EP1602006A1 - Electrochromic component - Google Patents

Electrochromic component

Info

Publication number
EP1602006A1
EP1602006A1 EP04712022A EP04712022A EP1602006A1 EP 1602006 A1 EP1602006 A1 EP 1602006A1 EP 04712022 A EP04712022 A EP 04712022A EP 04712022 A EP04712022 A EP 04712022A EP 1602006 A1 EP1602006 A1 EP 1602006A1
Authority
EP
European Patent Office
Prior art keywords
electrochromic
electrode
color
layer
component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04712022A
Other languages
German (de)
French (fr)
Inventor
Christoph Brabec
Jens Hauch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1602006A1 publication Critical patent/EP1602006A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/1514—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material
    • G02F1/1516—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material comprising organic material
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F2001/1502—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect complementary cell

Definitions

  • the invention relates to an electrochromic component, for example a “smart window” 8 with improved color contrast.
  • Electrochromic components (smart windows and / or displays) which, in the most general case, have a first, preferably transparent (optionally colored) electrode, a subsequent electrochromic layer, an electrolyte layer, an ion storage device and a second, optionally also colored or transparent Counter electrode work.
  • Layer as well as a partially absorbing (partially transmitting light) electrode.
  • This also includes organic materials such as PEDOT / PSS or P7 ⁇ NI. Layers made of these materials such as P7 ⁇ NI and / or PEDOT / PSS can be used with sufficient conductivity
  • organic electrochromic component * (depending on the degree of doping) also take over the function of the electrode, so that in extreme cases an organic electrochromic component only comprises 3 active layers of predominantly organic material (partial substitutions by inorganic materials, which may have been known in semiconductor technology for a long time, are always possible and should not be excluded by the term "organic electrochromic component *):
  • Electrode layer there is a first partially absorbing electrode on a substrate, which also shows electrochromic effects, an electrolyte layer on top of it and then another electrochromic layer, which under certain circumstances also acts as an ion store and which also has an electrode layer due to the high conductivity of the electrochromic, as ion store acting material can collapse.
  • ion store acting material can collapse.
  • the object of the invention is to increase the color contrast of conventional electrochromic components.
  • the subject matter of the invention is an electrochromic component, comprising two electrochromically active electrodes and an electrolyte layer in between, the electrode and the counterelectrode being selected such that they display a complementary switchable electrochromic color behavior, in that one electrode shows positive and the other shows negative voltage electrochromic discolored.
  • the counter electrode preferably also serves as an ion store.
  • This organic layer also has an electrochromic color effect. In contrast to transparent ion storage, this creates an additional color effect and the color contrast on displays or “smart windows *” is significantly increased.
  • the invention enables, for example, an organic electrochromic component to be constructed with the function of a “smart Windows *. (A display would also be conceivable).
  • a polymer is used here as the ion storage, which also produces an electrochromic effect (e.g. PANI).
  • Electrochromism is possible through the use of two organic materials (or an organic material with different doping and thus complementarily switchable electrochromic color behavior) as the electrode and counter electrode of an electrochromic component, the function of (i) ion storage, (ii) the counter electrode and (iii) an additional electrochromic layer for more intense color effects in a single layer.
  • a smart Windows in which the one organic electrochromic layer takes over the function of the ion storage.
  • the two electrochromic layers are applied to electrode substrates (or, if there is sufficient conductivity, act as electrodes themselves, in the latter case the two separate layers for the electrode and counterelectrode can be omitted in addition to the two electrochromic layers) and are connected to one another by means of an electrolyte layer.
  • the system can also be produced by printing the individual layers on top of one another, in which case a polymer electrolyte is used.
  • the electrochromic component is produced by - (a) printing the electrode I and / or the electrochromic layer I, - (b) printing the electrolyte layer and - (c) printing the second electrochromic layer, which optionally includes an ion storage device and the counter electrode.

Abstract

The invention relates to an electrochromic component, for example, a smart window having an improved color contrast. The color contrast is increased by two electrodes that, together, exhibit a complementarily switchable electrochromic color characteristic by virtue of the fact that one electrode electrochemically changes color in the event of positive voltage and the other electrode electrochemically changes color in the event of negative voltage.

