Photodetector nshya

GishyaPhotodetector

Vuba aha, itsinda ry’ubushakashatsi mu Ishuri Rikuru ry’Ubushinwa (CAS) rishingiye kuri polycrystalline gallium ikungahaye kuri Gallium oxyde Materials (PGR-GaOX) ryatanze ku nshuro ya mbere ingamba nshya zo gushushanya uburyo bwo kumva neza no kwihuta cyanegufotorahifashishijwe interineti ihuriweho na pyroelectric na Photoconductivity ingaruka, kandi ubushakashatsi bujyanye nabwo bwasohotse mubikoresho bigezweho. Ingufu nyinshiibyuma bifata amashanyarazi(kuri ultraviolet yimbitse (DUV) kugeza kuri X-ray) ni ingenzi mubice bitandukanye, harimo umutekano wigihugu, ubuvuzi, na siyanse yinganda.

Nyamara, ibikoresho bya semiconductor biriho ubu nka Si na α-Se bifite ibibazo byumuvuduko mwinshi wamazi hamwe na coefficient ya X-ray yo hasi, bikaba bigoye guhaza ibikenewe byo gutahura neza. Ibinyuranyo, icyuho kinini (WBG) igice cya semiconductor gallium oxyde yerekana imbaraga zikomeye zo kumenya amashanyarazi afite ingufu nyinshi. Nubwo bimeze bityo ariko, kubera umutego wimbitse byanze bikunze kuruhande rwibikoresho no kutagira igishushanyo mbonera cyimiterere yibikoresho, biragoye kumenya ibyiyumvo bihanitse kandi byihuta byihuta byihuta byerekana ingufu za fotone zishingiye kumurongo mugari wa interineti. Kugira ngo ibyo bibazo bikemuke, itsinda ry’ubushakashatsi mu Bushinwa ryateguye diode ya pyroelectric Photoconductive diode (PPD) ishingiye kuri PGR-GaOX bwa mbere. Muguhuza intera ya pyroelectric hamwe ningaruka ya fotokondivite, imikorere yo gutahura iratera imbere cyane. PPD yerekanye ibyiyumvo byinshi kuri DUV na X-X, hamwe nibisubizo bigera kuri 104A / W na 105μC × Gyair-1 / cm2, bikubye inshuro zirenga 100 ugereranije nubushakashatsi bwakorewe mubikoresho bisa. Byongeye kandi, isura ya pyroelectric yimikorere iterwa na polarike ya polarike yo mukarere ka depletion ya PGR-GaOX irashobora kongera umuvuduko wibisubizo bya detector inshuro 105 kugeza 0.1m. Ugereranije na fotodi isanzwe, uburyo bwo gukoresha imbaraga PPDS itanga inyungu nyinshi kubera imirima ya pyroelectric mugihe cyo guhinduranya urumuri.

Mubyongeyeho, PPD irashobora gukora muburyo bubogamye, aho inyungu zishingiye cyane kuri bias voltage, kandi inyungu-ultra-high irashobora kugerwaho mukongera ingufu za bias. PPD ifite imbaraga nyinshi zo gukoresha mukoresha ingufu nke hamwe na sisitemu yo kongera amashusho menshi. Aka kazi ntigaragaza gusa ko GaOX itanga ikizereingufu nyinshi zifotoraibikoresho, ariko kandi itanga ingamba nshya zo kumenya imikorere ihanitse ya fotodetekeri.