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    • 6. 发明授权
    • Device formed by selective deposition of refractory metal of less than
300 Angstroms of thickness
    • 通过选择性沉积小于300埃厚度的难熔金属形成的器件
    • US6049131A
    • 2000-04-11
    • US887786
    • 1997-07-03
    • Stephen Bruce BrodskyRichard Anthony ContiSeshadri Subbanna
    • Stephen Bruce BrodskyRichard Anthony ContiSeshadri Subbanna
    • C23C16/04H01L21/28H01L21/285H01L21/336H01L21/60H01L21/8238H01L27/092H01L29/78
    • H01L21/76897C23C16/04H01L21/28061H01L21/28562H01L29/66515
    • A method and the device produced by the method of selective refractory metal growth/deposition on exposed silicon, but not on the field oxide is disclosed. The method includes preconditioning a wafer in a DHF dip followed by the steps of 1) selectively depositing a refractory metal on the exposed surfaces of the silicon substrate by reacting a refractory metal halide with the exposed surfaces of said silicon substrate; 2) limiting silicon substrate consumption by reacting the refractory metal halide with a silicon containing gas; and 3) further increasing the refractory metal thickness by reacting the refractory metal halide with hydrogen. Through an adequate pretreatment and selection of the parameters of 1) temperature; 2) pressure; 3) time; 4) flow and 5) flow ratio during each of the deposition steps, this invention adequately addresses the difficulties of uneven n+ versus p+ (source/drain) growth, deep consumption/encroachment by the refractory metal into silicon regions (e.g., worm holes), poor adhesion, uncontrolled selectivity and uneven morphology.
    • 公开了通过在暴露的硅上而不是场氧化物上的选择性难熔金属生长/沉积的方法制备的方法和装置。 该方法包括在DHF浸渍中预处理晶片,随后是以下步骤:1)通过使难熔金属卤化物与所述硅衬底的暴露表面反应来选择性地将难熔金属沉积在硅衬底的暴露表面上; 2)通过使难熔金属卤化物与含硅气体反应来限制硅衬底的消耗; 和3)通过使难熔金属卤化物与氢反应来进一步增加难熔金属厚度。 通过适当的预处理和选择参数1)温度; 2)压力; 3)时间; 4)流程和5)每个沉积步骤中的流量比,本发明充分地解决了不均匀的n +与p +(源/漏)生长,难熔金属深入/侵入硅区域(例如蠕虫孔)的困难, 粘附性差,不受控制的选择性和不均匀的形态。
    • 7. 发明授权
    • Apparatus for chemical vapor deposition of aluminum oxide
    • 氧化铝化学气相沉积装置
    • US5728222A
    • 1998-03-17
    • US541278
    • 1995-10-12
    • Steven George BarbeeRichard Anthony ContiAlexander KostenkoNarayana V. SarmaDonald Leslie WilsonJustin Wai-Chow WongSteven Paul Zuhoski
    • Steven George BarbeeRichard Anthony ContiAlexander KostenkoNarayana V. SarmaDonald Leslie WilsonJustin Wai-Chow WongSteven Paul Zuhoski
    • C23C16/40C23C16/46C23C16/52H01L21/205H01L21/31B05C11/00
    • C23C16/403C23C16/46C23C16/52
    • An apparatus in a chemical vapor deposition (CVD) system monitors the actual wafer/substrate temperature during the deposition process. The apparatus makes possible the production of high quality aluminum oxide films with real-time wafer/substrate control. An infrared (IR) temperature monitoring device is used to control the actual wafer temperature to the process temperature setpoint. This eliminates all atmospheric temperature probing. The need for test runs and monitor wafers as well as the resources required to perform the operations is eliminated and operating cost are reduced. High quality, uniform films of aluminum oxide can be deposited on a silicon substrates with no need for additional photolithographic steps to simulate conformality that are present in a sputtered (PVD) type application. The result is a reduction in required process steps with subsequent anticipated savings in equipment, cycle time, chemicals, reduce handling, and increased yield of devices on the substrate. The apparatus incorporates a heated source material, heated delivery lines, heated inert gas purge lines, a pressure differential mass flow controller, a control system with related valving, and a vacuum process chamber with walls that are temperature controlled as a complete source delivery system to accurately and repeatably provide source vapor for LPCVD deposition of aluminum oxide onto silicon substrates.
