Imashini nshya ipima foto ifite ubushobozi bwo kugaragaza ubukana bwinshi

Gishyaicyuma gipima foto gifite ubushobozi bwo kugaragaza ubukana bwinshi

Vuba aha, itsinda ry’abashakashatsi bo mu Ishuri Rikuru ry’Ubumenyi ry’Abashinwa (CAS) rishingiye ku bikoresho bya Gallium oxide (PGR-GaOX) bikungahaye kuri polycrystalline gallium, ryatanze igitekerezo ku nshuro ya mbere cy’ingamba nshya zo gushushanya uburyo bwo kumva neza no gusubiza vuba cyane.icyuma gipima fotobinyuze mu ngaruka za pyroelectric na photoconductivity, kandi ubushakashatsi bujyanye nabyo bwasohotse muri Advanced Materials.ibikoresho bipima amashanyarazi(ku mirasire ya ultraviolet yimbitse (DUV) kugeza kuri X-ray) ni ingenzi mu nzego zitandukanye, harimo umutekano w'igihugu, ubuvuzi, n'ubumenyi bw'inganda.

Ariko, ibikoresho bya semiconductor ubu nka Si na α-Se bifite ibibazo by’umuyoboro munini w’amazi asohoka n’umuyoboro muto wa X-ray, ibyo bikaba bigoye guhaza ibyifuzo byo kumenya neza imikorere. Mu buryo bunyuranye, ibikoresho bya semiconductor gallium oxide bya wide-band gap (WBG) bigaragaza ubushobozi bukomeye bwo kumenya amashanyarazi afite ingufu nyinshi. Ariko, bitewe n’umutego udashobora kwibagirana ku ruhande rw’ibikoresho ndetse no kutagira imiterere myiza ku miterere y’igikoresho, biragoye kubona ibikoresho bipima fotoni bifite ingufu nyinshi kandi byihuta cyane bishingiye ku bikoresho bipima amashanyarazi bifite ingufu nyinshi. Kugira ngo bikemure ibi bibazo, itsinda ry’ubushakashatsi mu Bushinwa ryakoze diode ipima fotoni (PPD) ishingiye kuri PGR-GaOX ku nshuro ya mbere. Binyuze mu guhuza ingaruka za pyroelectric interface n’ingaruka za fotoconductivity, imikorere yo kumenya irarushaho kuba myiza cyane. PPD yagaragaje ubushobozi bwinshi kuri DUV na X-rays, aho igipimo cyo gusubiza kigera kuri 104A/W na 105μC × Gyair-1/cm2, uko bikurikirana, inshuro zirenga 100 kurusha ibikoresho byabanje bipima bikozwe mu bikoresho bisa. Byongeye kandi, ingaruka za pyroelectric ziterwa n'ubusumbane bwa polar bw'agace ka PGR-GaOX gacukurwaho zishobora kongera umuvuduko w'igipimo cy'ingufu ku nshuro 105 kugeza kuri 0.1ms. Ugereranyije na photodiode zisanzwe, PPDS yikoresha ubwayo itanga inyungu nyinshi bitewe n'imirima ya pyroelectric mu gihe cyo guhindura urumuri.

Byongeye kandi, PPD ishobora gukora mu buryo bwa bias, aho inyungu ishingiye cyane ku muvuduko wa bias, kandi inyungu nyinshi cyane ishobora kugerwaho binyuze mu kongera voltage ya bias. PPD ifite ubushobozi bwinshi bwo kuyikoresha mu gukoresha ingufu nke no mu buryo bwo kongera ubushobozi bwo gufata amashusho. Uyu murimo ntugaragaza gusa ko GaOX ari ingirakamaro.icyuma gipima foto gifite ingufu nyinshiibikoresho, ariko kandi itanga ingamba nshya zo gukoresha ibyuma bipima ikirere bifite ingufu nyinshi.