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Significant Hall-Petch effect in micro-nanocrystalline electroplated copper controlled by SPS concentration.

ABSTRACT: Electroplated Cu has been extensively applied in advanced electronic packaging, and its mechanical properties are critical for reliability. In this study, Cu foils fabricated through electroplating with various bis-(3-sulfopropyl) disulfide (SPS) concentrations are examined using tensile tests. The SPS concentration affects the grain size of the electroplated Cu foils, resulting in different mechanical properties. A significant Hall-Petch effect, [Formula: see text], is demonstrated for the electroplated Cu foils. The different concentrations of impurities identified through time-of-flight secondary ion mass spectrometry correspond to the different grain sizes, determining the transgranular and intergranular fracture during the tensile test. The results demonstrate that the SPS concentration controlling the microstructures of the electroplated Cu results in a Hall-Petch effect on the mechanical properties of the electroplated Cu foils.

SUBMITTER: Kao YJ

PROVIDER: S-EPMC9829657 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature

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Significant Hall-Petch effect in micro-nanocrystalline electroplated copper controlled by SPS concentration.

Kao Yu-Jyun YJ Li Yu-Ju YJ Shen Yu-An YA Chen Chih-Ming CM

Scientific reports 20230109 1

Electroplated Cu has been extensively applied in advanced electronic packaging, and its mechanical properties are critical for reliability. In this study, Cu foils fabricated through electroplating with various bis-(3-sulfopropyl) disulfide (SPS) concentrations are examined using tensile tests. The SPS concentration affects the grain size of the electroplated Cu foils, resulting in different mechanical properties. A significant Hall-Petch effect, [Formula: see text], is demonstrated for the elec ...[more]

PMID: 36624120

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