Papa Hiko Hapaira me ngā Papa LED Wafer C-plane
Whakatakotoranga
| WHĀNUI | ||
| Tātai Matū | Al2O3 | |
| Hanganga Karaihe | Pūnaha Hexagonal (hk o 1) | |
| Ahu Pūtau Waeine | a=4.758 Å,Å c=12.991 Å, c:a=2.730 | |
| TINO | ||
| Ine | Ingarihi (Emepaea) | |
| Kiato | 3.98 karamu/cc | 0.144 pauna/in3 |
| Te pakeketanga | 1525 - 2000 Knoop, 9 mhos | 3700° F |
| Te Pūwāhi Rewa | 2310 K (2040°C) | |
| HANGANGA | ||
| Kaha Kume | 275 MPa ki te 400 MPa | 40,000 ki te 58,000 psi |
| Te Kaha Kume i te 20° C | 58,000 psi (iti rawa o te hoahoa) | |
| Te Kaha Kume i te 500° C | 40,000 psi (iti rawa o te hoahoa) | |
| Te Kaha Kume i te 1000° C | 355 MPa | 52,000 psi (iti rawa o te hoahoa) |
| Kaha Whakapiko | 480 MPa ki te 895 MPa | 70,000 ki te 130,000 psi |
| Te Kaha o te Pehitanga | 2.0 GPa (mutunga) | 300,000 psi (whakamutunga) |
Hapira hei papa hiko haurua-ira
Ko ngā papa angiangi o te hapaira te whakamahinga angitu tuatahi o tētahi papa whakamahana i whakatakotoria ai te silicon ki runga hei hanga i ngā ara iahiko whakauru e kiia nei ko te silicon-on-sapphire (SOS). Haunga ōna āhuatanga whakamahana hiko tino pai, he nui te kawe wera o te hapaira. He tino pai ngā maramara CMOS i runga i te hapaira mō ngā tono auau reo irirangi (RF) mana teitei pērā i ngā waea pūkoro, ngā reo irirangi haumaru tūmatanui me ngā pūnaha whakawhitiwhiti amiorangi.
Ka whakamahia hoki ngā anga hapaira karaihe kotahi hei papa i roto i te umanga haurua-ira mō te whakatipu i ngā taputapu e hangai ana ki te gallium nitride (GaN). Mā te whakamahinga o te hapaira ka tino whakaitihia ngā utu nā te mea he tata ki te 1/7 o te utu o te germanium. Ko te GaN i runga i te hapaira ka whakamahia whānuitia i roto i ngā diode rama kikorangi (LED).
Whakamahia hei rauemi matapihi
Ko te hapaira hangai (e kiia ana ko te karāhe hapaira) he mea whakamahi pinepine hei rauemi matapihi nā te mea he tino mārama i waenga i te 150 nm (ultraviolet) me te 5500 nm (infrared) nga roangaru mārama (ko te whānuitanga e kitea ana mai i te 380 nm ki te 750 nm) ā, he tino teitei te ātete ki te rakuraku. Ngā painga matua o ngā matapihi hapaira
Whakauruhia
He whānui rawa te whānuitanga o te whakawhiti whatu, mai i te mārama UV ki te mārama tata-whero
He kaha ake i ētahi atu rauemi whatu, i ngā matapihi karāhe rānei
He tino ātete ki te rakuraku me te pakū (he pakeke kohuke o te 9 i runga i te tauine Mohs, tuarua i te taimana me te moissanite i roto i ngā matū taiao)
Teitei rawa te pūmahana rewa (2030°C)
Kauwhata Taipitopito
