Pob zeb diamond Thermal Management: Peb Txoj Kev Siv Khoom Sib Piv
Sep 05, 2026
Tso lus
Pob zeb diamond Thermal Management: Peb Txoj Kev Siv Khoom Sib Piv
Pob zeb diamond- tooj liab composites, ntshiab CVD polycrystalline pob zeb diamond, thiab ib leeg -crystal pob zeb diamond - txhua tus cog lus heev thermal conductivity, tab sis lawv cov kev ua tau zoo, nqi, thiab kev siv diverge heev.
Raws li cov chips shrinkage thiab lub zog ceev nce, kev tswj thermal tau dhau los ua qhov kev txwv tsis pub ua haujlwm. Tooj thiab txhuas tau ua haujlwm rau kev lag luam rau ntau xyoo lawm, tab sis lawv cov thermal conductivity yog tsoo lub qab nthab. Tias yog vim li cas lub ntiaj teb semiconductor tig mus rau cov khoom siv uas muaj zog heev: pob zeb diamond.
Nrog thermal conductivity tsib mus rau rau lub sij hawm ntawm tooj liab, pob zeb diamond yog inherently ib tug superior tshav kub kis. Tab sis tig nws mus rau hauv ib qho kev daws teeb meem thermal tau tsim peb txoj kev siv tshuab sib txawv -pob zeb diamond - tooj liab composites, ntshiab CVD polycrystalline pob zeb diamond, thiabib leeg -pob zeb diamond. Txawm hais tias txhua tus qhia lo lus "pob zeb diamond," lawv qhov kev ua tau zoo, cov ntsiab lus ntawm tus nqi, thiab cov phiaj xwm siv tau txawv heev.
Txhua yam khoom tiag tiag yog dab tsi
Peb txoj kev, peb qhov sib txawv ntawm cov khoom siv architectures.
Pob zeb diamond -Copper Composite
Ntshiab CVD Polycrystalline
Tib -Crystal Diamond
Los ntawm sab laug mus rau sab xis: pob zeb diamond- tooj liab composite disc, translucent CVD polycrystalline pob zeb diamond wafer, thiab ntshiab ib leeg -crystal pob zeb diamond - peb cov khoom architectures rau tib lub thermal sib tw.
Pob zeb diamond{0}} tooj liab compositesmuab cov pob zeb hluavtaws hluavtaws ua cov khoom siv thermally conductive nrog cov tooj liab matrix, fabricated los ntawm infiltration lossis sintering. Pawg- cov qib tsim tau feem ntau ncav cuag 600–900 W/m·K, thaum cov qauv kuaj nrog 3D network architectures tau tshaj 1,000 W/m·K. Lawv qhov txiaj ntsig loj tshaj plaws yog qhov sib txawv ntawm cov thermal expansion (CTE): los ntawm kev sib txawv ntawm cov pob zeb diamond ntim feem ntawm 40% mus rau 70%, CTE tuaj yeem hu rau 4-10 ppm / K, sib piv silicon, silicon carbide, thiab gallium nitride. Cov kev sib tw yog cov dej tsis zoo ntawm lub pob zeb diamond- tooj liab interface (lub kaum sab xis ntawm 140 degree), uas yuav tsum tau carbide - tsim cov txheej xws li titanium lossis chromium los tsim kom muaj cua sov zoo - hloov txoj kev.
Ntshiab CVD polycrystalline pob zeb diamondyog zus los ntawm microwave plasma chemical vapor deposition (MPCVD) thiab tsis muaj theem hlau. Nws cov thermal conductivity spans ntau yam - kwv yees li 1,000 W/m·K rau qib qis thiab tshaj 2,200 W/m·K rau siab- cov khoom qib - nyob ntawm seb qhov loj npaum li cas. Cov nplej loj dua txhais tau tias tsawg dua cov ciam teb thiab tsis tshua muaj phonon tawg, thawb cov conductivity ze rau ib qho - crystal theem. Nrog rau CTE txog li 1 ppm / K, rwb thaiv tsev hluav taws xob zoo heev, tshuaj lom neeg tsis muaj zog, thiab lub zog ua haujlwm siab, nws yog qhov zoo{12}} cov khoom siv thermal. Yim-inch heat spreaders twb nyob rau hauv loj lawm. Lub downside yog hardness: dicing thiab polishing yog qeeb thiab noj cov cuab yeej sai, uas ntxiv ho rau tus nqi.