    • 化学气相沉积(CVD)系统中的装置在沉积过程中监测实际的晶片/衬底温度。 该设备使得可以生产具有实时晶片/衬底控制的高品质氧化铝膜。 使用红外(IR)温度监测装置将实际晶片温度控制到过程温度设定值。 这消除了所有的大气温度探测。 测试运行和监视晶圆以及执行操作所需的资源的需求被消除,运行成本降低。 可以在硅衬底上沉积高质量均匀的氧化铝膜,而不需要额外的光刻步骤来模拟存在于溅射(PVD)型应用中的共形性。 结果是所需的工艺步骤减少,随后预期节省设备,循环时间,化学品,减少处理和提高基材上装置的产量。 该装置包括加热的源材料,加热的输送管线,加热的惰性气体吹扫管线,压差质量流量控制器,具有相关阀门的控制系统和具有作为完整源输送系统温度控制的壁的真空处理室 准确并重复地提供源蒸气,用于LPCVD在硅衬底上沉积氧化铝。
    • 9. 发明授权
    • Method for selective deposition of refractory metal and device formed
thereby
    • 选择性沉积难熔金属的方法及由此形成的器件
    • US5807788A
    • 1998-09-15
    • US753128
    • 1996-11-20
    • Stephen Bruce BrodskyRichard Anthony ContiSeshadri Subbanna
    • Stephen Bruce BrodskyRichard Anthony ContiSeshadri Subbanna
    • C23C16/04H01L21/28H01L21/285H01L21/336H01L21/60H01L21/8238H01L27/092H01L29/78H01L21/44
    • H01L21/76897C23C16/04H01L21/28061H01L21/28562H01L29/66515
    • A method and the device produced by the method of selective refractory metal growth/deposition on exposed silicon, but not on the field oxide is disclosed. The method includes preconditioning a wafer in a DHF dip followed by the steps of 1) selectively depositing a refractory metal on the exposed surfaces of the silicon substrate by reacting a refractory metal halide with the exposed surfaces of said silicon substrate; 2) limiting silicon substrate consumption by reacting the refractory metal halide with a silicon containing gas; and 3) further increasing the refractory metal thickness by reacting the refractory metal halide with hydrogen. Through an adequate pretreatment and selection of the parameters of 1) temperature; 2) pressure; 3) time; 4) flow and 5) flow ratio during each of the deposition steps, this invention adequately addresses the difficulties of uneven n+ versus p+ (source/drain) growth, deep consumption/encroachment by the refractory metal into silicon regions (e.g., worm holes), poor adhesion, uncontrolled selectivity and uneven morphology.
    • 公开了通过在暴露的硅上而不是场氧化物上的选择性难熔金属生长/沉积的方法制备的方法和装置。 该方法包括在DHF浸渍中预处理晶片,随后是以下步骤:1)通过使难熔金属卤化物与所述硅衬底的暴露表面反应来选择性地将难熔金属沉积在硅衬底的暴露表面上; 2)通过使难熔金属卤化物与含硅气体反应来限制硅衬底的消耗; 和3)通过使难熔金属卤化物与氢反应来进一步增加难熔金属厚度。 通过适当的预处理和选择参数1)温度; 2)压力; 3)时间; 4)流程和5)每个沉积步骤中的流量比,本发明充分地解决了不均匀的n +与p +(源/漏)生长,难熔金属深入/侵入硅区域(例如蠕虫孔)的困难, 粘附性差,不受控制的选择性和不均匀的形态。