Tshiab siab rhiab heev photodetector

Tshiab siab rhiab heev photodetector

Tsis ntev los no, ib pab neeg tshawb fawb ntawm Tuam Tshoj Academy of Sciences (CAS) raws li polycrystalline gallium-nplua nuj Gallium oxide Cov ntaub ntawv (PGR-GaOX) tau thov thawj zaug tus qauv tsim tshiab rau siab rhiab heev thiab cov lus teb ceev siab photodetector los ntawm kev sib txuas sib txuas pyroelectric thiab cov teebmeem photoconductivity, thiab cov kev tshawb fawb cuam tshuam tau luam tawm hauv Advanced Materials. Cov khoom siv hluav taws xob hluav taws xob siab (rau qhov sib sib zog nqus ultraviolet (DUV) rau X-ray bands) yog qhov tseem ceeb hauv ntau qhov chaw, suav nrog kev ruaj ntseg hauv teb chaws, tshuaj, thiab kev lag luam kev lag luam.

Txawm li cas los xij, cov khoom siv semiconductor tam sim no xws li Si thiab α-Se muaj teeb meem ntawm cov xau loj tam sim no thiab qis X-ray absorption coefficient, uas nyuaj rau kev ua kom tau raws li qhov xav tau ntawm kev ua haujlwm siab. Nyob rau hauv sib piv, dav-band gap (WBG) semiconductor gallium oxide cov ntaub ntawv qhia tau zoo muaj peev xwm rau high-zog photoelectric nrhiav tau. Txawm li cas los xij, vim yog qhov tsis pom kev sib sib zog nqus ntawm cov khoom siv sab nraud thiab tsis muaj kev tsim qauv zoo ntawm cov cuab yeej siv, nws yog ib qho nyuaj kom paub txog qhov kev xav tau siab thiab cov lus teb siab ceev siab zog photon detectors raws li dav-band gap semiconductors. Txhawm rau daws cov teeb meem no, pab pawg tshawb fawb hauv Suav teb tau tsim lub pyroelectric photoconductive diode (PPD) raws li PGR-GaOX thawj zaug. Los ntawm kev sib txuas ntawm qhov cuam tshuam pyroelectric cuam tshuam nrog cov nyhuv photoconductivity, qhov kev tshawb pom kev ua haujlwm tau zoo tuaj. PPD tau pom tias muaj kev nkag siab zoo rau ob qho tib si DUV thiab X-rays, nrog cov lus teb txog li 104A / W thiab 105μC × Gyair-1 / cm2, raws li, ntau dua 100 npaug ntau dua li yav dhau los cov khoom siv los ntawm cov khoom zoo sib xws. Tsis tas li ntawd, qhov cuam tshuam pyroelectric cuam tshuam los ntawm cov polar symmetry ntawm PGR-GaOX depletion cheeb tsam tuaj yeem ua rau cov lus teb ceev ntawm lub ntes los ntawm 105 npaug rau 0.1ms. Piv nrog rau cov qauv photodiodes, tus kheej-powered hom PPDS tsim tau ntau dua vim cov pyroelectric teb thaum lub teeb hloov.

Tsis tas li ntawd, PPD tuaj yeem ua haujlwm hauv hom kev tsis ncaj ncees, qhov twg qhov kev nce siab yog nyob ntawm qhov tsis txaus ntseeg, thiab qhov kev nce siab ntawm ultra-siab tuaj yeem ua tiav los ntawm kev nce qhov tsis sib xws. PPD muaj peev xwm siv tau zoo hauv kev siv hluav taws xob tsawg thiab kev ua kom pom kev ua kom pom kev zoo. Qhov kev ua haujlwm no tsis tsuas yog ua pov thawj tias GaOX yog cov khoom cog lus siab zog photodetector cov khoom, tab sis kuj muab lub tswv yim tshiab rau kev paub txog kev ua haujlwm siab zog photodetectors.