O le a le Gallium Nitride?

Gallium Nitride o se binary III / V tuusao bandgap semiconductor e fetaui lelei mo maualuga-malosi transistors mafai ona faʻatautaia i maualuga vevela. Talu mai le 1990s, ua faʻaaoga masani i malamalama emitting diodes (LED). Gallium nitride aveese se lanumoana moli faʻaaoga mo tisiketi faitauga i le Blu-ray. I se faʻaopopoga, gallium nitride o loʻo faʻaaogaina i masini eletise semiconductor, vaega RF, lasers, ma ata puʻe uila. I le lumanaʻi, o le a tatou vaʻaia GaN i sensor tekonolosi.

I le 2006, faaleleia-mode GaN transistors, o nisi taimi e taʻua o GaN FETs, na amata gaosia e le totoina o se manifinifi vaega o GaN i luga o le AIN vaega o le masani silika wafer faʻaaogaina uamea faʻatupuina ausa vailaʻau (MOCVD). O le AIN layer e galue o se buffer i le va o le substrate ma GaN.
O lenei gaioiga fou na mafai ai ona mafai ona gaosia i totonu o fale gaosi e tasi e pei o le silicon, le toe faʻaaogaina o gaioiga. I le faʻaaogaina o se gaioiga masani, o lenei faʻatagaina mo tutusa, maualalo gaosiga tau ma faʻaititia le papupuni i vaetamaina mo laiti transistors ma sili atu faʻaleleia galuega.

Ina ia faʻamatala atili, o mea uma semiconductor mea e taua o le bandgap. Ole malosiʻaga lea ile paʻu e le mafai ai ona iai ni electron. I se faaupuga faigofie, o se fusi e fesoʻotaʻi ma le lelei e mafai ai e se mea mautu ona faʻatautaia le eletise. O le Gallium nitride e i ai le 3.4 eV bandgap, faʻatusatusa i le silicon's 1.12 eV bandgap. Gallium nitride's lautele fusi avanoa o lona uiga e mafai ona lagolagoina maualuga voltages ma maualuga vevela nai lo silicon MOSFETs. Lenei lautele bandgap mafai ai gallium nitride ia faʻaaogaina i optoelectronic maualuga-paoa ma maualuga-taimi masini.

O le mafai ona faʻagaioia i le maualuga maualuga o le vevela ma voltages nai lo gallium arsenide (GaAs) transistors faia foi gallium nitride lelei mana amplifiers mo microwave ma terahertz (ThZ) masini, e pei o atatusi ma lagona, o le lumanaʻi maketi taʻua i luga. GaN tekinolosi ua i ai ma folafola mai e faia mea uma sili atu.

 


Taimi Post: Oketopa-14-2020