Description

Beschreibungdescription
Elektrochromes BauteilElectrochromic component
Die Erfindung betrifft ein elektrochromes Bauteil, beispielsweise ein „smart window'8 mit verbessertem Farbkontrast.The invention relates to an electrochromic component, for example a “smart window” 8 with improved color contrast.
Bekannt sind elektrochrome Bauteile (smart Windows und/oder Displays) , die im allgemeinsten Fall über eine erste, bevor- zugt transparente (optional farbige) Elektrode, eine darauffolgenden elektrochrome Schicht, einer Elektrolytschicht, einem Ionenspeicher und einer zweiten, optional auch farbigen oder transparenten Gegenelektrode funktionieren.Electrochromic components (smart windows and / or displays) are known which, in the most general case, have a first, preferably transparent (optionally colored) electrode, a subsequent electrochromic layer, an electrolyte layer, an ion storage device and a second, optionally also colored or transparent Counter electrode work.
Es gibt Materialien, die sich sowohl als elektrochromeThere are materials that are both electrochromic
Schicht als auch als teilabsorbierende (das Licht zum Teil durchlassende) Elektrode eignen. Darunter fallen auch organische Materialien, wie zum Beispiel PEDOT/PSS oder P7ΛNI . Schichten aus diesen Materialien wie beispielsweise P7ΛNI und/oder PEDOT/PSS können bei hinreichender LeitfähigkeitLayer as well as a partially absorbing (partially transmitting light) electrode. This also includes organic materials such as PEDOT / PSS or P7ΛNI. Layers made of these materials such as P7ΛNI and / or PEDOT / PSS can be used with sufficient conductivity
(vom Dotierungsgrad abhängig) auch die Funktion der Elektrode übernehmen, so dass ein organisches elektrochromes Bauteil im Extremfall nur mehr 3 aktive Schichten aus vorwiegend organischem Material umfasst (Teilsubstitutionen durch anorgani- sehe, unter Umständen in der Halbleitertechnologie seit langem bekannte, Materialien sind immer möglich und sollen durch den Begriff „organisches elektrochromes Bauteil* nicht ausgeschlossen sein) :(depending on the degree of doping) also take over the function of the electrode, so that in extreme cases an organic electrochromic component only comprises 3 active layers of predominantly organic material (partial substitutions by inorganic materials, which may have been known in semiconductor technology for a long time, are always possible and should not be excluded by the term "organic electrochromic component *):
Beispiel für eine Schichtfolge:Example of a layer sequence:
Auf einem Substrat befindet sich eine erste teilabsorbierende Elektrode, die auch elektrochrome Effekte zeigt, darauf eine Elektrolyt-Schicht und anschließend eine weitere elektrochrome Schicht, die unter Umständen auch als Ionenspeicher wirkt und die auch mit einer Elektrodenschicht durch die hohe Leitfähigkeit des elektrochromen, als Ionenspeicher wirkenden Materials zusammenfallen kann. In der Regel existiert jedoch eine separate Ionenspeicher- schicht. Dazu werden zur Zeit anorganische Keramiken, wie z.B. Vn2θ5 oder Ti02, verwendet. Diese Ionenspeicherschichten sind transparent und leisten daher keinen Beitrag zum Farbkontrast des Bauteils.There is a first partially absorbing electrode on a substrate, which also shows electrochromic effects, an electrolyte layer on top of it and then another electrochromic layer, which under certain circumstances also acts as an ion store and which also has an electrode layer due to the high conductivity of the electrochromic, as ion store acting material can collapse. However, there is usually a separate ion storage layer. Inorganic ceramics such as Vn 2 θ5 or Ti0 2 are currently used for this. These ion storage layers are transparent and therefore make no contribution to the color contrast of the component.
Aufgabe der Erfindung ist es, den Farbkontrast herkömmlicher elektrochromer Bauteile zu erhöhen.The object of the invention is to increase the color contrast of conventional electrochromic components.
Gegenstand der Erfindung ist ein elektrochromes Bauteil, zwei elektrochrom aktive Elektroden und dazwischen eine Elektrolytschicht umfassend, wobei die Elektrode und die Gegenelektrode so ausgewählt sind, dass sie ein komplementär schaltba- res elektrochromes Farbverhalten zeigen, indem sich die eine Elektrode bei positiver und die andere bei negativer Spannung elektrochrom verfärbt.The subject matter of the invention is an electrochromic component, comprising two electrochromically active electrodes and an electrolyte layer in between, the electrode and the counterelectrode being selected such that they display a complementary switchable electrochromic color behavior, in that one electrode shows positive and the other shows negative voltage electrochromic discolored.
Bevorzugt dient die Gegenelektrode auch als Ionenspeicher.The counter electrode preferably also serves as an ion store.
