VeTek 반도체는 반도체 산업을 위한 탄탈륨 카바이드 코팅 재료의 선도적인 제조업체입니다. 당사의 주요 제품으로는 CVD 탄탈륨 카바이드 코팅 부품, SiC 결정 성장 또는 반도체 에피택시 공정용 소결 TaC 코팅 부품이 있습니다. ISO9001을 통과한 VeTek Semiconductor는 품질에 대한 통제력이 뛰어납니다. VeTek Semiconductor는 반복적인 기술의 지속적인 연구 및 개발을 통해 탄탈륨 카바이드 코팅 산업의 혁신자가 되기 위해 최선을 다하고 있습니다.
주요 제품은탄탈륨 카바이드 코팅 디펙터 링, TaC 코팅 전환 링, TaC 코팅 반달 부품, 탄탈륨 카바이드 코팅 행성 회전 디스크(Aixtron G10), TaC 코팅 도가니; TaC 코팅 링; TaC 코팅된 다공성 흑연; 탄탈륨 카바이드 코팅 흑연 서셉터; TaC 코팅 가이드 링; TaC 탄탈륨 카바이드 코팅 플레이트; TaC 코팅 웨이퍼 서셉터; TaC 코팅링; TaC 코팅 흑연 커버; TaC 코팅 청크등, 순도는 5ppm 미만이며 고객 요구 사항을 충족할 수 있습니다.
TaC 코팅 흑연은 독점 화학 기상 증착(CVD) 공정을 통해 고순도 흑연 기판의 표면을 탄탈륨 탄화물의 미세한 층으로 코팅하여 생성됩니다. 장점은 아래 그림에 나와 있습니다.
탄탈륨 카바이드(TaC) 코팅은 최대 3880°C의 높은 융점, 우수한 기계적 강도, 경도 및 열 충격에 대한 저항성으로 인해 주목을 받아 더 높은 온도 요구 사항이 있는 화합물 반도체 에피택시 공정에 대한 매력적인 대안이 되었습니다. Aixtron MOCVD 시스템 및 LPE SiC 에피택시 공정과 같은 PVT 방식의 SiC 결정 성장 공정에도 폭넓게 적용됩니다.
●온도 안정성
●초고순도
●H2, NH3, SiH4, Si에 대한 내성
●열 재고에 대한 저항
●흑연과의 강한 접착력
●컨포멀 코팅 적용 범위
● 직경 최대 750mm(중국 유일의 제조업체가 이 크기에 도달함)
● 유도가열 서셉터
● 저항 발열체
●분사노즐
● 열 차폐
TaC 코팅의 물리적 특성 | |
밀도 | 14.3(g/cm3) |
특정 방사율 | 0.3 |
열팽창계수 | 6.3 10-6/케이 |
경도(홍콩) | 2000홍콩 |
저항 | 1×10-5옴*cm |
열 안정성 | <2500℃ |
흑연 크기 변화 | -10~-20um |
코팅 두께 | ≥20um 일반 값(35um±10um) |
요소 | 원자퍼센트 | |||
백금. 1 | 백금. 2 | 백금. 3 | 평균 | |
씨케이 | 52.10 | 57.41 | 52.37 | 53.96 |
그들을 | 47.90 | 42.59 | 47.63 | 46.04 |
Thin film preparation processes can be divided into two categories according to their film forming methods: physical vapor deposition (PVD) and chemical vapor deposition (CVD), of which CVD process equipment accounts for a higher proportion. Atomic layer deposition (ALD) is one of the chemical vapor deposition (CVD).
Atomic layer deposition technology (Atomic Layer Deposition, referred to as ALD) is a vacuum coating process that forms a thin film on the surface of a substrate layer by layer in the form of a single atomic layer. ALD technology is currently being widely adopted by the semiconductor industry.
Atomic layer deposition process:
Atomic layer deposition usually includes a cycle of 4 steps, which is repeated as many times as needed to achieve the required deposition thickness. The following is an example of ALD of Al₂O₃, using precursor substances such as Al(CH₃) (TMA) and O₂.
Step 1) Add TMA precursor vapor to the substrate, TMA will adsorb on the substrate surface and react with it. By selecting appropriate precursor substances and parameters, the reaction will be self-limiting.
Step 2) Remove all residual precursors and reaction products.
Step 3) Low-damage remote plasma irradiation of the surface with reactive oxygen radicals oxidizes the surface and removes surface ligands, a reaction that is also self-limiting due to the limited number of surface ligands.
Step 4) Reaction products are removed from the chamber.
Only step 3 differs between thermal and plasma processes, with H₂O being used in thermal processes and O₂ plasma being used in plasma processes. Since the ALD process deposits (sub)-inch-thick films per cycle, the deposition process can be controlled at the atomic scale.
Highlights of Atomic Layer Deposition (ALD):
1) Grow high-quality thin films with extreme thickness accuracy, and only grow a single atomic layer at a time
2) Wafer thickness can reach 200 mm, with typical uniformity <±2%
3) Excellent step coverage even in high aspect ratio structures
4) Highly fitted coverage
5) Low pinhole and particle levels
6) Low damage and low temperature process
7) Reduce nucleation delay
8) Applicable to a variety of materials and processes
Compared with traditional chemical vapor deposition (CVD) and physical vapor deposition (PVD), the advantages of ALD are excellent three-dimensional conformality, large-area film uniformity, and precise thickness control, etc. It is suitable for growing ultra-thin films on complex surface shapes and high aspect ratio structures. Therefore, it is widely applicable to substrates of different shapes and does not require control of reactant flow uniformity.
Comparison of the advantages and disadvantages of PVD technology, CVD technology and ALD technology:
PVD technology |
CVD technology |
ALD technology |
Faster deposition rate |
Average deposition rate |
Slower deposition rate |
Thicker film thickness, poor control of nano-level film thickness precision |
Medium film thickness (depends on the number of reaction cycles) |
Atomic-level film thickness |
The coating has a single directionality |
The coating has a single directionality |
Good uniformity of large-area film thickness |
Poor thickness uniformity |
Average step coverage |
Best step coverage |
Poor step coverage |
\ |
Dense film without pinholes |
Advantages of ALD technology compared to CVD technology (Source: ASM)
Vetek Semiconductor is a professional ALD Susceptor products supplier in China. Our ALD Susceptor, SiC coating ALD susceptor and ALD Planetary Susceptor are widely used in key components of semiconductor manufacturing equipment. Vetek Semiconductor is committed to providing advanced and customizable ALD Susceptor products and technical solutions of various specifications for the semiconductor industry. We sincerely look forward to becoming your supplier in China.