I-SILICON WAFER

I-SILICON WAFER

kusuka ku-sitronic

Aisilucwecwanaiwucezu lwe-silicon oluwugqinsi oluyimilimitha elingu-1 olunendawo eyisicaba ngokwedlulele ngenxa yezinqubo ezidingeka kakhulu ngokobuchwepheshe. Ukusetshenziswa okulandelayo kunquma ukuthi iyiphi inqubo yokukhula kwekristalu okufanele isetshenziswe. Enqubweni ye-Czochralski, isibonelo, i-silicon ye-polycrystalline iyancibilika futhi ikristalu yembewu encane yepensela ifakwe ku-silicon encibilikisiwe. Ikristalu yembewu ibe isijikeleziswa futhi kancane idonselwa phezulu. I-colossus enzima kakhulu, i-monocrystal, imiphumela. Kungenzeka ukukhetha izici zikagesi ze-monocrystal ngokungeza amayunithi amancane ama-dopants ahlanzekile kakhulu. Amakristalu afakwa ngokuhambisana nokucaciswa kwekhasimende abese epholishwa futhi asikwe abe izingcezu. Ngemuva kwezinyathelo ezahlukahlukene zokukhiqiza ezengeziwe, ikhasimende lithola ama-wafers alo acacisiwe emaphaketheni akhethekile, okuvumela ikhasimende ukuthi lisebenziseisilucwecwanangokushesha emgqeni wayo wokukhiqiza.

Namuhla, ingxenye enkulu ye-silicon monocrystals ikhulile ngokwenqubo ye-Czochralski, ehlanganisa ukuncibilika kwe-silicon ye-polycrystalline high-purity ku-crucible quartz hyperpure kanye nokwengeza i-dopant (imvamisa i-B, P, As, Sb). Ikristalu elincane, le-monocrystalline imbewu licwiliswa ku-silicon encibilikisiwe. Ikristalu enkulu ye-CZ ibe isikhula kusukela kule crystal encane. Ukulawulwa okunembayo kwezinga lokushisa le-silicon encibilikisiwe kanye nokugeleza, ukuzungezisa kwekristalu ne-crucible, kanye nesivinini sokudonsa ngekristalu kuphumela ku-silicon ingot yekhwalithi ephezulu kakhulu ye-monocrystalline.