Abacwaningi bathuthukise futhi babonise ukukhanya okusha okuluhlaza okumunca ama-photodetector abonakalayo emvelo azwela kakhulu futhi ahambisana nezindlela zokukhiqiza ze-CMOS. Ukufaka la ma-photodetector amasha kuma-sensor e-silicone hybrid image kungaba usizo ezinhlelweni eziningi. Lezi zinhlelo zokusebenza zifaka phakathi ukuqapha izinga lokushaya kwenhliziyo okusekelwe ekukhanyeni, ukuqashelwa kweminwe kanye namadivayisi athola ukuba khona kwezinto eziseduze.
Kungakhathaliseki ukuthi zisetshenziswa kuma-smartphone noma kumakhamera esayensi, izinzwa eziningi zokuthwebula izithombe namuhla zisekelwe kubuchwepheshe be-CMOS kanye nama-photodetector angaphili aguqula izimpawu zokukhanya zibe izimpawu zikagesi. Nakuba ama-photodetector enziwe ngezinto eziphilayo edonsela ukunaka ngoba angasiza ekuthuthukiseni ukuzwela, kuze kube manje kuye kwaba nzima ukukhiqiza ama-photodetector angaphili asebenza kahle kakhulu.
Umcwaningi oholayo uSungjun Park, wase-Ajou University eNingizimu Korea, uthe: “Ukufaka ama-photodetector ezinto eziphilayo kuma-sensor ezithombe ze-CMOS akhiqizwa ngobuningi kudinga ama-absorber okukhanya ezinto eziphilayo okulula ukuwakhiqiza ngezinga elikhulu futhi akwazi ukubona izithombe ezicacile ukuze akhiqize izithombe ezibukhali ngamafreyimu aphezulu ebumnyameni. Sithuthukise ama-photodiode ezinto eziphilayo acacile, azwela okuluhlaza angahlangabezana nalezi zidingo.”
Abacwaningi bachaza i-photodetector entsha ye-organic kumagazini i-Optica. Baphinde bakha inzwa yokuthwebula izithombe ye-hybrid RGB ngokufaka i-photodetector ye-organic ekhanyayo emunca okuluhlaza okotshani ku-silicon photodiode enezihlungi ezibomvu neziluhlaza okwesibhakabhaka.
UKyung-Bae Park, umholi wethimba locwaningo elivela kwi-Samsung Advanced Institute of Technology (SAIT) eNingizimu Korea, uthe: “Ngenxa yokwethulwa kwesendlalelo se-buffer esihlanganisiwe se-organic, isendlalelo se-organic esikhetha ukukhanya esiluhlaza esisetshenziswa kulezi zinzwa zezithombe sinciphisa kakhulu ukuxoxisana phakathi kwamaphikseli anemibala ehlukene, futhi lo mklamo omusha ungenza ama-photodiode e-organic asebenza kahle abe yingxenye ebalulekile yamamojula okuthwebula izithombe nama-photosensor ezinhlelo zokusebenza ezahlukahlukene.”
Ama-photodetector engeziwe asebenzayo e-organic
Izinto eziningi eziphilayo azifanele ukukhiqizwa ngobuningi ngenxa yokuzwela kwazo ekushiseni. Azikwazi ukumelana namazinga okushisa aphezulu asetshenziselwa ukwelashwa ngemva kokwelashwa noma zingazinzi uma zisetshenziswa emazingeni okushisa aphakathi isikhathi eside. Ukuze banqobe le nselele, ososayensi bagxile ekushintsheni ungqimba lwe-buffer lwe-photodetector ukuze bathuthukise ukuzinza, ukusebenza kahle, kanye nokutholwa. Ukutholwa kuyisilinganiso sokuthi inzwa ingazibona kahle kangakanani izimpawu ezibuthakathaka. “Sethule umugqa wethusi webhavu (i-BCP): ungqimba lwe-buffer lwe-C60 hybrid njengengqimba yokuthutha ama-electron, enikeza i-photodetector ye-organic izakhiwo ezikhethekile, okuhlanganisa ukusebenza kahle okuphezulu kanye nogesi omnyama ophansi kakhulu, okunciphisa umsindo,” kusho uSungjun Park. I-photodetector ingafakwa ku-silicon photodiode enezihlungi ezibomvu neziluhlaza okwesibhakabhaka ukudala inzwa yesithombe esihlanganisiwe.
Abacwaningi bakhombisa ukuthi i-photodetector entsha ibonisa amazinga okuthola afana nalawo e-silicon photodiodes avamile. I-detector isebenze ngokuqina amahora ama-2 emazingeni okushisa angaphezu kuka-150 °C futhi yabonisa ukuzinza kokusebenza kwesikhathi eside izinsuku ezingama-30 ku-85 °C. La ma-photodetector nawo abonisa ukusebenza kahle kombala.
Okulandelayo, bahlela ukwenza ngezifiso ama-photodetector amasha kanye nezinzwa zesithombe ezihlanganisiwe zezinhlelo zokusebenza ezahlukahlukene, njengezinzwa zeselula nezigqokwayo (kufaka phakathi izinzwa zesithombe ze-CMOS), izinzwa zokusondela, kanye namadivayisi eminwe ezikrinini.
Isikhathi sokuthunyelwe: Julayi-07-2023