Chinoongorora chiedza chitsva chemhando yepamusoro

Itsvachishandiso chekuona kuti munhu anonzwa sei zvakanyanya

Munguva pfupi yapfuura, timu yekutsvagisa paChinese Academy of Sciences (CAS) yakavakirwa paGallium oxide Materials (PGR-GaOX) ine polycrystalline gallium yakawanda, yakakurudzira kekutanga nzira itsva yekugadzira hunyanzvi hwepamusoro uye kumhanya kwakanyanya kwekupindura.mudziyo wekuona fotokuburikidza nemhedzisiro yekubatanidza interface pyroelectric uye photoconductivity, uye tsvakiridzo yakakodzera yakaburitswa muAdvanced Materials.michina yekuona mifananidzo(yemabhendi e-ultraviolet akadzika (DUV) kusvika kuX-ray) akakosha muzvikamu zvakasiyana-siyana, kusanganisira kuchengetedzwa kwenyika, mushonga, uye sainzi yeindasitiri.

Zvisinei, zvinhu zve semiconductor zviripo pari zvino zvakaita seSi ne α-Se zvine matambudziko ekubuda kwemhepo yakawanda uye kudzika kweX-ray absorption coefficient, izvo zvakaoma kusangana nezvinodiwa zve high-performance detection. Kusiyana neizvi, zvinhu zve semiconductor gallium oxide zvakafara zvinoratidza mukana mukuru wekuona photoelectric ine simba guru. Zvisinei, nekuda kwe deep level trap isingadzivisike padivi rezvinhu uye kushaya dhizaini inoshanda pachimiro chemudziyo, zvinonetsa kuwana high sensitivity uye high response speed high energy photon detectors zvichibva pa wide-band gap semiconductors. Kuti vagadzirise matambudziko aya, timu yekutsvagisa muChina yakagadzira pyroelectric photoconductive diode (PPD) yakavakirwa paPGR-GaOX kekutanga. Nekubatanidza interface pyroelectric effect ne photoconductivity effect, mashandiro ekuona anovandudzwa zvakanyanya. PPD yakaratidza high sensitivity kune ese DUV neX-rays, ne response rates inosvika 104A/W uye 105μC×Gyair-1/cm2, zvichiteerana, zvakapetwa ka100 kupfuura ma detectors ekare akagadzirwa nezvinhu zvakafanana. Pamusoro pezvo, mhedzisiro ye pyroelectric interface inokonzerwa ne polar symmetry yenzvimbo ye PGR-GaOX depletion inogona kuwedzera kumhanya kwemhinduro ye detector ne105 times kusvika 0.1ms. Zvichienzaniswa ne photodiodes dzakajairika, self-powered mode PPDS inogadzira gains yakakwira nekuda kweminda ye pyroelectric panguva yekuchinja kwechiedza.

Pamusoro pezvo, PPD inogona kushanda mu bias mode, uko gain inoenderana zvakanyanya ne bias voltage, uye ultra-high gain inogona kuwanikwa nekuwedzera bias voltage. PPD ine mukana mukuru wekushandisa mukushandiswa kwesimba shoma uye high sensitivity imaging enhancement systems. Basa iri haringoratidzi chete kuti GaOX inotarisira.chishandiso chekuona chiedza chine simba rakawandazvinhu, asi zvakare inopa nzira itsva yekuwana ma photodetectors ane simba rakawanda anoshanda zvakanyanya.