Ma LED anovhenekera nyika yedu, uye pakati pema LED ese anoshanda zvakanaka ndipo panechifukidziro che epitaxial—chinhu chakakosha chinotsanangura kupenya kwayo, ruvara, uye kushanda kwayo zvakanaka. Nekuziva sainzi yekukura kwe epitaxial, vagadziri vari kuvhura mikana mitsva yekugadzirisa magetsi nenzira dzinochengetedza simba uye dzinodhura zvishoma.
1. Maitiro Ekukura Akangwara Kuti Ubudirire Zvakanyanya
Maitiro ekukura kwezvikamu zviviri ari kuitwa nhasi, kunyangwe zvichishanda, anoderedza kugona kukura. Mazhinji ema reactors ekutengesa anokura ma wafers matanhatu chete pa batch imwe neimwe. Indasitiri iyi iri kuchinja kuenda ku:
- Ma reactor ane simba gurudzinobata mawafer akawanda, dzichideredza mitengo uye dzichiwedzera simba rekushandisa.
- Michina yekuwachisa imwe chete inoshanda otomatiki zvikurukuti zvive nyore uye zvirambe zvichidzokororwa.
2. HVPE: Nzira Inokurumidza Kuenda Kuzvinhu Zvidiki Zvemhando Yepamusoro
Hydride Vapor Phase Epitaxy (HVPE) inokurumidza kugadzira zvidimbu zveGaN gobvu zvisina zvikanganiso zvakawanda, zvakanaka sezvishandiso zvedzimwe nzira dzekukura. Mafirimu aya eGaN anomira ari ega anogona kutokwikwidzana nemachipisi eGaN akawanda. Kubata kwacho here? Kukobvu kwakaoma kudzora, uye makemikari anogona kukanganisa michina nekufamba kwenguva.
3. Kukura Kwemativi: Makristasi Akatsetseka, Chiedza Chiri Nani
Nekunyatsogadzira mapatani ewafer nemamasiki nemahwindo, vagadziri vanotungamira GaN kuti ikure kwete mudenga chete, asiwo nepadivi. Iyi "lateral epitaxy" inozadza mipata nezvikanganiso zvishoma, zvichiita kuti pave nechimiro chekristaro chisina chachinokanganisa ma LED anoshanda zvakanyanya.
4. Pendeo-Epitaxy: Kurega Makristasi Achiyangarara
Heino chimwe chinhu chinonakidza: mainjiniya vanokura GaN pamatanda marefu vobva vairega "vachiyambuka" pamusoro penzvimbo isina chinhu. Kukura uku kunoyangarara kunobvisa kushushikana kwakawanda kunokonzerwa nezvinhu zvisina kuenzana, zvichikonzera zvidimbu zvekristaro zvakasimba uye zvakachena.
5. Kupenya kweUV Spectrum
Zvinhu zvitsva zviri kusundira chiedza che LED mukati me UV range. Nei izvi zvichikosha? Chiedza che UV chinogona kumutsa phosphors yepamusoro nekushanda kwakanyanya kupfuura dzimwe nzira dzechinyakare, zvichivhura mukana we LED dzechizvarwa chinotevera dzakapenya uye dzinoshandisa simba shoma.
6. Machipisi eMutsime weMulti-Quantum: Penda kubva mukati
Pane kubatanidza ma LED akasiyana kuti agadzire chiedza chichena, wadii kuagadzira ese ari maviri? Machipisi eMulti-quantum well (MQW) anoita izvozvo nekuisa ma layers anoburitsa ma wavelength akasiyana, achisanganisa chiedza zvakananga mukati mechip. Inoshanda zvakanaka, yakamanikana, uye inoyevedza—kunyange zvazvo yakaoma kugadzira.
7. Kudzokorodza Mwenje nePhotonics
Sumitomo neBoston University vakaratidza kuti kuisa zvinhu zvakaita seZnSe neAlInGaP pamaLED ebhuruu kunogona "kudzokorodza" maphoton kuita machena akazara. Iyi nzira yekuchenjera yekuisa mafoton inoratidza kusanganiswa kunonakidza kwesainzi yezvinhu uye maphotonics ari kushanda mukugadzira maLED emazuva ano.
Magadzirirwo e LED Epitaxial Wafers
Kubva pakugadzira substrate kusvika pakugadzira chips, heino rwendo rwakareruka:
- Chikamu Chekukura:Substrate → Dhizaini → Buffer → N-GaN → MQW → P-GaN → Anneal → Kuongorora
- Chikamu Chekugadzira:Kuvhara Masiki → Lithography → Kucheka → N/P Electrodes → Kucheka → Kuronga
Maitiro aya anonzwisisika anoita kuti chip yega yega ye LED ishande zvakanaka—ingave ichibatidza skrini yako kana guta rako.
Nguva yekutumira: Chikunguru-08-2025