Nalalka LED-ku waxay iftiimiyaan adduunkeena, oo xudunta LED kasta oo waxqabad sare leh ayaa ku jirtabuskudka epitaxial—qayb muhiim ah oo qeexaysa dhalaalkeeda, midabkeeda, iyo waxtarkeeda. Iyagoo baranaya cilmiga koritaanka epitaxial, soosaarayaashu waxay furayaan fursado cusub oo loogu talagalay xalalka nalalka ee tamarta badbaadinaya iyo kuwa kharash-ool ah.
1. Farsamooyinka Kobaca Caqliga Badan si loo helo Hufnaan Weyn
Habka kobaca laba-tallaabo ee caadiga ah ee maanta, inkastoo uu waxtar leeyahay, wuxuu xaddidayaa baaxadda. Inta badan fal-galayaasha ganacsiga waxay beeraan lix wafer oo keliya dufcaddiiba. Warshadu waxay u wareegaysaa dhanka:
- Falaareyaal awood sare lehkuwaas oo maamula wafer badan, yareeya kharashyada iyo kor u qaadida wax soo saarka.
- Mashiinno hal-wafer ah oo aad u otomaatig ahsi loo helo joogteyn sare iyo ku celcelin.
2. HVPE: Waddo Degdeg ah oo loo maro Substrates Tayo Sare leh
Hydride Vapor Phase Epitaxy (HVPE) si dhakhso ah ayay u soo saartaa lakabyada GaN ee qaro weyn oo leh cillado yar, oo ku habboon substrate-ka hababka kale ee koritaanka. Filimadan GaN ee iskood u taagan xitaa waxay la tartami karaan jajabyada GaN ee waaweyn. Qabashada? Dhumucda way adag tahay in la xakameeyo, kiimikooyinkuna waxay burburin karaan qalabka waqti ka dib.
3. Kobaca Dhinaca: Kiristaal Siman, Iftiin Ka Fiican
Iyagoo si taxaddar leh u qaabeynaya maaskaro iyo daaqado, soosaarayaashu waxay GaN ku hagayaan inay kor u kacaan oo keliya, laakiin sidoo kale dhinac. "Epitaxy-gan" wuxuu buuxiyaa meelaha bannaan iyadoo cillado yar la siinayo, taasoo abuureysa qaab-dhismeed kiristaal oo aan cillad lahayn oo loogu talagalay LED-yada waxtarka sare leh.
4. Pendeo-Epitaxy: U daa kiristaalo inay sabeeyaan
Waa kan wax xiiso leh: injineeradu waxay ku beeraan GaN tiirar dhaadheer ka dibna waxay u daayaan inay "buundo" ka dul marto meel bannaan. Kobaca sabayntu wuxuu baabi'iyaa culayska badan ee ay keenaan walxaha aan isku mid ahayn, taasoo keenta lakabyo kiristaalo ah oo ka xoog badan oo saafi ah.
5. Iftiiminta Shaxanka UV-ga
Agab cusub ayaa si qoto dheer u riixaya iftiinka LED-ka ee heerka UV-ga. Maxay arrintani muhiim u tahay? Iftiinka UV wuxuu kicin karaa fosfoorasyada horumarsan iyadoo leh hufnaan aad uga sarreysa xulashooyinka dhaqameed, taasoo albaabka u furaysa LED-yada cad ee jiilka xiga kuwaas oo labaduba iftiimaya oo tamar badan ku shaqeeya.
6. Jajabyada Ceelasha Quantum-ka Badan: Midab ka soo jeeda Gudaha
Halkii la isku dari lahaa LED-yada kala duwan si loo sameeyo iftiin cad, maxaad u wada korin weyday hal? Chips-yada ceelka badan (MQW) waxay sidaas sameeyaan iyagoo ku dhejinaya lakabyo soo saara hirar kala duwan, iyagoo si toos ah ugu daraya iftiinka gudaha chip-ka. Waa mid hufan, is haysta, oo qurux badan—inkastoo ay adag tahay in la soo saaro.
7. Nalalka Dib-u-warshadaynta iyadoo la adeegsanayo Photonics
Sumitomo iyo Jaamacadda Boston waxay muujiyeen in walxaha la isku dhejiyo sida ZnSe iyo AlInGaP ee ku yaal LED-yada buluugga ah ay "dib u warshadayn karaan" photons-ka una rogi karaan spectrum cad oo buuxa. Farsamadan lakabka caqliga leh waxay ka tarjumaysaa isku-darka xiisaha leh ee sayniska agabka iyo photonics-ka ee ka shaqeeya naqshadeynta casriga ah ee LED-ka.
Sidee loo sameeyaa Waferada Epitaxial-ka ee LED-ka
Laga bilaabo substrate ilaa chip, halkan waa safar fudud:
- Marxaladda Kobaca:Substrate → Naqshadeynta → Kaydka → N-GaN → MQW → P-GaN → Anal → Kormeerka
- Marxaladda Samaynta:Maaskaro → Lithography → Etching → N/P Elektroodhyada → Dicing → Kala soocidda
Habkan taxaddar leh wuxuu hubinayaa in jajab kasta oo LED ah uu bixiyo waxqabad aad ku kalsoonaan karto - ha ahaato shidista shaashaddaada ama magaaladaada.
Waqtiga boostada: Luulyo-08-2025