer in the case of organic dopants is advantageously at least one size unit below that of inorganic dopants.
- the doping of organic semiconductor materials with organic compounds is essentially known in two different processes, namely doping with air-stable dopants and doping with a stable precursor substance to release a dopant that is not stable in the air.
- air-stable organic dopants do not have a sufficiently low oxidation potential to be used for the use of technically relevant electron transport materials with a lower reduction potential.
- the released compounds can have a sufficiently low oxidation potential for use as electron transport materials that are used in organic solar cells, but not for the use of organic light emitting diodes.
- the object of the present invention is therefore to improve the electrical properties of (opto) electronic components, such as, for example, organic light-emitting diodes or solar cells which are based on organic semiconductor materials.
- the ohmic losses in charge carrier transport layers are to be reduced and the contact properties Shafts can be improved.
- the object is achieved by the production method according to claim 1, by the product obtainable therefrom according to claim 11 and by a diode obtainable using the product according to claim 18.
- the dopant being produced by electrocrystallization in a first step, the dopant is selected from a group of organic compounds with a low oxidation potential, and wherein an organic semiconductor material is doped with the dopant in a second step, the use of easily accessible organic salts as starting materials for organic dopants is made possible.
- the method therefore makes a new or a further class of dopants available, which has preferred properties over the materials used hitherto, in particular with regard to the parameter of the oxidation potential.
- a salt of the organic dopant is used as the starting material for the electrocrystallization.
- the organic dopant is typically simple or multiply charged cation in the salt of the starting material.
- a single or multiply charged cation is used in the educt salt of the organic dopant. Electrocrystallization makes it possible to obtain the dopant contained in a salt form as an ion in the neutral state as a pure intermediate.
- the dopant is an uncharged organic compound.
- organic dopants is advantageous over inorganic dopants in terms of less undesired diffusion of the dopants in the matrix, higher stability and lower costs and in terms of procuring the starting material.
- the dopant can be crystallized out on a working electrode and then harvested on the working electrode.
- the dopant is usually only sparingly soluble in the solvent used in the electrocrystallization and can therefore be deposited almost completely on the electrode.
- the dopant which is typically unstable in air, can be stored and, if necessary, transported under an inert gas atmosphere or, if necessary, transported.
- the Dotancl can be cleaned in an additional intermediate step after harvesting on a working electrode.
- the cleaning can be, for example, drying or another type of purification known in the prior art.
- Urification the dopant is then kept ready for a further step for processing with the semiconductor material under an inert gas atmosphere. The dopant is thus available in the purest possible state.
- the dopant is preferably mixed into the organic semiconductor material.
- a connection to a Oxidation potential of less than 0 V against NHE is used.
- a compound with an oxidation potential in the range from - 0.5 V against NHE to - 2.5 V against NHE is preferably used as dopant.
- Bis (2, 2 '-terpyridine) ruthenium or tris (4, 4', 5, 5 '-tetramethyl-2, 2'-bypyridine) chromium is particularly preferably used as dopant, with bis (2, 2' -terpyridine) ruthenium has an oxidation potential of - 1.28 V against NHE and tris (4, 4 ', 5, 5' -tetramethyl-2, 2 '-bipyridine) chromium has an oxidation potential of - 1.44 V against NHE.
- fullerene Cßo (with a reduction potential of - 0.98 V against Fc / Fc + ), tris (8-hydroxyquinolinato) aluminum (with a reduction potential of - 2.3 V against Fc / Fc + ) are used as organic semiconductors ), Bathoph.enath.ro1in (with an electron affinity of 3.0 eV) or phthalocyanine zinc (with a reduction potential of about - 0.65 V against NHE), but are not restricted to this.
- a method according to the invention can produce a doped organic semiconductor material with increased charge carrier density and effective charge carrier mobility.
- the semiconductor material is preferably doped with bis (2,2'-terpyridine) ruthenium.
- the semiconductor material can be chromium-doped with tris (4, 4 ', 5, 5' -tetramethyl-2, 2 '-bipyridine).
- the matrix of the semiconductor material consists essentially of fullerene.
- the matrix of the semiconductor material can consist essentially of phthalocyanine zinc.
- the semiconductor material has a conductivity of about 10 "1 S / cm at room temperature, the matrix of the semiconductor material consisting essentially of fullerene and the semiconductor material having bis (2, 2 '- terpyridine) ruthenium (doped.
- the semiconductor material can have a conductivity of about 10 ⁇ 6 S / cm at room temperature, the matrix of the semiconductor material essentially consisting of phthalocyanine zinc and the semiconductor material containing bis (2,2 '- terpyridine) ruthenium is doped.
- the doped organic semiconductor material is expediently part of an organic diode, the diode being made of a metal-insulator-N-doped semiconductor (min) junction or a p-doped semiconductor-insulator-N-doped semiconductor (pin).
- the diode can have a rectification ratio of at least 10 5 .
- the diode can have a built-in voltage of approximately 0.8 V.
- a built-in voltage of 0.8 V is particularly advantageous for the production of organic solar cells.
- Figure 1 shows an EcLuktkation and the neutral complex obtainable therefrom by the inventive method.
- ruthenium bis (2,2'-terpyridine) ruthenium ([Ru (terpy)]) is used as the organic dopant.
