Saddexda tilmaame ee ugu waaweyn ee xulashada garaafka semiconductor-ka

Warshadaha semiconductor-ka waa warshado saynis iyo tignoolajiyadeed oo soo koraya, kuwaas oo soo jiitay dareen badan sannadihii ugu dambeeyay, shirkado badan ayaa bilaabay inay galaan warshadaha semiconductor-ka, garaafitkuna wuxuu noqday mid ka mid ah agabka lagama maarmaanka u ah horumarinta warshadaha semiconductor-ka. Semiconductor-yadu waxay u baahan yihiin inay isticmaalaan conductivity-ga korantada ee graphite, sababtoo ah marka kaarboonku sarreeyo, waxaa wanaagsan in conductivity-ga korontada, guud ahaan waxaa loo baahan yahay in la tixgeliyo tilmaamayaasha waa: cabbirka walxaha, iska caabbinta kulaylka, daahirnimada.

Cabbirka hadhuudhku wuxuu u dhigmaa lambarrada kala duwan ee shabagga, qeexitaannadana waxaa lagu muujiyaa lambarrada shabagga. Lambarka shabagga waa tirada godadka, taas oo ah, tirada godadka inji laba jibbaaran. Guud ahaan, tirada shabagga * daloolka (micron) = 15000. Tirada shabagga ee shabagga graphite-ka gudbiya, ayaa yar cabbirka walxaha, waxqabadka saliidda ayaa ka wanaagsan, waxaa loo isticmaali karaa goobta wax soo saarka walxaha saliidda. Cabbirka walxaha loo isticmaalo warshadaha semiconductor-ka waa inuu ahaadaa mid aad u fiican, sababtoo ah way fududahay in la gaaro saxnaanta farsamaynta, xoogga cadaadiska sare, iyo khasaaraha yar, gaar ahaan caaryada sintering, oo u baahan saxnaan farsamayn sare.

Qaybinta cabbirka walxaha, sida: 20 shabaq, 40 shabaq, 80 shabaq, 100 shabaq, 200 shabaq, 320 shabaq, 500 shabaq, 800 shabaq, 1200 shabaq, 2000 shabaq, 3000 shabaq, 5000 shabaq, 8000 shabaq, 12500 shabaq, kan ugu fiican wuxuu noqon karaa 15,000 shabaq.

Badeecooyin badan oo ka tirsan warshadaha semiconductor-ka ayaa u baahan in si joogto ah loo kululeeyo, si loo kordhiyo cimriga adeegga qalabka, kaas oo u baahan garaafitka gudbiya si uu u yeesho sifooyinka soo socda: isku hallayn aad u fiican iyo iska caabinta saameynta heerkulka sare.

Shuruudaha wax soo saarka garaafitka ee warshadaha semiconductor-ka waa: daahirnimada oo sii kordheysa, way sii fiican tahay, gaar ahaan aaladaha garaafitka ee taabta labada dhexdooda, haddii ay ku jiraan wasakh aad u badan, waxay wasakhayn doonaan walxaha semiconductor-ka. Sidaa darteed, waxaan u baahanahay inaan si adag u xakameyno daahirnimada garaafitka gudbiya, waxaana sidoo kale u baahanahay inaan ku daaweyno garaafitka heerkulka sare leh si loo yareeyo heerka cawlan.