ELECTRICALLY-OPERATED DEVICE WITH VARIABLE OPTICAL AND/OR ENERGETIC PROPERTIES

• Main Authors: BETEILLE, FABIEN, MATHEY, GREGOIRE
• Format: Patent
• Language: English; French; German
• Published: 02.03.2005
• Edition: 7
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING

An electrically-operated device with variable optical/energetic transmission or reflection properties comprises at least one support substrate provided with a stack of layers with electrochromic function including at least two active electrochromic layers, separated by an electrolyte. The stack is arranged between two electrical leads, respectively a lower lead closest to the support substrate and an upper lead furthest from the substrate. The electrochromic material constituting the two active layers is identical and is selected from those of which the coloration is not a linear function of the charges inserted. The electrolyte is a self-supporting film of a material containing polyoxyalkylene or polyoxyethylene. The active electrochromic material contains poly(3,4 - ethylene - dioxythiophene) or one of its derivatives.