[Analysis Case] High-Sensitivity Analysis of Light Elements in Semiconductor Substrates Using SIMS
SIMS analysis allows for the evaluation of elements such as H, C, N, O, and F down to levels below 1 ppm.
It is possible to detect H, C, N, and O in semiconductor substrates at concentrations below 1 ppm (approximately 5E16 atoms/cm3) and F at concentrations below 1 ppb (approximately 5E13 atoms/cm3) using this method. Examples of measurements in actual FZ-Si (Figure 1) and the background levels of III-V semiconductors are presented (Table 2). In addition to III-V semiconductors, standard samples have been prepared for various materials such as metal films and insulating films, enabling highly sensitive quantitative analysis. This method is ideal for bulk analysis of various materials, including semiconductor substrates, and for evaluating the contamination of gas components during semiconductor processes.
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