Lub tshuab thaij duab tshiab uas muaj kev rhiab heev

Tshiablub photodetector rhiab heev

Tsis ntev los no, pab pawg tshawb fawb ntawm Suav Academy of Sciences (CAS) raws li polycrystalline gallium-rich Gallium oxide Materials (PGR-GaOX) tau thov thawj zaug rau txoj kev tsim qauv tshiab rau kev rhiab heev thiab kev teb ceev ceev.lub tshuab ntes duablos ntawm kev sib txuas ua ke ntawm pyroelectric thiab photoconductivity, thiab cov kev tshawb fawb tseem ceeb tau luam tawm hauv Advanced Materials. High-energycov khoom siv photoelectric(rau cov kab ultraviolet tob (DUV) mus rau X-ray bands) yog qhov tseem ceeb hauv ntau qhov chaw, suav nrog kev ruaj ntseg hauv tebchaws, tshuaj, thiab kev tshawb fawb txog kev lag luam.

Txawm li cas los xij, cov ntaub ntawv semiconductor tam sim no xws li Si thiab α-Se muaj teeb meem ntawm qhov xau loj thiab cov coefficient nqus X-ray qis, uas nyuaj rau ua kom tau raws li qhov xav tau ntawm kev ua haujlwm siab. Qhov sib piv, cov ntaub ntawv semiconductor gallium oxide dav-band gap (WBG) qhia txog lub peev xwm zoo rau kev tshawb pom photoelectric zog siab. Txawm li cas los xij, vim yog qhov tsis zam qhov tob tob ntawm sab khoom siv thiab tsis muaj kev tsim qauv zoo ntawm cov qauv ntaus ntawv, nws yog qhov nyuaj kom paub txog kev rhiab heev thiab kev teb ceev ceev siab zog photon detectors raws li wide-band gap semiconductors. Txhawm rau daws cov teeb meem no, pab pawg tshawb fawb hauv Suav teb tau tsim pyroelectric photoconductive diode (PPD) raws li PGR-GaOX thawj zaug. Los ntawm kev sib txuas cov nyhuv pyroelectric interface nrog cov nyhuv photoconductivity, kev ua haujlwm ntawm kev tshawb pom tau zoo dua. PPD qhia txog kev rhiab heev rau ob qho tib si DUV thiab X-rays, nrog cov nqi teb txog li 104A / W thiab 105μC × Gyair-1 / cm2, feem, ntau dua 100 npaug ntau dua li cov detectors yav dhau los ua los ntawm cov ntaub ntawv zoo sib xws. Ntxiv mus, qhov cuam tshuam pyroelectric tshwm sim los ntawm qhov sib npaug ntawm thaj tsam PGR-GaOX depletion tuaj yeem ua rau qhov ceev teb ntawm lub tshuab ntes tau nce 105 zaug mus rau 0.1ms. Piv rau cov duab photodiodes ib txwm muaj, hom PPDS uas siv hluav taws xob tus kheej tsim cov txiaj ntsig ntau dua vim yog cov teb pyroelectric thaum lub sijhawm hloov lub teeb.

Ntxiv mus, PPD tuaj yeem ua haujlwm hauv hom bias, qhov twg qhov nce siab nyob ntawm qhov hluav taws xob bias, thiab qhov nce siab heev tuaj yeem ua tiav los ntawm kev nce qhov hluav taws xob bias. PPD muaj peev xwm siv tau zoo hauv kev siv hluav taws xob tsawg thiab cov txheej txheem txhim kho duab siab. Txoj haujlwm no tsis yog tsuas yog ua pov thawj tias GaOX yog qhov muaj kev cia siablub zog siab photodetectorcov khoom siv, tab sis kuj muab ib txoj hauv kev tshiab rau kev ua tiav cov photodetectors muaj zog siab.