He aha ka Gallium Nitride?

ʻO Gallium Nitride kahi binary III / V pololei bandgap semiconductor i kūpono kūpono no nā transistors mana kiʻekiʻe hiki ke hana ma nā mahana wela. Mai ka makahiki 1990, ua hoʻohana mau ʻia ia i nā diode emitting light (LED). Hāʻawi ʻo Gallium nitride i kahi kukui polū i hoʻohana ʻia no ka heluhelu disc ma Blu-ray. Hoʻohui ʻia, hoʻohana ʻia ka nitrium gallium i nā mana uila semiconductor, nā mea RF, nā laser, a me nā photonics. I ka wā e hiki mai ana, ʻike mākou iā GaN i ka ʻenehana ʻenekini.

I ka 2006, hoʻomaka-hana GaN transistors, i kekahi manawa i kapa ʻia ʻo GaN FETs, i hoʻomaka ʻia e ka ulu ʻana i kahi papa lahilahi o GaN ma ka papa AIN o kahi wafer silikone maʻamau e hoʻohana ana i ka hoʻoheheʻe ʻia o ka mahu o nā mea kanu (MOCVD). Hana ka papa AIN ma ke ʻano he buffer ma waena o ka substrate a me GaN.
ʻO kēia hana hou i hiki ai i nā transistors gallium nitride ke hana ʻia i loko o nā hale hana like e like me ke silikone, me ka hoʻohana ʻana i nā kaʻina hana like. Ma ka hoʻohana ʻana i kahi hana i ʻike ʻia, ʻae kēia i nā kumukūʻai hana haʻahaʻa a like hoʻi a hoʻoliʻiliʻi i ka pale i ke ʻae no nā transistors liʻiliʻi me ka hoʻomaikaʻi maikaʻi ʻana.

I mea e wehewehe hou aku ai, loaʻa i nā mea semiconductor āpau ka mea i kapa ʻia he bandgap. He pae ikehu kēia i loko o kahi paʻa kahi hiki ʻole i nā uila uila ke noho. Ma ka maʻalahi, pili kahi bandgap i ka maikaʻi o ka hiki i kahi mea paʻa ke alakaʻi i ka uila. He 3.4 eV bandgap kā Gallium nitride, hoʻohālikelike ʻia me ka bandgap 1.12 eV silikone. ʻO ka hakahaka o ka bandium ākea o Gallium nitride hiki iā ia ke kākoʻo i nā volta kiʻekiʻe a me nā mahana kiʻekiʻe ma mua o nā silicon MOSFET. Hāʻawi kēia bandgap ākea i ka gallium nitride e hoʻopili ʻia i nā mana kiʻekiʻe optoelectronic a me nā ʻoihana kiʻekiʻe.

ʻO ka hiki ke hana ma nā mahana kiʻekiʻe a me nā uila i ʻoi aku ma mua o nā transistors gallium arsenide (GaAs) hana pū kekahi i nā mea hoʻonui mana gallium nitride no nā mīkini uila a me terahertz (ThZ), e like me ke kiʻi a me ka ʻike ʻana, ka mākeke e hiki mai ana i ʻōlelo ʻia ma luna. Aia ma ʻenehana ʻo GaN a hoʻohiki ia e hoʻomaikaʻi i nā mea āpau.

 


Ka manawa Post: ʻOkakopa-14-2020