Dadurch ist der Ersatz der anorganischen Ionenspeicherschicht durch eine organische Schicht möglich. Diese organische Schicht verfügt ebenfalls über einen elektrochromen Farbeffekt. Dadurch wird, im Unterschied zu transparenten Ionen- Speicher, ein zusätzlicher Farbeffekt hervorgerufen und der Farbkontrast bei Displays oder „smart Windows* deutlich erhöht werden.This makes it possible to replace the inorganic ion storage layer with an organic layer. This organic layer also has an electrochromic color effect. In contrast to transparent ion storage, this creates an additional color effect and the color contrast on displays or “smart windows *” is significantly increased.
Durch die Erfindung lässt sich beispielsweise ein organisches elektrochromes Bauteil, mit der Funktion eines „smart Windows* aufbauen. (Ebenso wäre ein Display denkbar) . Als Ionenspeicher wird hier ein Polymer verwendet, das ebenfalls einen elektrochromen Effekt hervorruft (z.B. PANI) .The invention enables, for example, an organic electrochromic component to be constructed with the function of a “smart Windows *. (A display would also be conceivable). A polymer is used here as the ion storage, which also produces an electrochromic effect (e.g. PANI).
Damit sich das smart window nach wie vor zwischen den Zuständen „dunkel* und „hell* schalten lässt, ist es nötig, dass die beiden elektrochromen Schichten ein komplementär schalt- bares elektrochromes Farbverhalten zeigen. Es ist also möglich, durch Anlegen einer geeigneten Spannung beide elektrochrome Schichten transparent zu machen (hell oder „aus*- Zustand) als auch beide Schichten zu verfärben (dunkel oder „einΩ- Zustand) . Dadurch erreicht man (i) Einen höheren FarbkontrastSo that the smart window can still be switched between the states "dark * and" light *, it is necessary that the two electrochromic layers switch a complementary show clear electrochromic color behavior. It is therefore possible to make both electrochromic layers transparent (light or "off * - state) and to discolor both layers (dark or" an Ω - state) by applying a suitable voltage. This gives (i) a higher color contrast
(ii) Eine größere Auswahl an organischen Schichtmaterialien für den Ionenspeicher(ii) A wider range of organic layer materials for ion storage
Überraschend hat sich gezeigt, dass es in der organischenSurprisingly, it has been shown that it is organic
Elektrochromie möglich ist, durch die Verwendung zweier organischer Materialien (oder eines organischen Materials unterschiedlicher Dotierung und damit komplementär schaltbarem e- lektrochromen Farbverhalten) als Elektrode und Gegenelektrode eines elektrochromen Bauteils die Funktion des (i) Ionenspeichers, (ii) der Gegenelektrode und (iii) einer zusätzlichen elektrochromen Schicht für intensivere Farbeffekte in einer einzigen Schicht zu realisieren.Electrochromism is possible through the use of two organic materials (or an organic material with different doping and thus complementarily switchable electrochromic color behavior) as the electrode and counter electrode of an electrochromic component, the function of (i) ion storage, (ii) the counter electrode and (iii) an additional electrochromic layer for more intense color effects in a single layer.
Ausführungsbeispiel [e] der Erfindung:Exemplary embodiment of the invention:
Ein smart Windows (displays) , bei dem die eine organische elektrochrome Schicht die Funktion des Ionenspeichers übernimmt. Die beiden elektrochromen Schichten werden auf Elektrodensubstraten aufgebracht (oder fungieren, bei hinreichen- der Leitfähigeit selbst als Elektroden, in letzterem Fall können die zwei separaten Schichten für Elektrode und Gegenelektrode zusätzlich zu den zwei elektrochromen Schichten weggelassen werden) und werden mittels einer Elektrolytschicht miteinander verbunden.A smart Windows (displays), in which the one organic electrochromic layer takes over the function of the ion storage. The two electrochromic layers are applied to electrode substrates (or, if there is sufficient conductivity, act as electrodes themselves, in the latter case the two separate layers for the electrode and counterelectrode can be omitted in addition to the two electrochromic layers) and are connected to one another by means of an electrolyte layer.
Alternativ kann das System auch durch Drucken der einzelnen Schichten übereinander hergestellt werden, in dem Fall wird ein Polymerelektrolyt verwendet. Das elektrochrome Bauteil wird durch -(a) Drucken der Elektrode I und/oder der elektrochromen Schicht I, - (b) Drucken der Elektrolytschicht und -(c) Drucken der zweiten elektrochromen Schicht, die gegebenenfalls einen Ionenspeicher und die Gegenelektrode mitum-Alternatively, the system can also be produced by printing the individual layers on top of one another, in which case a polymer electrolyte is used. The electrochromic component is produced by - (a) printing the electrode I and / or the electrochromic layer I, - (b) printing the electrolyte layer and - (c) printing the second electrochromic layer, which optionally includes an ion storage device and the counter electrode.
IdSS L • IdSS L •

