Silicon carbide semiconductor zvinhu

Silicon carbide (SiC)semiconductor zvinhu ndiyo yakanyanya kukura pakati pehupamhi bhendi gap semiconductors yakagadzirwa. SiC semiconductor zvinhu zvine hukuru hwekushandisa mutembiricha yakakwira, yakakwirira frequency, yakakwirira simba, mafotoelectronics uye nemwaranzi inodzivirira michina nekuda kwehupamhi hwebhendi gap, yakakwira breakdown yemagetsi munda, yakakwirira yekupisa conductivity, yakakwira saturation electron mobility uye diki saizi. Silicon carbide ine zvakasiyana-siyana zvekushandisa: nekuda kwehupamhi hwebhendi gap, inogona kushandiswa kugadzira blue light-emitting diodes kana ultraviolet detectors iyo isinganyanyi kukanganiswa nechiedza chezuva; Nokuti magetsi emagetsi kana magetsi anogona kushivirira kasere kupfuura silicon kana gallium arsenide, kunyanya akakodzera pakugadzira-high-voltage high-power madivayiri akadai se-high-voltage diode, simba retatu, silicon inodzorwa uye yakakwirira-simba microwave zvishandiso; Nekuda kweiyo yakakwira saturation electron migration speed, inogona kuitwa kuva yakasiyana-siyana yepamusoro-frequency madivayiri (RF uye microwave);Silicon carbideyakanaka conductor yekupisa uye inoitisa kupisa zvirinani kupfuura chero imwe semiconductor zvinhu, izvo zvinoita kuti silicon carbide zvishandiso zvishande pakudziya kwakanyanya.

Semuyenzaniso chaiwo, APEI parizvino iri kugadzirira kugadzira yakanyanyisa nharaunda DC mota drive system yeNASA's Venus Explorer (VISE) ichishandisa silicon carbide zvikamu. Ndichiri muchikamu chekugadzira, chinangwa ndechekudzika marobhoti ekuongorora pamusoro peVenus.

Mukuwedzera, silicon carbideine yakasimba ionic covalent bond, ine kuoma kwepamusoro, kupisa kwekushisa pamusoro pemhangura, kushanda kwakanaka kwekupisa kupisa, corrosion resistance yakasimba zvikuru, kurwisana nemwaranzi, kupisa kwekushisa kwepamusoro uye kugadzikana kwakanaka kwemakemikari nezvimwe zvinhu, ine zvakasiyana-siyana zvekushandisa mu munda we aerospace tekinoroji. Semuenzaniso, kushandiswa kwesilicon carbide zvinhu kugadzirira spacecraft kune vanoongorora nyeredzi, vaongorori kuti vararame uye vashande.