Sapphire Substrate
Bayani
Sapphire (Al2O3) kristal guda ɗaya shine kyakkyawan kayan aiki da yawa.Yana da babban juriya na zafin jiki, kyakkyawar tafiyar zafi, babban taurin, watsa infrared da kuma kwanciyar hankali mai kyau.Ana amfani da shi sosai a fannoni da yawa na masana'antu, tsaro na ƙasa da bincike na kimiyya (kamar tagar infrared mai zafin jiki).A lokaci guda, shi ma wani nau'i ne na kayan da ake amfani da shi na kristal guda ɗaya.Yana da zaɓi na farko na zaɓi a cikin shuɗi, violet, farin haske-emitting diode (LED) da masana'antar laser blue (LD) (fim ɗin gallium nitride yana buƙatar zama epitaxial akan sapphire substrate na farko), kuma yana da mahimmancin haɓakawa. fim substrate.Baya ga tsarin Y, tsarin La da sauran fina-finai masu girman zafin jiki, ana iya amfani da shi don haɓaka sabbin fina-finai masu inganci na MgB2 (magnesium diboride) (yawanci madaidaicin kristal guda ɗaya za a lalata ta hanyar sinadarai yayin ƙirƙirar MgB2). fina-finai).
Kayayyaki
| Crystal Purity | > 99.99% |
| Melt Point (℃) | 2040 |
| Yawan yawa (g/cm3) | 3.98 |
| Hardness (Mho) | 9 |
| Thermal Fadada | 7.5 (x10-6/oC) |
| Takamaiman Zafi | 0.10 (cal /oC) |
| Thermal Conductivity | 46.06 @ 0oC 25.12 @ 100oC, 12.56 @ 400oC (W/(mK)) |
| Dielectric Constant | ~ 9.4 @ 300K a Axis ~ 11.58@ 300K a C axis |
| Rashin Tangent a 10 GHz | <2x10-5a axis, <5 x10-5ku C axis |
Ma'anar Sapphire Substrate
Sapphire substrate yana nufin wani abu na gaskiya wanda aka yi da kristal aluminum oxide guda ɗaya (Al2O3).Ana amfani da kalmar "sapphire" sau da yawa don kwatanta nau'in gemstone na corundum, wanda yawanci launin shudi ne.Duk da haka, dangane da abubuwan da ake amfani da su, sapphire yana nufin wani girma na wucin gadi, marar launi, babban kristal da ake amfani da shi a aikace-aikace iri-iri.Ga wasu mahimman bayanai game da sapphire substrates:
1. Tsarin Crystal: Sapphire yana da tsarin crystal mai hexagonal wanda a cikinsa ana jera su akai-akai na atom na aluminum da oxygen atom.Yana cikin tsarin kristal trigonal.
2. High hardness: Sapphire yana daya daga cikin kayan aiki mafi wuya da aka sani, tare da taurin Mohs na 9. Wannan ya sa ya zama mai jurewa da lalata, yana ba da gudummawa ga dorewa da tsawon lokaci a cikin aikace-aikacen.
3. Watsawar haske: Sapphire yana da kyakkyawan watsa haske, musamman a cikin bayyane da kuma kusa da yankunan infrared.Yana iya watsa haske daga kusan 180nm zuwa 5500nm, yana sa ya dace da kewayon aikace-aikacen gani da na gani.
4. Thermal da inji Properties: Sapphire yana da kyau thermal da inji Properties, high narkewa batu, low thermal fadada coefficient, da kuma m thermal watsin.Zai iya jure yanayin zafi mai zafi, damuwa na inji da hawan keke na zafi, yana sa ya dace da yawan zafin jiki da aikace-aikacen wutar lantarki.
5. Tsaftar sinadarai: Sapphire yana da kwanciyar hankali mai yawa kuma yana iya tsayayya da yawancin acid, alkalis da sauran kaushi.Wannan yanayin yana tabbatar da dorewa da amincinsa a wurare daban-daban masu tsauri.
6. Kayayyakin wutar lantarki: Sapphire shine ingantaccen insulator na lantarki, wanda ke da fa'ida ga aikace-aikacen da ke buƙatar keɓancewar lantarki ko rufi.
7. Aikace-aikace: Sapphire substrates ana amfani dasu sosai a cikin optoelectronics, semiconductors, diodes masu haske, diodes laser, windows na gani, kallon lu'ulu'u da bincike na kimiyya.
Sapphire substrates suna da ƙima sosai don haɗuwa da abubuwan gani, injiniyoyi, thermal da sinadarai.Fitattun kayan kayan sa sun sa ya dace da aikace-aikacen buƙatun da ke buƙatar tsayi mai tsayi, babban tsaftar gani, rufin lantarki da juriya ga abubuwan muhalli.
