White-light Mueller-matrix Fourier scatterometry for the characterization of nanostructures with large parameter spaces
White-light Mueller-matrix Fourier scatterometry for the characterization of nanostructures with large parameter spaces
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用于表征大参数空间纳米结构的白光穆勒矩阵傅立叶散射测量
DOI:
10.1117/12.2551276
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
W. Osten
中科院分区:
文献类型:
--
作者:
M. L. Gödecke;K. Frenner;W. Osten
With the ever increasing demand for higher transistor density and improved functionality, the nanostructures on modern semiconductor chips become more and more complex and their modeling requires a multitude of parameters. As a result, the performance of scatterometry as state-of-the-art optical inspection tool is limited by insufficient sensitivities towards certain parameters and high cross-correlations between them. In order to improve the model-based reconstruction, it is essential to generate as many uncorrelated datasets as possible. In this paper, we propose to combine conventional Fourier scatterometry with Mueller polarimetry and white-light interferometry to measure both angle- and wavelength-resolved Mueller matrices. This approach takes advantage simultaneously of the most relevant information channels of the light field: intensity, wavelength, phase, propagation angle, and polarization. We validate the performance improvement in case of multi-parameter problems by means of a comprehensive simulation study. In general, both the measurement uncertainties and the cross-correlations are reduced in comparison to other scatterometric configurations. Furthermore, our approach facilitatesthe reconstruction of target asymmetries, such as asymmetric sidewall angles, or the analysis of isolated line gratings at low technology nodes. Aiming at an experimental validation as well, we finally show results from first proof-of-principle measurements performed during the ongoing setup implementation.
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DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
Roy Sarathi;N. Kumar;Silvania F. Pereira;H. Urbach
通讯作者:
H. Urbach
DOI:
--
发表时间:
2007
期刊:
SPIE Advanced Lithography
影响因子:
--
作者:
A. de Martino;S. Ben Hatit;M. Foldyna
通讯作者:
M. Foldyna
DOI:
10.1063/1.3280160
发表时间:
2010-02
期刊:
The Review of scientific instruments
影响因子:
--
作者:
M. Wurm;F. Pilarski;B. Bodermann
通讯作者:
M. Wurm;F. Pilarski;B. Bodermann
影响因子:
19.4
作者:
Paz, Valeriano Ferreras;Peterhaensel, Sandy;Osten, Wolfgang
通讯作者:
Osten, Wolfgang
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
W. Osten;V. F. Paz;K. Frenner;T. Schuster;H. Bloess
通讯作者:
H. Bloess