Trimethylaluminum(TMAI)
Trimethylalumane(TMAI)
| Upu tutusa | Trimethylaluminum, Aluminium Trimethyl,Alumini Trimethanide, TMA, TMAL, AlMe3, Ziegler-Natta Catalyst, Trimethyl-, Trimethylalane. |
| Numera o le Cas | 75-24-1 |
| Fua fa'akemikolo | C6H18Al2 |
| Mamafa molar | 144.17 kalama/mol, 72.09 kalama/mol (C3H9Al) |
| Foliga vaaia | Vai e leai se lanu |
| Mafiafia | 0.752 kalama/cm3 |
| Tulaga e liusuavai ai | 15℃ (59 ℉; 288K) |
| Pula le tulaga | 125--130℃ (257--266 ℉, 398--403K) |
| Fa'asolo i le vai | Tali atu |
| Mamafa o le ausa | 1.2 kPa (20 ℃), 9.24 kPa (60 ℃) |
| Malōlō | 1.12 cP (20 ℃), 0.9 cP (30 ℃) |
Trimethylaluminum (TMAl), i le avea ai o se puna u'amea-organika (MO), e fa'aaogaina lautele i le alamanuia semiconductor ma avea o se mea taua mo le atomic layer deposition (ALD), chemical vapor deposition (CVD), ma le metal-organic chemical vapor deposition (MOCVD). E fa'aaogaina e saunia ai ni ata tifaga e iai le alumini mama maualuga, e pei o le alumini oxide ma le alumini nitride. E le gata i lea, e tele le fa'aaogaina o le TMAl o se mea fa'atupu fa'alavelave ma lana sui fesoasoani i le organic synthesis ma polymerization reactions.
O le Trimethylaluminum (TMAI) e galue o se mea e muamua ai mo le fa'aputuina o le alumini oxide ma e galue o se mea e fa'agaoioi ai le Ziegler-Natta. O le mea fo'i lea e masani ona fa'aaogaina mo le alumini i le gaosiga o le metal-organic vapor-phase epitaxy (MOVPE). E le gata i lea, o le TMAI e galue o se sui o le methylation ma e masani ona fa'asa'olotoina mai roketi e fa'alogoina ai leo o se mea e su'esu'e ai mamanu o matagi i luga o le ea.
Fa'amatalaga fa'apisinisi o le 99.9999% Trimethylaluminum - Silicon maualalo ma le okesene maualalo (6N TAMI-Low Si ma Low Ox)
| Elemene | I'uga | Fa'amatalaga | Elemene | I'uga | Fa'amatalaga | Elemene | I'uga | Fa'amatalaga |
| Ag | ND | <0.03 | Cr | ND | <0.02 | S | ND | <0.05 |
| As | ND | <0.03 | Cu | ND | <0.02 | Sb | ND | <0.05 |
| Au | ND | <0.02 | Fe | ND | <0.04 | Si | ND | ≤0.003 |
| B | ND | <0.03 | Ge | ND | <0.05 | Sn | ND | <0.05 |
| Ba | ND | <0.02 | Hg | ND | <0.03 | Sr | ND | <0.03 |
| Be | ND | <0.02 | La | ND | <0.02 | Ti | ND | <0.05 |
| Bi | ND | <0.03 | Mg | ND | <0.02 | V | ND | <0.03 |
| Ca | ND | <0.03 | Mn | ND | <0.03 | Zn | ND | <0.05 |
| Cd | ND | <0.02 | Ni | ND | <0.03 | |||
| Co | ND | <0.02 | Pb | ND | <0.03 |
Fa'amatalaga:
Ae sili i lo mea uma, e taua le PPM i le mamafa i luga o le uʻamea, ma le ND = e leʻi iloa
Metotia o Su'esu'ega: ICP-OES/ICP-MS
O taunuʻuga o le FT-NMR (LOD mo le FT-NMR organic ma oxygenated impurity e 0.1ppm):
Fa'amaoniga o le okesene <0.2 ppm (Fuaina i le FT-NMR)
1. Leai ni mea leaga fa'alenatura na iloa
2. Leai ni mea leaga ua fa'a'okeseneina ua iloa
O le ā le mea e fa'aaogā i ai le Trimethylaluminum (TMAI)?
Trimethylaluminum (TMA)- Fa'aoga ma Fa'aoga
O le Trimethylaluminum (TMA) o se vailaʻau organoaluminum e matuā mama tele e avea o se mea taua i nisi o vaega gaosi oloa sili ona alualu i luma. O lona tali vave ma le mamafa o le ausa e avea ai ma mea e filifilia mo le teuina o ata tifaga saʻo o loʻo i ai le alumini i tekinolosi eletise ma le malosi, faʻapea foʻi ma se vaega faʻavae i le gaosiga o le polyolefin.
