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light emitting electrochemical cell wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 see also 2 references toggle the table of contents light emitting electrochemical cell 2 languages deutsch italiano edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia light generation methodology a light emitting electrochemical cell lec or leec is a solid state device that generates light from an electric current electroluminescence lecs are usually composed of two metal electrodes connected by e g sandwiching an organic semiconductor containing mobile ions aside from the mobile ions their structure is very similar to that of an organic light emitting diode oled lecs have most of the advantages of oleds as well as additional ones the device is less dependent on the difference in work function of the electrodes consequently the electrodes can be made of the same material e g gold similarly the device can still be operated at low voltages 1 2 recently developed materials such as graphene 3 or a blend of carbon nanotubes and polymers 4 have been used as electrodes eliminating the need for using indium tin oxide for a transparent electrode the thickness of the active electroluminescent layer is not critical for the device to operate this means that lecs can be printed 5 with relatively inexpensive printing processes where control over film thicknesses can be difficult in a planar device configuration internal device operation can be observed directly 6 there are two distinct types of lecs those based on inorganic transition metal complexes itmc or light emitting polymers itmc devices are often more efficient than their lep based counterparts due to the emission mechanism being phosphorescent rather than fluorescent 7 while electroluminescence had been seen previously in similar devices the invention of the polymer lec is attributed to pei et al 8 since then numerous research groups and a few companies have worked on improving and commercializing the devices in 2012 the first inherently stretchable lec using an elastomeric emissive material at room temperature was reported dispersing an ionic transition metal complex into an elastomeric matrix enables the fabrication of intrinsically stretchable light emitting devices that possess large emission areas 175 mm2 and tolerate linear strains up to 27 and repetitive cycles of 15 strain this work demonstrates the suitability of this approach to new applications in conformable lighting that require uniform diffuse light emission over large areas 9 in 2012 fabrication of organic light emitting electrochemical cells lecs using a roll to roll compatible process under ambient conditions was reported 10 in 2017 a new design approach developed by a team of swedish researchers promised to deliver substantially higher efficiency 99 2 cd a 1 at a bright luminance of 1910 cd m 2 11 see also edit electrochemical cell electrochemiluminescence light emitting diode organic light emitting diode photoelectrolysis references edit gao j dane j 2003 planar polymer light emitting electrochemical cells with extremely large interelectrode spacing applied physics letters 83 15 3027 bibcode 2003apphl 83 3027g doi 10 1063 1 1618948 shin j h dzwilewski a iwasiewicz a xiao s fransson å ankah g n edman l 2006 light emission at 5 v from a polymer device with a millimeter sized interelectrode gap applied physics letters 89 1 013509 bibcode 2006apphl 89a3509s doi 10 1063 1 2219122 matyba p yamaguchi h eda g chhowalla m edman l robinson n d 2010 graphene and mobile ions the key to all plastic solution processed light emitting devices acs nano 4 2 637 42 bibcode 2010acsna 4 637m citeseerx 10 1 1 474 2436 doi 10 1021 nn9018569 pmid 20131906 cite journal cite uses deprecated parameter citeseerx help yu z hu l liu z sun m wang m grüner g pei q 2009 fully bendable polymer light emitting devices with carbon nanotubes as cathode and anode applied physics letters 95 20 203304 bibcode 2009apphl 95t3304y doi 10 1063 1 3266869 mauthner g landfester k kock a bruckl h kast m stepper c list e j w 2008 inkjet printed surface cell light emitting devices from a water based polymer dispersion organic electronics 9 2 164 70 doi 10 1016 j orgel 2007 10 007 gao j dane j 2004 visualization of electrochemical doping and light emitting junction formation in conjugated polymer films applied physics letters 84 15 2778 bibcode 2004apphl 84 2778g doi 10 1063 1 1702126 tang shi edman ludvig 2016 06 13 light emitting electrochemical cells a review on recent progress topics in current chemistry 374 4 40 doi 10 1007 s41061 016 0040 4 issn 2365 0869 pmid 27573392 s2cid 5205115 pei q b yu g zhang c yang y heeger a j 1995 polymer light emitting electrochemical cells science 269 5227 1086 8 bibcode 1995sci 269 1086p doi 10 1126 science 269 5227 1086 pmid 17755530 s2cid 36807816 filiatrault h l porteous g c carmichael r s davidson g j e carmichael t b 2012 stretchable light emitting electrochemical cells using an elastomeric emissive material advanced materials 24 20 2673 8 bibcode 2012adm 24 2673f doi 10 1002 adma 201200448 pmid 22451224 s2cid 13047158 sandström a dam h f krebs f c edman l 2012 ambient fabrication of flexible and large area organic light emitting devices using slot die coating nature communications 3 1002 bibcode 2012natco 3 1002s doi 10 1038 ncomms2002 pmc 3432459 pmid 22893126 tang s sandström a lundberg p lanz t larsen c van reenen s kemerink m edman l 30 october 2017 design rules for light emitting electrochemical cells delivering bright luminance at 27 5 percent external quantum efficiency nature communications 8 1190 2017 1190 bibcode 2017natco 8 1190t doi 10 1038 s41467 017 01339 0 pmc 5662711 pmid 29085078 v t e display technology video displays past generation eidophor cathode ray tube crt jumbotron electroluminescent display eld rear projection display plasma display panel pdp alis current generation quantum dot display qled electronic paper e ink gyricon light emitting diode display led organic light emitting diode oled active matrix organic light emitting diode amoled liquid crystal display lcd tft tn ips led backlit blue phase digital light processing dlp liquid crystal on silicon lcos next generation microled electroluminescent quantum dots elqd qd led organic light emitting transistor olet surface conduction electron emitter display sed field emission display fed laser tv quantum dot liquid crystal mems display imod tmos ferroelectric liquid crystal display flcd thick film dielectric electroluminescent technology tdel non video electromechanical flip dot split flap eggcrate fiber optic nixie tube vacuum fluorescent display vfd light emitting electrochemical cell lec lightguide display dot matrix display seven segment display eight segment display nine segment display fourteen segment display sixteen segment display 3d display stereoscopic autostereoscopic multiscopic hologram holographic display computer generated holography volumetric fog display static media monoscope movie projector neon sign slide projector transparency laser beam display capabilities edid cea 861 displayid always on display see through display related articles scan line history of display technology large screen television technology optimum hdtv viewing distance high dynamic range hdr color light output flexible display comparison of crt lcd plasma and oled displays comparison of display technology this electronics related article is a stub you can help wikipedia by adding missing information v t e retrieved from https en wikipedia org w index php title light emitting_electrochemical_cell oldid 1369617004 categories display technology molecular electronics conductive polymers electronics stubs hidden categories articles with short description short description is different from wikidata cs1 errors deprecated parameters all stub articles this page was last edited on 16 august 2026 at 02 14 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct 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