Claims

Patentansprüche claims
1. Elektrochromes Bauteil, zwei elektrochrom aktive Elektroden und dazwischen eine Elektrolytschicht umfassend, wobei die Elektrode und die Gegenelektrode so ausgewählt sind, dass sie ein komplementär schaltbares elektrochromes Farbverhalten zeigen, indem sich die eine Elektrode bei positiver und die andere bei negativer Spannung elektrochrom verfärbt.1. Electrochromic component, comprising two electrochromically active electrodes and an electrolyte layer in between, the electrode and the counterelectrode being selected such that they display a complementarily switchable electrochromic color behavior, in that one electrode discolors when the voltage is positive and the other when it is negative.
2. Bauteil nach Anspruch 1, das im wesentlichen aus organischen Materialien aufgebaut ist.2. Component according to claim 1, which is composed essentially of organic materials.
3. Bauteil nach einem der vorstehenden Ansprüche, wobei die eine Elektrode aus PANI und die Gegenelektrode aus3. Component according to one of the preceding claims, wherein the one electrode made of PANI and the counter electrode
PEDOT/PSS gefertigt ist. PEDOT / PSS is manufactured.
EP04712022A 2003-03-12 2004-02-18 Electrochromic component Withdrawn EP1602006A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10311184 2003-03-12
DE10311184 2003-03-12
PCT/EP2004/001548 WO2004081644A1 (en) 2003-03-12 2004-02-18 Electrochromic component

Publications (1)

Publication Number Publication Date
EP1602006A1 true EP1602006A1 (en) 2005-12-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04712022A Withdrawn EP1602006A1 (en) 2003-03-12 2004-02-18 Electrochromic component

Country Status (2)

Country Link
EP (1) EP1602006A1 (en)
WO (1) WO2004081644A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2045656A1 (en) 2007-10-01 2009-04-08 Siemens Aktiengesellschaft Switch with a plane display
CN103996549B (en) * 2014-06-10 2016-08-31 北京理工大学 A kind of preparation method of cellulose nano-fibrous electrochromism ultracapacitor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6828062B2 (en) * 2000-12-23 2004-12-07 Santa Fe Science And Technology, Inc. Long-lived conjugated polymer electrochemical devices incorporating ionic liquids

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004081644A1 *

Also Published As

Publication number Publication date
WO2004081644A1 (en) 2004-09-23

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