Tilt angle and dose rate monitoring of low energy ion implantation processes with photomodulated reflectance measurement : AM: Advanced Metrology

Autor: Zs. Zolnai, Janos Szivos, J. Byrnes, O. Sepsi, F. Ujhelyi, Leonard M. Rubin, a. Kun, Anita Pongracz, Edward D. Moore, Gy. Nadudvari
Rok vydání: 2020
Předmět:
Zdroj: 2020 31st Annual SEMI Advanced Semiconductor Manufacturing Conference (ASMC).
DOI: 10.1109/asmc49169.2020.9185326
Popis: Photo-modulated reflectance measurements provide a powerful, non-contact, non-destructive and inline-compatible method with low-cost operation for statistical process control of ion implantation steps on monitor and on product wafers. We present case studies describing how photo-modulated reflectivity measurements (PMR) can be used for ion implantation dose, fluence and tilt angle monitoring with excellent resolution, even for low-energy ion implantation processes. This is important because precise dopant and damage profile control is crucial in state-of-the art semiconductor processes utilizing shallow junctions and complex 3D doping profiles.
Databáze: OpenAIRE