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Benchmarking of temperature measurement and control capability of commercially available rapid thermal processor (RTP) systems

机译:商用快速热处理器(RTP)系统的温度测量和控制能力基准测试

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Abstract: Rapid thermal processors (RTP) have been used in the semiconductor industry mainly for silicidation and implant anneal with limited success. SEMATECH is in the process of establishing a joint development project with supplier community to improve the situation. To understand the capability of the tools, a benchmark experiment was conducted using oxidation at 1100$DGR@C (target 90 angstroms), and Boron implant (5 E 15 @ 20 KeV) anneal at 900$DGR@C for 20 sec. Oxide thickness and sheet resistance were measured as an indirect capability of temperature measurement and control of the tools. The experiments in RTP were performed with `pyrometer closed-loop control' and `open-loop power control' where applicable. Both process data and temperature measurement data are analyzed and presented. The analysis of oxide thickness and sheet resistance (implant anneal) data shows that the closed-loop pyrometer control of temperature is not a viable technique to use in the manufacturing. The power control technique with the pyrometer in the open-loop (read only) demonstrates better process control and can be used until more viable technique is found. The reproducibility of open-loop power control technique for longer periods needs to be evaluated. This study demonstrates the urgent need to develop a real-time temperature measurement and control technique for the RTP tools to be accepted in the manufacturing world.!1
机译:摘要:快速热处理器(RTP)在半导体工业中主要用于硅化和注入退火,但效果有限。 SEMATECH正在与供应商社区建立联合开发项目,以改善这种状况。为了了解工具的功能,进行了基准实验,使用了1100 $ DGR @ C(目标90埃)的氧化,以及硼注入(5 E 15 @ 20 KeV)在900 $ DGR @ C的温度下退火20秒钟。测量氧化物厚度和薄层电阻是温度测量和工具控制的间接能力。 RTP中的实验在适用的情况下使用“高温计闭环控制”和“开环功率控制”进行。分析和显示了过程数据和温度测量数据。对氧化物厚度和薄层电阻(植入退火)数据的分析表明,温度的闭环高温计控制不是在制造中使用的可行技术。开环式高温计的功率控制技术(只读)显示了更好的过程控制,并且可以一直使用,直到找到更可行的技术为止。需要评估开环功率控制技术在更长时间内的可重复性。这项研究表明,迫切需要开发一种实时的温度测量和控制技术,以使RTP工具能够在制造世界中被接受!1

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