Surface temperature measurements using pyrometry during excimer laser pulsed etching of silicon in a Cl2 environment

作者: T.S. Baller , J.C.S. Kools , J. Dieleman

DOI: 10.1016/0169-4332(90)90159-W

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摘要: Abstract It appears from angular-resolved time-of-flight (TOF) studies, performed on the products desorbed during nanosecond pulsed excimer laser etching of silicon in a low pressure chlorine environment, that mean energy particles is dependent surface coverage (θ). Monte-Carlo simulations desorption process have shown all results TOF experiments can be explained by assuming maximum temperature Ts reached pulse depends θ. For fluence used, varies 1600 K at θ ≈ 0.01 up to 3500 full monolayer coverage. In this study we present time-resolved emission spectrometry irradiation, order elucidate role mechanism. The irradiated spot measured as function and interpreted thermal temperature. obtained measurements good agreement with derived experiments. influence adsorbed discussed light possible models.

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