Matekinoroji Ekuchenesa Wafer uye Manyoro Ehunyanzvi​

Zviri Mukati

1.​​Zvinangwa Zvikuru uye Kukosha kweKuchenesa Wafer​

2. Kuongorora Kusvibiswa uye Matekiniki Ekuongorora Akanyanya

3. Nzira dzeKuchenesa dzepamusoro uye Nheyo dzeUnyanzvi​

4. Zvinhu Zvinokosha Pakuitwa Kwehunyanzvi uye Kudzora Maitiro​

5. Mafambiro Eramangwana uye Nzira Dzekuvandudza

6.​XKH Mhinduro Dzekupedzisira uye Sisitimu Yebasa​

Kuchenesa wafer inzira yakakosha mukugadzira semiconductor, sezvo kunyangwe tsvina yeatomu inogona kukanganisa mashandiro emudziyo kana goho. Maitiro ekuchenesa anowanzo sanganisira matanho akawanda ekubvisa tsvina dzakasiyana-siyana, dzakadai sema organic residues, tsvina yesimbi, zvidimbu, uye ma native oxides.

1. Zvinangwa zveKuchenesa Wafer

• Bvisa zvinhu zvinosvibisa zvisikwa (semuenzaniso, zvinodzivirira kutsvuka kweganda, zvigunwe).
• Bvisa tsvina yesimbi (semuenzaniso, Fe, Cu, Ni).
• Bvisa kusvibiswa kwezvikamu (semuenzaniso, guruva, zvidimbu zvesilicon).
• Bvisa ma oxides emuno (semuenzaniso, SiO₂ layers dzakaumbwa panguva yekubuda mumhepo).

2. Kukosha Kwekuchenesa Wafer Zvakasimba​

• Inovimbisa kugona kukuru kwekushanda uye kushanda zvakanaka kwemuchina.
• Inoderedza zvikanganiso uye mwero wezvimedu zvewafer.
• Inovandudza kunaka kwenzvimbo uye kugadzikana kwayo.

Usati wanyatsochenesa, zvakakosha kuongorora kusvibiswa kuripo pamusoro. Kunzwisisa mhando, kupararira kwehukuru, uye kurongeka kwenzvimbo yetsvina pamusoro pewafer kunovandudza makemikari ekuchenesa uye simba remagetsi.

3. Matekiniki Epamusoro Ekuongorora Kusvibiswa​

3.1 Kuongororwa kweZvidimbu Zvepamusoro​

• Zvishandiso zvekushandisa makombiyuta zvinoshandisa laser scattering kana computer vision kuverenga, kukura, uye kugadzira marara pamusoro penzvimbo.
• Kuwanda kwekupararira kwechiedza kunoenderana nehukuru hwezvinhu zvidiki zvakaita semakumi e nanometers uye huwandu hwakaderera se0.1 particles/cm².
• Kugadzirisa zvinhu zvinoenderana nezvinodiwa kunoita kuti hardware ishande zvakanaka. Kuongorora zvinhu usati wabvisa uye wabvisa tsvina kunoratidza kushanda zvakanaka kwekubvisa, zvichivandudza mashandiro emidziyo.

3.2 Kuongororwa kweZvinhu zveNzvimbo​

• Maitiro ekuona zvinhu pamusoro anoona kuumbwa kwezvinhu.
• X-ray Photoelectron Spectroscopy (XPS/ESCA): Inoongorora mamiriro emakemikari epamusoro nekuisa wafer neX-rays uye kuyera maerekitironi anoburitswa.
• Glow Discharge Optical Emission Spectroscopy (GD-OES): Inosvina zvidimbu zvitete zvakanyanya pamusoro pechinhu ichi panguva imwe chete ichiongorora maspectra anobuda kuti ione kuumbwa kwezvinhu zvinoenderana nekudzika kwechinhu chacho.
• Miganhu yekuona inosvika zvikamu pamiriyoni (ppm), zvichitungamira kusarudzwa kwakanakisa kwemakemikari ekuchenesa.

