Newhigh senitivity photodetector
Munguva pfupi yapfuura, timu yekutsvagisa kuChinese Academy yeScience (CAS) yakavakirwa papolycrystalline gallium-rich Gallium oxide Materials (PGR-GaOX) yakakurudzira kekutanga dhizaini nyowani yekunzwa kwakanyanya uye yakakwirira yekupindura kumhanya yakakwira.photodetectorkuburikidza neyakasanganiswa interface pyroelectric uye photoconductivity mhedzisiro, uye tsvakiridzo yakakodzera yakabudiswa mukati Advanced Materials. High-simbaphotoelectric detectors(yezvakadzika ultraviolet (DUV) kune X-ray mabhendi) akakosha mune dzakasiyana siyana, kusanganisira kuchengetedzwa kwenyika, mushonga, uye maindasitiri sainzi.
Zvisinei, ikozvino semiconductor zvinhu zvakadai seSi uye α-Se zvine matambudziko ekudonha kukuru kwemazuva ano uye kuderera kwe-X-ray absorption coefficient, izvo zvakaoma kuzadzisa zvinodiwa zvekuonekwa kwepamusoro-soro. Kusiyana neizvi, wide-band gap (WBG) semiconductor gallium oxide zvinhu zvinoratidza kugona kukuru kwepamusoro-simba rekuona photoelectric. Nekudaro, nekuda kweiyo isingadzivisike yakadzika nhanho musungo padivi rezvinhu uye kushomeka kwedhizaini inobudirira pane chimiro chemudziyo, zvinonetsa kuona kunzwisiswa kwepamusoro uye kumhanyisa kwekupindura kwakakwira simba photon detectors zvichibva pahupamhi-bhendi gap semiconductors. Kugadzirisa matambudziko aya, boka rekutsvagisa muChina rakagadzira pyroelectric photoconductive diode (PPD) yakavakirwa paPGR-GaOX kekutanga. Nekubatanidza iyo interface pyroelectric athari neiyo photoconductivity athari, iyo yekuona maitiro inovandudzwa zvakanyanya. PPD yakaratidza kunzwisiswa kwepamusoro kune ese ari maviri DUV uye X-rays, ine mhinduro mazinga anosvika 104A/W uye 105μC×Gyair-1/cm2, zvichiteerana, kupfuura 100 nguva dzakakwirira kupfuura dzakapfuura detectors dzakagadzirwa nezvinhu zvakafanana. Mukuwedzera, iyo interface pyroelectric effect inokonzerwa nepolar symmetry yePGR-GaOX yekuderedza nzvimbo inogona kuwedzera kukurumidza kwekupindura kwe detector ne 105 nguva kusvika 0.1ms. Kuenzaniswa neyakajairwa mafotodiodes, self-powered mode PPDS inoburitsa mibairo yepamusoro nekuda kweminda yepyroelectric panguva yekuchinja kwechiedza.
Uye zvakare, PPD inogona kushanda mu bias mode, uko kuwana kunonyanya kutsamira pane bias voltage, uye yekupedzisira-yakakwirira kuwana inogona kuwanikwa nekuwedzera bias voltage. PPD ine mukana mukuru wekushandisa mune yakaderera simba rekushandisa uye yakakwirira senitivity imaging ekusimudzira masisitimu. Iri basa haringoratidzi kuti GaOX inovimbisahigh simba photodetectorzvinhu, asi zvakare inopa zano idzva rekuona yakakwirira kuita yakakwira simba photodetectors.
Nguva yekutumira: Sep-10-2024