Chowunikira zithunzi chatsopano chokhala ndi mphamvu zambiri

Chatsopanochowunikira zithunzi chomwe chimagwira ntchito bwino kwambiri

Posachedwapa, gulu lofufuza ku Chinese Academy of Sciences (CAS) lozikidwa pa Gallium oxide Materials (PGR-GaOX) yokhala ndi polycrystalline gallium-rich gallium, linapereka koyamba njira yatsopano yopangira zinthu zodziwika bwino komanso liwiro lalikulu loyankha.chowunikira zithunzikudzera mu zotsatira zogwirizana za pyroelectric ndi photoconductivity, ndipo kafukufuku wofunikira adasindikizidwa mu Advanced Materials.zowunikira zamagetsi(kwa ma ultraviolet akuya (DUV) mpaka ma X-ray band) ndi ofunikira kwambiri m'magawo osiyanasiyana, kuphatikizapo chitetezo cha dziko, zamankhwala, ndi sayansi yamafakitale.

Komabe, zipangizo za semiconductor zomwe zilipo pano monga Si ndi α-Se zili ndi mavuto a leak current yayikulu komanso low X-ray absorption coefficient, zomwe zimakhala zovuta kukwaniritsa zosowa za high-performance detection. Mosiyana ndi zimenezi, zipangizo za semiconductor gallium oxide za wide-band gap (WBG) zimasonyeza kuthekera kwakukulu kozindikira photoelectric yamphamvu kwambiri. Komabe, chifukwa cha msampha wozama womwe sungathe kupewedwa kumbali ya zinthu komanso kusowa kwa kapangidwe kogwira mtima pa kapangidwe ka chipangizocho, n'kovuta kupeza high sensitivity ndi high response speed high energy detectors kutengera wide-band gap semiconductors. Pofuna kuthana ndi mavutowa, gulu lofufuza ku China lapanga pyroelectric photoconductive diode (PPD) kutengera PGR-GaOX koyamba. Mwa kuphatikiza interface pyroelectric effect ndi photoconductivity effect, magwiridwe antchito ozindikira amakula kwambiri. PPD yawonetsa high sensitivity ku DUV ndi X-rays, ndi ma response rates mpaka 104A/W ndi 105μC×Gyair-1/cm2, motsatana, kuposa nthawi 100 kuposa ma detector akale opangidwa ndi zinthu zofanana. Kuphatikiza apo, mphamvu ya pyroelectric yolumikizirana yomwe imayambitsidwa ndi kusinthasintha kwa polar kwa dera lochepa la PGR-GaOX imatha kuwonjezera liwiro la yankho la chowunikira ndi nthawi 105 mpaka 0.1ms. Poyerekeza ndi ma photodiode wamba, PPDS yodzipangira yokha imapanga phindu lalikulu chifukwa cha minda ya pyroelectric panthawi yosintha kuwala.

Kuphatikiza apo, PPD imatha kugwira ntchito mu bias mode, komwe gain imadalira kwambiri bias voltage, ndipo ultra-high gain ingapezeke powonjezera bias voltage. PPD ili ndi kuthekera kwakukulu kogwiritsa ntchito mphamvu zochepa komanso makina owonjezera zithunzi omwe ali ndi chidwi chachikulu. Ntchitoyi sikuti imangotsimikizira kuti GaOX ndi yodalirika.chowunikira zithunzi champhamvu kwambirizinthu, komanso imapereka njira yatsopano yopezera zida zowunikira zithunzi zamphamvu kwambiri.