SILICON WAFER

SILICON WAFER

daga sitronic

Awaferwani yanki ne na siliki mai kauri kusan milimita 1 wanda ke da filaye mai faɗi sosai godiya ga hanyoyin da suke da matuƙar buƙata. Amfani na gaba yana ƙayyade wace hanyar girma crystal yakamata a yi amfani da ita. A cikin tsarin Czochralski, alal misali, siliki na polycrystalline yana narke kuma ana tsoma nau'in lu'ulu'u mai bakin fensir a cikin narkakkar siliki. Ana jujjuya kristal iri kuma a jawo sama a hankali. Colossus mai nauyi sosai, monocrystal, yana haifar da sakamako. Yana yiwuwa a zaɓi halayen lantarki na monocrystal ta ƙara ƙananan raka'a na dopants masu tsabta. Lu'ulu'u suna doped daidai da ƙayyadaddun abokin ciniki sannan kuma an goge su kuma a yanka su cikin yanka. Bayan ƙarin matakan samarwa daban-daban, abokin ciniki yana karɓar ƙayyadaddun wafers a cikin marufi na musamman, wanda ke ba abokin ciniki damar amfani dawafernan da nan a cikin layin samarwa.

A yau, babban ɓangare na silicon monocrystals ana girma bisa ga tsarin Czochralski, wanda ya haɗa da narke polycrystalline high-tsarki silicon a cikin wani hyperpure quartz crucible da kuma ƙara da dopant (yawanci B, P, As, Sb). An tsoma siriri, nau'in lu'ulu'u na monocrystalline a cikin narkakkar siliki. Wani babban kristal CZ yana tasowa daga wannan siraren kristal. Daidaitaccen tsari na narkar da zafin silika da kwarara, kristal da jujjuyawar da ba za a iya gani ba, da kuma saurin ja da kristal yana haifar da ingot silicon monocrystalline mai inganci.