Electrode Sapphire Substrate uye Wafer C-ndege LED Substrates
Tsanangudzo
| GENERAL | ||
| Chemical Formula | Al2O3 | |
| Crystal Stucture | Hexagonal System (hk o 1) | |
| Unit Cell Dimension | a=4.758 Å,Å c=12.991 Å, c:a=2.730 | |
| ZVEMUVIRI | ||
| Metric | Chirungu (Imperial) | |
| Density | 3.98 g/cc | 0.144 lb/mu3 |
| Kuoma | 1525 - 2000 Knoop, 9 mhos | 3700° F |
| Melting Point | 2310 K (2040° C) | |
| ZVINHU | ||
| Tensile Simba | 275 MPa kusvika 400 MPa | 40,000 kusvika 58,000 psi |
| Tensile Simba pa20°C | 58,000 psi (dhizaini min.) | |
| Tensile Simba pa500°C | 40,000 psi (dhizaini min.) | |
| Tensile Simba pa1000°C | 355 MPa | 52,000 psi (dhizaini min.) |
| Flexural Stength | 480 MPa kusvika 895 MPa | 70,000 kusvika 130,000 psi |
| Kusimbisa Simba | 2.0 GPA (yekupedzisira) | 300,000 psi (yekupedzisira) |
Safire se semiconductor redunhu substrate
Micheka yesafire yakatetepa ndiyo yekutanga yakabudirira kushandiswa kweiyo insulating substrate pakaiswa silicon kugadzira maseketi akabatanidzwa anonzi silicon pasafire (SOS).Kuwedzera kune ayo akanakisa emagetsi ekudzivirira emagetsi, safire ine yakakwira thermal conductivity.CMOS machipisi pasafiri anonyanya kukodzera kune yakakwirira-simba redhiyo frequency (RF) application senge mbozhanhare, veruzhinji kuchengetedza bhendi redhiyo uye setiraiti yekutaurirana masisitimu.
Single crystal sapphire wafers anoshandiswawo se substrates mu semiconductor indasitiri yekukura gallium nitride (GaN) based zvishandiso.Kushandiswa kwesafiri kunoderedza zvakanyanya mari sezvo inenge 1/7 mutengo we germanium.GaN pasafire inowanzoshandiswa mublue light emitting diodes (LEDs).
Shandisa sechinhu chehwindo
Synthetic sapphire (dzimwe nguva inodaidzwa segirazi resafire) inowanzoshandiswa sechinhu chefafitera nekuti inoonekera zvakanyanya pakati pe150 nm (ultraviolet) uye 5500 nm (infrared) wavelengths yechiedza (iyo inooneka spectrum inotangira pa380 nm kusvika 750 nm) uye ine kukwirira kwakanyanya kwekukwenya.Mabhenefiti akakosha emahwindo esafire
Batanidza
Yakanyanya kupararira optical transmission bandwidth, kubva kuUV kusvika padhuze-infrared mwenje
Yakasimba kupfuura zvimwe zvinhu zve optical kana magirazi mahwindo
Yakanyanya inopokana nekukwenya uye abrasion (mineral kuoma kwe9 pachiyero cheMohs, yechipiri chete kune diamond uye moissanite pakati pezvakasikwa zvinhu)
Yakanyanya kunyungudika (2030°C)
Detailed Diagram