Tib -pob zeb diamondsawv cev rau cov thermal conductivity txwv ntawm cov khoom- lub xeev cov ntaub ntawv, tsis tu ncua xa 2,000–2,400 W/m·K. Nws yog tsim los ntawm CVD homoepitaxy ntawm kev mob siab rau ib leeg - Crystal noob, yuav tsum tau tswj cov txheej txheem nruj heev. Ntiaj teb no ntau lawm yog concentrated ntawm 1-2 ntiv tes; Xyoo 2026, Element Six thiab Orbray tau ua tiav 3-inch ua tiav, thaum 4-inch tseem nyob hauv kev txhim kho. Qhov kev sib tw tseem ceeb yog kev tswj tsis raug thiab tawm los - raws li qhov loj me, qhov sib txawv thiab cov menyuam ntxaib ua rau muaj feem ntau dua, thiab thaj tsam siv tau poob qis heev. Cov ntawv thov tam sim no txwv rau kev ua haujlwm thawj zaug xws li kev tiv thaiv, satellite payloads, thiab 6G RF li.
Gradient, Tsis yog Hierarchy
Thermal conductivity thiab CTE txuam qhia ob zaj dab neeg sib txawv.
Thermal conductivity ntawm ib sab
Bar widths scaled rau siab tshaj plaws conductivity (2,400 W/m·K=100%). Pob zeb diamond- tooj liab: 1.5–2.3 × tooj liab; CVD polycrystalline: 2.5-5.5 ×; ib leeg -crystal: 5–6 ×.
Thermal conductivity ua kom pom tseeb gradient. Pob zeb diamond- tooj liab composites xa 1.5–2.3 × cov conductivity ntawm ntshiab tooj liab - txaus kom xa cov ntsiab lus junction-kub txo nyob rau hauv feem ntau lub hwj chim- semiconductor scenarios. Pure CVD polycrystalline pob zeb diamond zaum ntawm qhov nruab nrab ntawm kwv yees li 1,500 W / m·K, lossis 2.5–5.5 × tooj liab. Ib leeg-pob zeb diamond crystal nyob twj ywm siab dua 2,000 W/m·K, mus txog qhov txwv ntawm cov khoom siv.
CTE Matching: Flexibility vs. Extremes
Kev sib piv CTE yog qhov tseem ceeb sib npaug vim tias nws txiav txim siab kev ntseeg tau raws li kev sib tw thermal. Qhov kev sib tw tsis zoo ua rau muaj kev ntxhov siab cuam tshuam nrog kev sib txuam thiab ua kom lub cev qaug zog.
Pob zeb diamond -CopperTunable
CTE adjustable los ntawm 4-10 ppm / K los ntawm txawv pob zeb diamond ntim feem. Nws tuaj yeem sib phim rau silicon (~ 2.6), SiC (~ 4.0), thiab GaN (~ 5.6). Yeej ntawm adaptability hla cov khoom sib txawv.
Pure CVD / Ib leeg -CrystalUltra{0}} qis
CTE ntawm ~ 1 ppm / K tuaj yeem tsim kev ntxhov siab tseem ceeb ntawm qhov tuag- cua sov- kis tau tus mob. Feem ntau yuav tsum tau nruab nrab txheej los yog ua raws li cov solders. Pursues qhov kawg conductivity ntawm tus nqi ntawm kev ntxhov siab ntxiv engineering.
Ib lub tswv yim tseem ceeb ntawm kev hloov pauv; lwm tus nrhiav qhov kawg conductivity ntawm tus nqi ntawm kev tswj kev ntxhov siab ntxiv. Lawv sawv cev rau ob txoj kev xav sib txawv, tsis yog qhov yooj yim zoo dua - lossis - qhov sib npaug phem dua.
Tus nqi: Orders of Magnitude Apart
Tus nqi sib txawv yog qhov twg peb txoj kev sib txawv feem ntau pom tau.
Pob zeb diamond- tooj liab composites tam sim no raug nqi kwv yees li 3–5 × tooj liab ntshiab, nrog 4-inch heat spreaders nkag mus rau sub- txhiab-yuan ntau yam. Rau cov nqi-rhiab cov ntaub ntawv chaw xa tawm, tus nqi no tuaj yeem rov qab los ntawm kev ua tau zoo thiab kev txuag hluav taws xob.
Ntshiab CVD polycrystalline pob zeb diamond tseem kim dua - 4-inch heat spreaders pauv ntawm ib ncig ntawm 30,000 yuan ib wafer. Tus neeg tsav tsheb tus nqi tseem ceeb yog hluav taws xob: MPCVD cov cuab yeej ua haujlwm tsis tu ncua rau hnub lossis lub lis piam nyob rau hauv siab -plasma ib puag ncig kub, nrog lub zog suav txog 40-50% ntawm tag nrho cov nqi tsim khoom. Cov khoom siv depreciation yog qhov thib ob -cov khoom loj tshaj plaws.
