Small angle x-ray scattering (SAXS) and Q-space weighting filter for ×3 CD-extraction accuracy improvement

Autor: Yukihide Tsuji, Doyun Kim, Gwangsu Yoo, ByungHyun Hwang, Kwanghoon Kim, Donhwan Lee, Yoshinori Sasai, Shinwook Yi, Jaehoon Jeong, Dongchul Ihm, ChungSam Jun, Dae Sin Kim
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: AIP Advances, Vol 11, Iss 6, Pp 065129-065129-6 (2021)
Druh dokumentu: article
ISSN: 2158-3226
DOI: 10.1063/5.0037138
Popis: A small angle x-ray scattering simulator has been developed for metrology and inspection applications based on the first Born approximation considering non-ideal equipment-related factors. The simulator shows good reproducibility in various device structures and measurement environments, including slit-configurations and incident angles. In addition, a Q-space adaptive weighting method is proposed to enhance about 300% accuracy, especially on non-single repeated pitch structures such as VNAND with complex x-ray diffraction patterns.
Databáze: Directory of Open Access Journals