This chapter gives an in-depth review of advanced deposition techniques focusing on hybrid deposition techniques, such as Ion Beam-Assisted Deposition (IBAD), High-rate Chemical Vapor Deposition (HCPVD), and Plasma-Enhanced Atomic Layer Deposition (PEALD). In the description of each technique, basic ideas will be considered along with important elements related to processing benefits and drawbacks to building an appropriate picture of the potential and constraints of each technique within modern material science. Hybrid deposition techniques incorporate the best features of several techniques of deposition with minimum disadvantages. The following methods allow depositing films of complicated composition with specific desired properties, acting in combinations of PVD and CVD processes. The hybrid methods permit much better control of the film properties and higher uniformity, and superior quality films can be obtained using more than one deposition source simultaneously. Multilayer coatings or sophisticated material features are especially beneficial for applications with the hybrid method. Such hybrid systems can be quite costly and complicated, while the fine-tuning of process parameters required for balancing the contributions coming from each approach needs strict control and calibration. PEALD is a variant of atomic layer deposition, wherein a plasma is employed to enhance the deposition process, offering a fine-grained molecular-level control of film thickness and composition. By contrast with the convention, ALD uses alternating pulses of precursor and co-reactant gases; the plasma activation in the PEALD allows for lower processing temperatures. This approach, in general, yields high-quality thin films with outstanding conformality and uniformity, even on complex geometries. Its advantages are the facts that PEALD can deposit films at low temperatures and that it is apt for high-precision applications. It does feature exceptional thickness control. Unfortunately, there is a few challenges that yet remain to be overcome, like sophisticated plasma equipment use, a limited deposition rate, and some plasma-induced contamination or damages. In the IBAD technique, besides the physical vapor deposition, an ion beam is used to blast the growing layer. The modification of microstructure and improvement in adhesion due to energetic interaction with the ion beam results in better film characteristics. IBAD technique allows for obtaining homogeneous coatings, high-density films, and stress control on complex geometries. While control of stress and modulation of film characteristics hold great potential, especially in applications involving high-performance coatings, its drawbacks are serious: expensive equipment, complicated operation, low deposition rates, and the possibility of ion-induced damage to substrate or film. Another factor is material-specific substrate heating, adding more challenges that must be overcome for effective utilization.

Advanced Deposition Techniques

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发表日期：

2025年

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Tahir Iqbal Awan,
Sumera Afsheen,
Sabah Kausar

摘要

This chapter gives an in-depth review of advanced deposition techniques focusing on hybrid deposition techniques, such as Ion Beam-Assisted Deposition (IBAD), High-rate Chemical Vapor Deposition (HCPVD), and Plasma-Enhanced Atomic Layer Deposition (PEALD). In the description of each technique, basic ideas will be considered along with important elements related to processing benefits and drawbacks to building an appropriate picture of the potential and constraints of each technique within modern material science. Hybrid deposition techniques incorporate the best features of several techniques of deposition with minimum disadvantages. The following methods allow depositing films of complicated composition with specific desired properties, acting in combinations of PVD and CVD processes. The hybrid methods permit much better control of the film properties and higher uniformity, and superior quality films can be obtained using more than one deposition source simultaneously. Multilayer coatings or sophisticated material features are especially beneficial for applications with the hybrid method. Such hybrid systems can be quite costly and complicated, while the fine-tuning of process parameters required for balancing the contributions coming from each approach needs strict control and calibration. PEALD is a variant of atomic layer deposition, wherein a plasma is employed to enhance the deposition process, offering a fine-grained molecular-level control of film thickness and composition. By contrast with the convention, ALD uses alternating pulses of precursor and co-reactant gases; the plasma activation in the PEALD allows for lower processing temperatures. This approach, in general, yields high-quality thin films with outstanding conformality and uniformity, even on complex geometries. Its advantages are the facts that PEALD can deposit films at low temperatures and that it is apt for high-precision applications. It does feature exceptional thickness control. Unfortunately, there is a few challenges that yet remain to be overcome, like sophisticated plasma equipment use, a limited deposition rate, and some plasma-induced contamination or damages. In the IBAD technique, besides the physical vapor deposition, an ion beam is used to blast the growing layer. The modification of microstructure and improvement in adhesion due to energetic interaction with the ion beam results in better film characteristics. IBAD technique allows for obtaining homogeneous coatings, high-density films, and stress control on complex geometries. While control of stress and modulation of film characteristics hold great potential, especially in applications involving high-performance coatings, its drawbacks are serious: expensive equipment, complicated operation, low deposition rates, and the possibility of ion-induced damage to substrate or film. Another factor is material-specific substrate heating, adding more challenges that must be overcome for effective utilization.