Ib leeg - pob zeb diamond siv lead ua yog qhov kim tshaj plaws ntawm txhua qhov, nrog 2- ntiv tes substrates raug nqi ntau txhiab yuan thiab cov khoom seem ntxiv. High-cov noob zoo yog lawv tus kheej CVD- cov khoom loj hlob nrog lub sij hawm ua cov hmoov txhuas ntev thiab tsis muaj txiaj ntsig. Kev loj hlob tsuas yog ob peb micrometers ib teev, txhais tau tias ib lub wafer tuaj yeem siv sij hawm ntau lub lis piam. Ua ke nrog qhov tsis tshua muaj qhov loj-yields, cov yam ntxwv no ua rau txo tus nqi sai sai.
Layered Market Positioning
Peb cov ntaub ntawv tsis yog cov neeg sib tw ncaj qha; lawv tuav cov txheej txheem lag luam sib txawv.
AI GPUs & Data Centers - Pob zeb diamond-Copper tawg los ntawm
Advanced kua-txias AI neeg rau zaub mov racks - thawj lub lag luam uas pob zeb diamond- tooj liab composites tau ua tiav.
AI accelerators yog kev lag luam loj tshaj plaws rau pob zeb diamond thermal cov ntaub ntawv, thiab thawj qhov chaw uas pob zeb diamond - tooj liab composites tau ua tiav. NVIDIA's Vera Rubin architecture tau txais ib qho"pob zeb diamond{0}} tooj liab sib xyaw thermal interface + sov- dej ncaj qha txias"kev daws teeb meem, kos npe thawj zaug uas lub nti loj heev tau muab cov pob zeb diamond sib xyaw rau hauv tus qauv kho vajtse.
Cov qhab nia ntawm Zhengzhou Supercomputing Center qhia tias pob zeb diamond- tooj liab ua ke nrog cov kua txias ua kom zoo dua qhov ntsuas kub- hloov tau los ntawm80%, txo cov tub ntxhais kub los ntawm5 degree, thiab unlocks roughly10%kev ua tau zoo dua. Qhov kev xaiv dhau los ntawm CVD ntshiab los ntawm kev lag luam: GPU tuag ntau dua 700 mm², ua qhov loj - thaj tsam CVD txwv tsis pub kim, thaum cov chaw zov me nyuam muaj kev cuam tshuam rau tus nqi ib chav tsev ntawm kev suav.
Siab -Power Lasers & RF Devices - CVD Pob Zeb Diamond Lub Tsev Turf
Siab- lub zog laser diode mounted ntawm lub pob zeb diamond heat spreader - me me tuag, huab cua kub flux, thiab kev ua haujlwm loj.
High-lub zog lasers thiab RF lub zog amplifiers yog cov ntawv thov loj tshaj plaws rau cov ntshiab CVD pob zeb diamond tshav kub kis. Cov khoom siv no muaj qhov loj me me (millimeter scale), qhov kub siab heev (hauv zos tshaj 10 kW / cm²), thiab kev ua haujlwm loj.
Kev ntsuas ntawm Sanan Optoelectronics qhia tau hais tias pob zeb diamond tshav kub kis txo laser diode thermal kuj los ntawm81.1%piv rau ceramic substrates thiab dhau 1,000- teev kev laus. Tus nqi nce ntxiv ntawm ob peb mus rau kaum tawm duas las rau ib lub cuab yeej yog tsim nyog los ntawm qhov kev ua tau zoo ntawm qhov kev ua tau zoo.
Ib puag ncig huab cua - Ib leeg-Crystal, Irreplaceable
Satellite thermal tswj, 6G terahertz li, quantum computing chips, thiab siab -faiv fab GaN pab kiag li lawm tso ib leeg -pob zeb diamond siv lead ua yog tib txoj kev xaiv.
Ntawm IEEE IMS hauv 2026, ib pab pawg MIT tau qhia txog aGaN-hauv- pob zeb diamond heterogeneous integrationRF amplifier uas teev cov ntaub ntawv rau cov zis hluav taws xob hauv nws cov chav kawm, nrog cov hauv paus hniav hauv NASA thiab DARPA qhov chaw. Los ntawm embedding GaN chiplets rau hauv microcavities nyob rau hauv lub pob zeb diamond interposer thiab txias los ntawm ob sab saum toj thiab hauv qab, txoj kev tshem tawm cov kab mob parasitic capacitance teeb meem ntawm cov pa GaN - ntawm - pob zeb ua. Nws tseem yog ib qho kev cog lus ze rau -txoj kev ua kom txias txias, tab sis tam sim no hloov los ntawm chav kuaj mus rau kev tsim khoom.
Yav tom ntej Trajectories
Kev pom zoo ntawm kev lag luam: ze lub sij hawm composites; nruab nrab lub sij hawm polycrystalline tshav kub kis; ntev ib leeg - crystal breakthroughs.
