Entshaifotodetector enovakalelo oluphezulu
Kutshanje, iqela lophando kwi-Chinese Academy of Sciences (CAS) esekelwe kwi-polycrystalline gallium-rich Gallium oxide Materials (PGR-GaOX) ecetywayo okokuqala ngqa isicwangciso esitsha soyilo lokuqonda okuphezulu kunye nesantya esiphezulu sokuphendula.ifotodetectorngokusebenzisa i-interface edibeneyo ye-pyroelectric kunye ne-photoconductivity effects, kunye nophando olufanelekileyo lwapapashwa kwi-Advanced Materials. Amandla aphezuluiidetectors photoelectric(kwi-ultraviolet enzulu (i-DUV) ukuya kwii-X-ray bands) zibaluleke kakhulu kwiinkalo ezahlukeneyo, kubandakanywa ukhuseleko lwesizwe, amayeza, kunye nesayensi yezoshishino.
Nangona kunjalo, izixhobo zangoku ze-semiconductor ezifana ne-Si kunye ne-α-Se zineengxaki zokuvuza okukhulu ngoku kunye ne-coefficient ephantsi ye-X-ray yokufunxa, okunzima ukuhlangabezana neemfuno zokubona ukusebenza okuphezulu. Ngokwahlukileyo, i-wide-band gap (WBG) semiconductor gallium oxide imathiriyeli ibonisa amandla amakhulu okubona umbane we-photoelectric. Nangona kunjalo, ngenxa yenqanaba lobunzulu obungenakuthintelwa kwicala lezinto kunye nokungabikho koyilo olusebenzayo kwisakhiwo sesixhobo, kulucelomngeni ukuqonda ubuntununtunu obuphezulu kunye nesantya sokuphendula esiphezulu se-photon detectors yamandla esekelwe kwi-wide-band gap semiconductors. Ukujongana nale mingeni, iqela lophando e-China lenze i-pyroelectric photoconductive diode (PPD) esekelwe kwi-PGR-GaOX okokuqala. Ngokudibanisa i-interface ye-pyroelectric effect kunye ne-photoconductivity effect, ukusebenza kokufumanisa kuphuculwe kakhulu. I-PPD ibonise uvakalelo oluphezulu kwi-DUV kunye ne-X-rays, kunye namazinga okuphendula ukuya kwi-104A / W kunye ne-105μC × Gyair-1 / cm2, ngokulandelanayo, ngaphezu kwamaxesha e-100 aphezulu kunee-detectors zangaphambili ezenziwe ngezinto ezifanayo. Ukongezelela, i-interface ye-pyroelectric effect ebangelwa i-polar symmetry ye-PGR-GaOX yokunciphisa ingingqi inokunyusa isantya sokuphendula se-detector ngamaxesha e-105 ukuya kwi-0.1ms. Xa kuthelekiswa neefotodiodes eziqhelekileyo, i-self-powered mode PPDS ivelisa inzuzo ephezulu ngenxa yeendawo zepyroelectric ngexesha lokutshintsha ukukhanya.
Ukongeza, i-PPD inokusebenza kwimodi ye-bias, apho inzuzo ixhomekeke kakhulu kwi-voltage ye-bias, kunye ne-ultra-high gain inokufumaneka ngokunyusa i-voltage ye-bias. I-PPD inamandla osetyenziso olukhulu ekusebenziseni amandla aphantsi kunye neenkqubo zokuphucula uvakalelo oluphezulu. Lo msebenzi awubonisi nje kuphela ukuba i-GaOX iyathembisaifotodetector yamandla aphezuluimpahla, kodwa ikwabonelela ngesicwangciso esitsha sokuqonda ukusebenza okuphezulu kweefoto zamandla aphezulu.
Ixesha lokuposa: Sep-10-2024