ʻO ka substrate GaAs
wehewehe
ʻO Gallium Arsenide (GaAs) kahi hui koʻikoʻi III-Ⅴ hui pūhui semiconductor, hoʻohana nui ʻia i ke kula o ka optoelectronics a me ka microelectronics.Hoʻokaʻawale ʻia ʻo GaAs i ʻelua mau ʻāpana: semi-insulating GaAs a me N-type GaAs.Hoʻohana nui ʻia ka GaA semi-insulating e hana i nā kaapuni i hoʻohui ʻia me nā hale MESFET, HEMT a me HBT, i hoʻohana ʻia i ka radar, microwave a me nā kamaʻilio nalu millimeter, nā kamepiula ultra-high-speed a me nā kamaʻilio fiber optical.Hoʻohana nui ʻia ka N-type GaAs ma LD, LED, kokoke i nā laser infrared, quantum well-power lasers a me nā pūnaewele solar kiʻekiʻe.
Waiwai
| Crystal | Doped | ʻAno hoʻokele | Kūlana o nā kahe cm-3 | ʻO ka mānoanoa cm-2 | ʻAno ulu |
| GaAs | ʻAʻohe | Si | / | <5×105 | LEC |
| Si | N | >5×1017 | |||
| Cr | Si | / | |||
| Fe | N | ~2×1018 | |||
| Zn | P | >5×1017 |
ʻO ka wehewehe ʻana o GaAs substrate
ʻO ka pāpaʻi GaAs e pili ana i kahi pani i hana ʻia me ka gallium arsenide (GaAs) mea aniani.ʻO GaAs kahi semiconductor pūhui i haku ʻia me nā mea gallium (Ga) a me arsenic (As).
Hoʻohana pinepine ʻia nā substrates GaAs i nā ʻoihana uila a me nā optoelectronics ma muli o kā lākou mau waiwai maikaʻi.ʻO kekahi mau waiwai koʻikoʻi o nā substrate GaAs:
1. ʻO ka mobility electron kiʻekiʻe: Loaʻa i ka GaA ka mobility electron kiʻekiʻe ma mua o nā mea semiconductor maʻamau e like me ke silicon (Si).ʻO kēia hiʻohiʻona e kūpono i ka substrate GaAs no nā lako uila mana kiʻekiʻe.
2. ʻAha hui pololei: Loaʻa i ka GaAs kahi āwāwa pololei, ʻo ia hoʻi, hiki ke hoʻokuʻu ʻia ka māmā i ka wā e hui hou ai nā electrons a me nā puka.Hana kēia hiʻohiʻona i nā substrates GaAs i kūpono no nā noi optoelectronic e like me nā kukui emitting diodes (LED) a me nā lasers.
3. Wide Bandgap: Loaʻa i ka GaAs kahi bandgap ʻoi aku ka nui ma mua o ke silika, hiki iā ia ke hana i nā wela kiʻekiʻe.Hāʻawi kēia waiwai i nā polokalamu GaAs e hana maikaʻi loa i nā kaiapuni wela kiʻekiʻe.
4. Haʻahaʻa haʻahaʻa: GaAs substrates hōʻike haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa, e kūpono ia no nā mea hoʻonui haʻahaʻa haʻahaʻa a me nā noi uila ʻē aʻe.
Hoʻohana nui ʻia nā substrates GaAs i nā mea uila a me optoelectronic, me nā transistors kiʻekiʻe, microwave integrated circuits (ICs), photovoltaic cell, photon detectors, a me nā cell solar.
Hiki ke hoʻomākaukau ʻia kēia mau substrates me ka hoʻohana ʻana i nā ʻenehana like ʻole me Metal Organic Chemical Vapor Deposition (MOCVD), Molecular Beam Epitaxy (MBE) a i ʻole Liquid Phase Epitaxy (LPE).ʻO ke ala ulu kūikawā i hoʻohana ʻia e pili ana i ka noi i makemake ʻia a me nā koi kūpono o ka substrate GaAs.
