Ⅰ. Chii chinonzi graphite susceptor?

A graphite susceptor chinhu chakakosha chinoshandiswa mukupisa-tembiricha maindasitiri maitiro, akagadzirirwa kutora simba remagetsi emagetsi (semuenzaniso, radio frequency kana microwave radiation) nekuishandura kuita kupisa. Inoshanda sechinhu chekudziya kana kupisa conductor, ichigadzira inodzorwa, yakafanana tembiricha nharaunda yezvinhu zvakagadziriswa.

Key Features:

Material: Yakagadzirwa nepamusoro-kuchena graphite kana graphite yakavharwa nezvinhu zvinoramba (semuenzaniso, SiC, TaC).

Basa: Inonyatso shandura simba kuita kupisa uku ichiramba kupisa kwekupisa uye kemikari corrosion.

Dhizaini: Anowanzo kuumbwa semahwendefa, madhisiki, kana tsika geometries kusangana nezvinodiwa zvemidziyo.

Ⅱ. Chii chinonzi graphite susceptors chinoshandiswa?

Semixlab graphite susceptors yakakosha mune yepamusoro semiconductor uye kugadzira zvinhu. Heano maitiro avo makuru:

1. Epitaxial Kukura (EPI)

Silicon Epitaxy:

Graphite susceptors anonyanya kushandiswa mumakemikari vapor deposition (CVD) reactors kukura imwe-crystalline silicon layer pasilicon wafers. Iyo susceptor inovimbisa kupisa kwakafanana, ichigonesa kudzora chaiko kwekukora uye doping.

Gallium Nitride (GaN) Epitaxy:

Yakakosha pakugadzirwa kweGaN-based devices (semuenzaniso, maLED, magetsi emagetsi). Graphite susceptors inoshingirira tembiricha yepamusoro (>1,000°C) inodiwa kuti GaN ikure muMOCVD (Metal Organic Chemical Vapor Deposition) masisitimu.

2. MOCVD (Metal Organic CVD)

MuGaN, GaAs, kana InP dhizaini yekugadzira, ma graphite susceptors anopa kudziyisa kwakagadzikana kwekuora simbi organic precursors uye kuisa mafirimu matete pane substrates.

3. Rapid Thermal Processing (RTP)

Inoshandiswa kune annealing, oxidation, kana dopant activation matanho. Iko kukurumidza kupisa / kutonhora kugona kweiyo susceptor kuderedza bhajeti rekupisa, iro rakakosha kune yepamusoro CMOS uye ndangariro mudziyo kugadzira.

4. Zvimwe Zvikumbiro

SiC Crystal Kukura: Yakakwirira kuchena graphite susceptors anoshandiswa mu sublimation mavira eSiC ingot kukura.

Diamond Synthesis: Inopa yakakwira tembiricha nharaunda inodiwa CVD kugadzirwa kwemadhaimani.

III. Kuita Kusiyana pakati peGraphite Susceptor Types

Graphite susceptors inogadziridzwa nemachira anovandudza mashandiro avo munzvimbo dzakatarwa. Heino kuenzanisa:

Scenarios Zvekushandisa

High-purity graphite:

Yekushandisa mumagasi anert (semuenzaniso, Si epitaxy, diamond synthesis).

Yakaderera-inodhura sarudzo yemaitiro asina corrosive magasi.

SiC-yakavharwa graphite:

YeMOCVD yeGaAs kana LED kugadzirwa (inopikisa plasma etching uye HCl byproducts).

RTP munzvimbo dzine oxygen.

TaC-yakavharwa graphite:

GaN MOCVD: inopikisa Cl₂-based precursors uye tembiricha yakakwira.

SiC epitaxy: inopesana neSi vapor corrosion panguva yekukura kwe sublimation.

Ⅳ. Sei kuvhara pamusoro kwakakosha?

SiC coating: inowedzera chinodzivirira kubva kuoxidation uye kurwiswa kwemakemikari, kuwedzera hupenyu hwe susceptor munzvimbo dzinoshanda gasi.

TaC coating: inopa kugadzikana kwakanyanya munzvimbo dzakapfuma halogen (yakajairwa kuGaN neSiC maitiro), kudzivirira graphite corrosion uye kusvibiswa.