Pob zeb diamond-Copper Composites nkag mus rau Volume Production
Tuam Tshoj tus paub tab HPHT pob zeb diamond micro- hmoov saw saw thiab hmoov- metallurgy infrastructure pab kom ceev nrooj ntau lawm - nce thiab nqi tseem ceeb - txo lub taub hau. Kev ua haujlwm kuj tseem sib xws nrog cov kab tsim khoom uas twb muaj lawm, txo qis kev tsim nyog rau kev teeb tsa. High-kawg AI servers thiab hluav taws xob- tsheb fais fab modules yuav tsum txav los ntawm cov qauv mus rau ntim khoom thaum lub qhov rais no, nrog rau tag nrho cov nqi sib xyaw kwv yees yuav poob mus rau 1.5–2 × tooj liab ntshiab nyob ib ncig ntawm 2028.
CVD Polycrystalline ncav cuag tus nqi -Kev Ua Haujlwm Tipping Point
Cov tsav tsheb muaj xws li 8-inch+ ntau lawm yields tshaj 85%, txuas ntxiv cov cuab yeej hauv zos, thiab kev loj hlob ntawm pob zeb diamond- ntawm -Si kev koom ua ke mus kom ze. Pob zeb diamond-on-Si loj hlob pob zeb diamond zaj duab xis ntawm silicon wafers, hloov pob zeb diamond-silicon heterogeneous bonding rau hauv silicon mature-silicon homogeneous bonding - tus choj uas tuaj yeem nqa CVD pob zeb diamond los ntawm lub chaw sim mus rau wafer{13}} qib kev tsim khoom. CVD polycrystalline pob zeb diamond yuav tsum nthuav dav los ntawm me me - hom laser thiab RF daim ntawv thov mus rau hauv lub zog loj dua -semiconductor thiab AI-chip scenarios.
Tib -Crystal Breakthroughs thiab ruaj khov Peb-Tier Market
Ib leeg-pob zeb diamond siv lead ua tuaj yeem ua tiav 4-inch substrate ntau lawm, thiab cov kev tsim kho qib siab xws li GaN-hauv- Pob zeb diamond thiab pob zeb diamond microchannels tuaj yeem paub tab. Peb txoj hauv kev yuav nyob twj ywm rau hauv cov qauv ruaj khov: pob zeb diamond- tooj liab sib xyaw hauv kev lag luam tseem ceeb, CVD polycrystalline nyob rau hauv siab - ntu kev ua tau zoo, thiab ib qho - pob zeb diamond crystal hauv kev ua haujlwm siab thiab kev tiv thaiv daim ntawv thov. Tsis muaj leej twg yuav tag nrho tshem tawm lwm tus.
Kaw Xav
Pob zeb diamond thermal tswj tsis yog ib zaj dab neeg hais txog cov khoom twg yog "zoo tshaj plaws." Nws yog ib zaj dab neeg hais txog kev lag luam engineering-offs nyob rau hauv ntau yam kev txwv.
Thermal conductivity, CTE txuam, nqi, machinability, thiab loj muaj tag nrho rub tawm ib leeg nyob rau hauv cov txheej txheem xaiv. Rau feem ntau cov ntawv thov kev lag luam, pob zeb diamond- tooj liab sib xyaw twb zoo txaus; rau kev ua tau zoo- cov khoom siv tseem ceeb, CVD polycrystalline pob zeb diamond yog qhov kev xaiv zoo tshaj plaws tam sim no; thiab ib leeg - pob zeb diamond siv lead ua sawv cev rau lub qab nthab - thiab yav tom ntej - ntawm daim teb no.
Thermal material evolution yeej tsis yog ib qho leap. Peb txoj kev nce mus rau qhov sib npaug, txhua qhov nkag mus rau nws tus kheej qib kev lag luam, yog daim duab tiag tiag rau xyoo tom ntej.
Tsis lees paub
Kab lus no tsuas yog siv rau kev kawm thiab cov ntaub ntawv xov xwm nkaus xwb thiab tsis yog cov lus qhia txog kev nqis peev, kev qhia txog kev yuav khoom, lossis cov lus pom zoo rau kev xaiv. Cov kev ua tau zoo, tus nqi lag luam, thiab cov ntaub ntawv tuam txhab hais txog ntawm no yog muab los ntawm cov chaw muaj nyob hauv pej xeem thiab tej zaum yuav txawv ntawm cov khoom lag luam, kev qhia tshwj xeeb, ntim khoom, thiab kev ua lag luam. Txhua qhov kev txiav txim siab raws li cov ntsiab lus no yog lub luag haujlwm ntawm tus nyeem ntawv nkaus xwb.
Xa kev nug