Open Access
20 July 2022 Localized and cascading secondary electron generation as causes of stochastic defects in extreme ultraviolet projection lithography (Erratum)
Author Affiliations +
Abstract

The erratum corrects an error in the parameter units in the original article.

This article [H. Fukuda, J. Micro/Nanolith. MEMS MOEMS 18(1), 013503 (2019) doi: https://doi.org/10.1117/1.JMM.18.1.013503] was originally published online on 8 February 2019 with incorrect parameter units.

The parameter units were reported as “meV” rather than “eV” in the caption of Fig. 3, Sec. 4, and the legends in Fig. 5(c) as follows.

Original sentence:

“Fig. 3 Probability functions for SE strings. (a) pdfSEstring (length; endpoint) versus end point (solid lines) and start point (dashed lines), and (b) typical profiles of pSEstring (xi |edge = xj; photon = r), both for SE energy = 10 meV, inter-SE distance = 2 nm.”

Corrected sentence:

“Fig. 3 Probability functions for SE strings. (a) pdfSEstring (length; endpoint) versus end point (solid lines) and start point (dashed lines), and (b) typical profiles of pSEstring (xi |edge = xj; photon = r), both for SE energy = 10 eV, inter-SE distance = 2 nm.”

Original sentence:

“SE energy per inelastic scattering (10 to 20 meV or PE energy0.5), elementary reaction site density (10/nm3), voxel size (1 nm), and the number of solubility flipped voxels through film thickness ncSFV required for generating main pattern (10) and film defect (3) are set constant during the optimization.”

Corrected sentence:

“SE energy per inelastic scattering (10 to 20 eV or PE energy0.5), elementary reaction site density (10/nm3), voxel size (1 nm), and the number of solubility flipped voxels through film thickness ncSFV required for generating main pattern (10) and film defect (3) are set constant during the optimization.”

Original sentence:

“For mechanism B defect, optimization results with changing the assumption of Ese (from 10 meV to square root of photoelectron energy) show a reduction in the defect probabilities [Fig. 5(c), red squares].”

Corrected sentence:

“For mechanism B defect, optimization results with changing the assumption of Ese (from 10 eV to square root of photoelectron energy) show a reduction in the defect probabilities [Fig. 5(c), red squares].”

Original Fig. 5:

JM3_21_3_039801_f001.png

Corrected Fig. 5:

JM3_21_3_039801_f002.png

The results were obtained using the parameters in the correct units, and these errors did not impact the results reported in the article. The corrected paper was republished on 13 July 2022.

© 2022 Society of Photo-Optical Instrumentation Engineers (SPIE)
Hiroshi Fukuda "Localized and cascading secondary electron generation as causes of stochastic defects in extreme ultraviolet projection lithography (Erratum)," Journal of Micro/Nanopatterning, Materials, and Metrology 21(3), 039801 (20 July 2022). https://doi.org/10.1117/1.JMM.21.3.039801
Published: 20 July 2022
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KEYWORDS
Electron beam lithography

Extreme ultraviolet

Projection lithography

Stochastic processes

Scattering

Solids

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