Abaphandi baphuhlise kwaye babonise ukukhanya okuluhlaza okutsha okufunxa iifoto ze-organic photodetectors ezinovakalelo kakhulu kwaye ziyahambelana neendlela zokuvelisa zeCMOS. Ukubandakanya ezi photodetectors zitsha kwi-silicone hybrid image sensors kunokuba luncedo kwizicelo ezininzi. Ezi zicelo zibandakanya ukukhanya kwesantya sentliziyo, ukuqaphela iminwe kunye nezixhobo ezibona ubukho bezinto ezikufutshane.
Nokuba zisetyenziswa kwii-smartphones okanye kwiikhamera zesayensi, uninzi lweesensonsi zokucinga namhlanje zisekwe kwitekhnoloji yeCMOS kunye ne-inorganic photodetectors eziguqula imiqondiso yokukhanya ibe ziimpawu zombane. Nangona ii-photodetectors ezenziwe ngezinto eziphilayo zitsala umdla kuba zinokunceda ukuphucula ubuntununtunu, kude kube ngoku kungqineke kunzima ukwenza ii-photodetectors ze-organic ezisebenza kakhulu.
Umphandi okhokeleyo u-Sungjun Park, weYunivesithi yaseAjou eMzantsi Korea, uthe: “Ukudibanisa ii-photodetectors zendalo kwi-CMOS eveliswe ngobuninzi boluvo kufuna izinto ezifunxa ukukhanya ekulula ukuzenza ngomlinganiselo omkhulu kwaye ezikwaziyo ukuqondwa komfanekiso ocacileyo ukuvelisa imifanekiso ebukhali. kumazinga aphezulu esakhelo ebumnyameni. Senze iifotodiodi zendalo ezingafihliyo, ezinokuthi zifikelele ezi mfuno. ”
Abaphandi bachaza i-photodetector entsha yendalo kwijenali ye-Optica. Bakwayile inzwa ye-imaging ye-RGB ye-hybrid ngokubeka ngaphezulu ukukhanya okuluhlaza okufunxa i-organic photodetector kwi-silicon photodiode enezihluzi ezibomvu nezibhlowu.
UKyung-Bae Park, inkokeli yeqela lophando kwi-Samsung Advanced Institute of Technology (SAIT) eMzantsi Korea, uthe: “Enkosi ngokwaziswa komgangatho we-organic buffer layer, umaleko okhethiweyo oluhlaza ofunxa ukukhanya osetyenzisiweyo. Kwezi zivamvo zemifanekiso zinciphisa kakhulu i-crosstalk phakathi kweepikseli zemibala eyahlukeneyo, kwaye olu yilo lutsha lunokwenza i-photodiodes esebenza ngokuphezulu ibe yeyona nto iphambili kwiimodyuli zokucinga kunye ne-photosensor kwiinkqubo ezahlukeneyo.
Izinto ezisebenzayo ngakumbi ze-organic photodetectors
Uninzi lwezinto eziphilayo azifanelekanga ukuveliswa kobuninzi ngenxa yobuntununtunu kubushushu. Abanakumelana namaqondo obushushu aphezulu asetyenziselwa unyango emva konyango okanye bangazinzi xa besetyenziswa kumaqondo obushushu aphakathi ixesha elide. Ukoyisa lo mceli mngeni, izazinzulu zigxile ekulungiseni umaleko we-buffer we-photodetector ukuphucula uzinzo, ukusebenza kakuhle kunye nobhaqo. Ukufunyanwa ngumlinganiselo wendlela inzwa ekwazi ngayo ukubona iimpawu ezibuthathaka. "Sazise umgca wobhedu wokuhlambela (BCP) : I-C60 hybrid buffer layer njengomaleko wothutho lwe-electron, onika i-organic photodetector iimpawu ezikhethekileyo, kubandakanywa nokusebenza okuphezulu kunye nobumnyama obuphantsi kakhulu, obunciphisa ingxolo," kusho i-Sungjun Park. Ifotodetector inokubekwa kwi-silicon photodiode enezihluzi ezibomvu neziluhlaza okwesibhakabhaka ukwenza inzwa yomfanekiso we-hybrid.
Abaphandi babonisa ukuba i-photodetector entsha ibonisa amazinga okubona anokuthelekiswa nalawo e-silicon photodiode eqhelekileyo. Isixhobo sisebenza ngokuzinzileyo iiyure ezi-2 kumaqondo obushushu angaphezu kwe-150 °C kwaye sabonisa uzinzo lokusebenza kwexesha elide kangangeentsuku ezingama-30 kuma-85 °C. Ezi photodetectors zikwabonisa ukusebenza kakuhle kombala.
Emva koko, baceba ukwenza ngokwezifiso ii-photodetectors ezintsha kunye ne-hybrid image sensors kwizicelo ezahlukeneyo, ezifana neselfowuni kunye nezinzwa ezinxitywayo (kubandakanya i-CMOS image sensors), i-sensor sensors, kunye nezixhobo zeminwe kwimiboniso.
Ixesha lokuposa: Jul-07-2023