- the neutral ruthenium complex is produced from its salt by electrocrystallization in an electrochemical cell.
- the Salt is a conventional compound in which the complex has a double positive charge.
- the complex [Ru (terpy)] 2+ (PF 6 " ) 2 is used as salt.
- the neutral form of the complex - [Ru (terpy)] 0 - is created by the uptake of two electrons by the cation complex [Ru (terpy)] 2+ .
- the neutral complex [Ru (terpy)] 0 is poorly soluble in the solvent used in the electrocrystallization and is thus deposited on the working electrode in the electrochemical cell.
- the neutral complex has a very low oxidation potential and is therefore very sensitive to oxygen and other contaminants. Accordingly, the electrochemical reduction must be carried out under protective gas and in compliance with strict purity criteria for the solvent used.
- the neutral complex [Ru (terpy)] 0 is then harvested and filled into ampoules. These are then welded under protective gas.
- Doped layers are produced by mixed evaporation of matrix and dopant or by another process.
- organic diodes of the type Metal-insulator-N-doped semiconductor (min) manufactured (based on phthalocyanine zinc). These diodes have a certification ratio of 10 5 and higher and a high built-in voltage of 0.8V. A built-in voltage of 0.8 V is particularly advantageous for the production of organic solar cells.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006529630A JP5089983B2 (ja) | 2003-10-10 | 2004-10-08 | 有機半導体のn‐ドーピング |
US10/595,319 US20070278479A1 (en) | 2003-10-10 | 2004-10-08 | N-Doping Of Organic Semiconductors |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10347856A DE10347856B8 (de) | 2003-10-10 | 2003-10-10 | Halbleiterdotierung |
DE10347856.6 | 2003-10-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005036667A1 true WO2005036667A1 (de) | 2005-04-21 |
Family
ID=34428422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/002247 WO2005036667A1 (de) | 2003-10-10 | 2004-10-08 | N- dotierung von organischen halbleitern |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070278479A1 (de) |
JP (1) | JP5089983B2 (de) |
DE (1) | DE10347856B8 (de) |
TW (1) | TWI265649B (de) |
WO (1) | WO2005036667A1 (de) |
Cited By (13)
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WO2008155310A1 (de) * | 2007-06-20 | 2008-12-24 | Siemens Aktiengesellschaft | Halbleitendes material und organische gleichrichterdiode |
WO2008154915A1 (de) * | 2007-06-20 | 2008-12-24 | Osram Opto Semiconductors Gmbh | Verwendung eines metallkomplexes als p-dotand für ein organisches halbleitendes matrixmaterial, organisches halbleitermaterial und elektronisches bauteil |
WO2008154914A1 (de) * | 2007-06-20 | 2008-12-24 | Osram Opto Semiconductors Gmbh | Verwendung eines metallkomplexes als p-dotand für ein organisches halbleitendes matrixmaterial, organisches halbleitermaterial und organische leuchtdioden |
WO2009021663A1 (de) * | 2007-08-10 | 2009-02-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Dotiertes halbleitermaterial und dessen verwendung |
DE102010031829A1 (de) | 2009-07-21 | 2011-02-03 | Novaled Ag | Thermoelektrische Bauelemente mit dünnen Schichten |
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DE102010031979A1 (de) | 2010-07-22 | 2012-01-26 | Novaled Ag | Halbleiterbauelement |
WO2012114316A1 (en) | 2011-02-25 | 2012-08-30 | Ecole Polytechnique Federale De Lausanne (Epfl) | Metal complexes for use as dopants and other uses |
EP2551949A1 (de) | 2011-07-28 | 2013-01-30 | Ecole Polytechnique Fédérale de Lausanne (EPFL) | Metallkomplexe zur Verwendung als Dotierungsmittel und andere Verwendungen |
WO2013055410A1 (en) | 2011-06-14 | 2013-04-18 | Georgia Tech Research Corporation | N-doping of organic semiconductors by bis-metallosandwich compounds |
DE102012100642A1 (de) | 2012-01-26 | 2013-08-01 | Novaled Ag | Anordnung mit mehreren organischen Halbleiterbauelementen und Verfahren zum Herstellen |
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- 2004-10-08 TW TW093130645A patent/TWI265649B/zh active
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EP2551949A1 (de) | 2011-07-28 | 2013-01-30 | Ecole Polytechnique Fédérale de Lausanne (EPFL) | Metallkomplexe zur Verwendung als Dotierungsmittel und andere Verwendungen |
DE102012100642A1 (de) | 2012-01-26 | 2013-08-01 | Novaled Ag | Anordnung mit mehreren organischen Halbleiterbauelementen und Verfahren zum Herstellen |
WO2013110268A1 (de) | 2012-01-26 | 2013-08-01 | Novaled Ag | Anordnung mit mehreren organischen halbleiterbauelementen und verfahren zum herstellen |
Also Published As
Publication number | Publication date |
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TW200514289A (en) | 2005-04-16 |
US20070278479A1 (en) | 2007-12-06 |
JP2007512681A (ja) | 2007-05-17 |
TWI265649B (en) | 2006-11-01 |
DE10347856B8 (de) | 2006-10-19 |
JP5089983B2 (ja) | 2012-12-05 |
DE10347856A1 (de) | 2005-06-02 |
DE10347856B4 (de) | 2006-07-06 |
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