3.3 Kuongorora Kusvibiswa kweMaumbirwo​​

• Kuskena Electron Microscopy (SEM): Kunotora mifananidzo ine resolution yepamusoro kuratidza maumbirwo ezvinosvibisa uye aspect ratios, zvichiratidza nzira dzekunamatira (makemikari vs. mechanical).
• Microscopy yeAtomic Force (AFM): Mepu ye nanoscale topography kuti ione kukwirira kwezvikamu uye hunhu hwemakanika.
• Focused Ion Beam (FIB) Milling + Transmission Electron Microscopy (TEM): Inoratidza zvinhu zvakavigwa mukati memuviri.

4. Nzira Dzekuchenesa Dzakafambira Mberi

Kunyange zvazvo kuchenesa zvinonyungudutsa kuchibvisa zvinosvibisa zvechisikigo zvinobudirira, mamwe matekiniki epamusoro anodiwa kune zvimedu zvisina organic, masara esimbi, uye zvinosvibisa zveionic:

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4.1 Kuchenesa kweRCA​​

• Yakagadzirwa neRCA Laboratories, nzira iyi inoshandisa nzira yekugeza miviri kubvisa tsvina yepolar.
• SC-1 (Standard Clean-1): Inobvisa tsvina yemuchadenga nezvidimbu uchishandisa musanganiswa weNH₄OH, H₂O₂, uye H₂O​​ (semuenzaniso, chiyero che1:1:5 pa ~20°C). Inogadzira chidimbu chakatetepa chesilicon dioxide.
• SC-2 (Standard Clean-2): Inobvisa tsvina yesimbi uchishandisa HCl, H₂O₂, uye H₂O​​ (semuenzaniso, chiyero che1:1:6 pa ~80°C). Inosiya nzvimbo isina chinhu.
• Inoenzanisa kuchena nekudzivirira pamusoro.

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4.2 Kucheneswa kweOzone​​

• Inonyudza mawafer mumvura yakasanganiswa neozone (O₃/H₂O)​​.
• Inobvisa oxidize uye organics zvinobudirira pasina kukuvadza wafer, ichisiya pamusoro usina makemikari.

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4.3 Kuchenesa Megasonic.

• Inoshandisa simba re ultrasonic rinoita frequency (kazhinji 750–900 kHz) pamwe chete nemhinduro dzekuchenesa.
• Inogadzira mabhuru anoburitsa tsvina. Inopinda mu geometri dzakaoma uku ichideredza kukuvara kwezvivako zvisina kusimba.

4.4 Kuchenesa kweCryogenic​​

• Inotonhodza mawafer nekukurumidza kusvika pakupisa kwakanyanya, ichibvisa tsvina.
• Kusukurudza kana kukwesha zvinyoro nyoro kunobvisa zvidimbu zvisina kusimba. Kunodzivirira kusvibiswa uye kupararira pamusoro.
• Maitiro ekukasika, akaoma uye asingashandisi makemikari akawanda.

Mhedziso:
Semupi wemhinduro dzemaseconductor akazara, XKH inotungamirirwa nehunyanzvi hwetekinoroji uye zvinodiwa nevatengi kuti vape masevhisi akasiyana-siyana anosanganisira kupihwa kwemidziyo yepamusoro-soro, kugadzirwa kwewafer, uye kuchenesa nemazvo. Hatingope chete michina ye semiconductor inozivikanwa pasi rose (semuenzaniso, michina ye lithography, masisitimu ekucheka) ine mhinduro dzakagadzirirwa isu asiwo matekinoroji ekutanga - anosanganisira kuchenesa kweRCA, kuchenesa ozone, uye kuchenesa kwe megasonic - kuve nechokwadi chekuchena kweatomu pakugadzira wafer, zvichiwedzera zvakanyanya kugona kwevatengi uye kugona kwekugadzira. Tichishandisa timu dzinokurumidza kupindura uye network dzebasa dzakangwara, tinopa rutsigiro rwakakwana kubva pakuisa michina nekugadzirisa maitiro kusvika pakugadzirisa zvinofanotaurwa, tichipa vatengi simba rekukunda matambudziko ehunyanzvi uye kufambira mberi kusvika pakuvandudza semiconductor kwakanyatsojeka uye kwakasimba. Sarudza isu kuti tiwane hunyanzvi hwehunyanzvi uye kukosha kwekutengeserana.