O la matou TMA ua gaosia i tulaga sili ona matuā fa'amalosia o le mama, fa'atasi ai ma le pulea lelei o elemene, okesene, ma mea leaga fa'alenatura e fa'amautinoa ai le fa'atinoga sili ona lelei i au fa'aoga sili ona faigata.
Fa'aoga Autū ma Alamanuia:
1. Fa'agaioiga o Semiconductor ma Microelectronics
I le alamanuia semiconductor, e taua tele le TMA mo le teuina o ata manifinifi ma le sa'o atoatoa e tusa ma le fua fa'a-atomika.
* High-k Dielectrics: Fa'aaogaina i le Atomic Layer Deposition (ALD) ma le Chemical Vapor Deposition (CVD) e fa'atupu ai ni ata manifinifi tutusa, e leai ni pinhole o le alumini oxide (Al₂O₃), ia e avea o ni high-k gate dielectrics i transistors fa'aonaponei ma masini manatua.
* Compound Semiconductors: O le puna alumini e sili ona lelei i le Metalorganic Vapor Phase Epitaxy (MOVPE) mo le faʻatupuina o semiconductors faʻaputuga III-V maualuga le faʻatinoga. O nei mea e taua mo:
* Eletise Fa'aeletoronika Maualuga: (e pei o le AlGaAs, AlInGaP)
* Optoelectronics: (e pei o le, AlGaN, AlInGaN)
2. Malosiaga Mama ma Photovoltaics
E mafai e le TMA ona fa'aleleia atili le lelei ma le tumau o tekinolosi o le malosiaga o le la.
* Vaega e Fa'asa'olotoina ai le Malosiaga i Luga: O ata tifaga alumini oxide (Al₂O₃) mai le TMA, e fa'aputuina e ala i le ALD po'o le Plasma-Enhanced CVD (PECVD), e maua ai le fa'asa'olotoina lelei o le malosi i luga mo sela la silicon tioata. O lenei mea e fa'aitiitia ai le toe fa'afouina o le avega o le eletise, ma i'u ai i ni fa'amanuiaga taua i le lelei o le liua o sela ma le mautu i se taimi umi.
3. Moli ma Fa'aaliga Fa'alelei (LED)
O le gaosiga o LED e pupula tele ma faʻasaoina le malosi e faʻalagolago i le TMA maualuga le mama.
* LED Epitaxy: E fai ma amataga o le alumini i totonu o reactors MOVPE e fa'atupuina ai vaega gaioi (e pei o le AlGaN) i le lanumoana, lanumeamata, ma le ultraviolet LEDs.
* Fa'agaoioia o le Masini: Fa'aaogaina e fa'aputu ai ata puipui o le alumini oxide po'o le alumini nitride e fa'aleleia atili ai le lelei o le fa'aosoina opitika ma fa'aumiumi ai le umi e fa'agaoioia ai masini LED.
4. Fa'atekonolosi Fa'apisinisi ma le Gaosiga o Polymer
O le taua o le TMA i alamanuia e mafua mai i lana matafaioi i le faʻagasologa o gaioiga faʻavavevave.
* Polyolefin Catalysis: O le mea autu lea e amata ai le gaosia o le Methylaluminoxane (MAO), o se co-catalyst taua i totonu o Ziegler-Natta ma metallocene catalyst systems. O nei faiga e gaosia ai le tele o palasitika polyethylene ma polypropylene i le lalolagi.
Uiga Autū ma Fa'amanuiaga:
* Mama Maualuga: Pulea ma le fa'aeteete e fa'aitiitia ai mea leaga e fa'aleagaina ai le fa'atinoga fa'aeletoronika ma gaioiga fa'aeletoronika.
* Precursor Sili: E ofoina atu le fesuisuia'i lelei, mautu i le vevela, ma uiga mama o le pala mo le teuina maualuga o se ata tifaga.
* Tulaga Fa'atonuina o Alamanuia: O le puna alumini ua fa'atuina ma fa'atuatuaina mo faiga MOVPE, ALD, ma CVD i nofoaga su'esu'e ma atina'e fa'alelalolagi ma gaosiga.
* Faavae mo Palasitika: O se mea mata autu e mafai ai ona gaosia ni polymers polyolefin e tele ona aoga ma taua.
Teena o Fa'amatalaga: O le Trimethylaluminum o se mea e maaleale i le susu ma e mana'omia ai ni auala fa'apitoa e taulima ai ma fa'atonutonu ai le saogalemu. O fa'amatalaga o lo'o tu'uina atu e mo ni fa'amatalaga auiliili. O le tiute o le tagata fa'aoga le taulimaina o lenei mea e tusa ai ma ta'iala saogalemu uma ma ia fuafua lona talafeagai mo se fa'aoga fa'apitoa.
