Abaphandi baphuhlise kwaye babonise ukukhanya okutsha okuluhlaza okufunxa ii-photodetectors zendalo ezicacileyo ezinobuthathaka kakhulu kwaye zihambelana neendlela zokwenza i-CMOS. Ukufaka ezi photodetectors zintsha kwii-silicone hybrid image sensors kunokuba luncedo kwiizicelo ezininzi. Ezi zicelo ziquka ukujonga izinga lentliziyo elisekelwe ekukhanyeni, ukuqondwa kweminwe kunye nezixhobo ezibona ubukho bezinto ezikufutshane.
Nokuba zisetyenziswa kwiifowuni eziphathwayo okanye kwiikhamera zesayensi, uninzi lwezixhobo zokufota imifanekiso namhlanje zisekelwe kubuchwepheshe be-CMOS kunye nezixhobo zokufota ezingaphiliyo eziguqula imiqondiso yokukhanya ibe ziimpawu zombane. Nangona izixhobo zokufota ezenziwe ngezinto eziphilayo zitsala ingqalelo kuba zinokunceda ukuphucula uvakalelo, ukuza kuthi ga ngoku kuye kwabonakala kunzima ukwenza izixhobo zokufota ezisebenza kakuhle.
Umphandi okhokelayo uSungjun Park, wase-Ajou University eMzantsi Korea, uthe: “Ukufaka ii-photodetectors ze-organic kwi-CMOS image sensors eziveliswa ngobuninzi kufuna ii-organic light absorbers ezilula ukuzenza ngomlinganiselo omkhulu kwaye zikwazi ukuqaphela imifanekiso ecacileyo ukuze zivelise imifanekiso ebukhali ngamanani aphezulu efreyimu ebumnyameni. Siphuhlise ii-photodiodes ze-organic ezibonakalayo nezinovakalelo oluluhlaza ezinokuhlangabezana nezi mfuno.”
Abaphandi bachaza i-photodetector entsha ye-organic kwijenali i-Optica. Bakwadale i-hybrid RGB imaging sensor ngokufaka i-photodetector ye-organic ecacileyo efunxayo eluhlaza kwi-silicon photodiode enezihluzo ezibomvu neziluhlaza okwesibhakabhaka.
I-Kyung-Bae Park, inkokheli yeqela lophando elivela kwi-Samsung Advanced Institute of Technology (SAIT) eMzantsi Korea, uthe: “Ngenxa yokwaziswa kwe-hybrid organic buffer layer, i-green-selective organic layer efunxa ukukhanya esetyenziswa kwezi sensors zemifanekiso inciphisa kakhulu incoko phakathi kwee-pixels zemibala eyahlukeneyo, kwaye olu yilo lutsha lunokwenza ii-photodiodes ze-organic ezisebenza kakuhle zibe yinxalenye ephambili yeemodyuli zemifanekiso kunye nee-photosensors zezicelo ezahlukeneyo.”
Izixhobo zokubona iifoto zendalo ezisebenzayo ngakumbi
Uninzi lwezinto eziphilayo azifanelekanga ukuvelisa izinto ezininzi ngenxa yokuba zinobuthathaka kubushushu. Azinakumelana nobushushu obuphezulu obusetyenziswa emva konyango okanye zingazinzi xa zisetyenziswa kubushushu obuphakathi ixesha elide. Ukuze zoyise olu celomngeni, izazinzulu zigxile ekuguquleni umaleko we-buffer we-photodetector ukuphucula uzinzo, ukusebenza kakuhle, kunye nokubhaqwa. Ukubhaqwa sisilinganiso sokuba i-sensor ingazibhaqa njani iimpawu ezibuthathaka. “Siqalise umgca we-bath copper (BCP): C60 hybrid buffer layer njengomaleko wokuthutha we-electron, onika i-organic photodetector iipropati ezikhethekileyo, kubandakanya ukusebenza kakuhle okuphezulu kunye nomsinga omnyama ophantsi kakhulu, onciphisa ingxolo,” utshilo uSungjun Park. I-photodetector ingafakwa kwi-silicon photodiode enezihluzi ezibomvu neziluhlaza okwesibhakabhaka ukwenza i-hybrid image sensor.
Abaphandi babonisa ukuba i-photodetector entsha ibonisa amazinga okubonwa afana nalawo ee-silicon photodiodes eziqhelekileyo. I-detector isebenze ngokuzinzileyo iiyure ezi-2 kumaqondo obushushu angaphezu kwe-150 °C kwaye ibonise uzinzo lokusebenza ixesha elide kangangeentsuku ezingama-30 kwi-85 °C. Ezi photodetectors zikwabonisa ukusebenza kakuhle kombala.
Okulandelayo, baceba ukwenza ngokwezifiso ii-photodetectors ezintsha kunye nee-hybrid image sensors kwiintlobo ngeentlobo zezicelo, ezifana nee-mobile sensors kunye nee-wearable sensors (kuquka ii-CMOS image sensors), ii-proximity sensors, kunye nezixhobo zeminwe eziboniswayo.
Ixesha lokuthumela: Julayi-07-2023