Unveiling 3D Morphology of Multiscale Micro-Nanosilver Sintering for Advanced Electronics Manufacturing by Ptychographic X-ray Nanotomography

Lin, Yu-Chung; Liu, Xiaoyang; Chou, Kang Wei; Tsai, Esther H.  R.; Zhao, Chonghang; Holler, Mirko; Diaz, Ana; Petrash, Stanislas; Chen-Wiegart, Yu-chen Karen

doi:10.1002/adem.201901250

Title: Unveiling 3D Morphology of Multiscale Micro-Nanosilver Sintering for Advanced Electronics Manufacturing by Ptychographic X-ray Nanotomography

Journal Article · 06 February 2020 · Advanced Engineering Materials

DOI: https://doi.org/10.1002/adem.201901250 · OSTI ID:1607713

Lin, Yu-Chung ^[1];

^[1]; Chou, Kang Wei ^[2];

^[3]; Zhao, Chonghang ^[1]; Holler, Mirko ^[4]; Diaz, Ana ^[4]; Petrash, Stanislas ^[2]; Chen-Wiegart, Yu-chen Karen ^[5]

Stony Brook Univ., NY (United States)
Henkel Corporation, Bridgewater, NJ (United States)
Paul Scherrer Inst. (PSI), Villigen (Switzerland). Swiss Light Source; Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Paul Scherrer Inst. (PSI), Villigen (Switzerland). Swiss Light Source
Stony Brook Univ., NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)

The sintering processing–structure–property relationship of a multiscale silver materials is investigated: microparticles with nanofeatures, particularly on their three-dimensional (3D) morphology. The target application is to replace conventional lead-based solders in advanced electronic manufacturing. Unlike lead-based solders, silver powders are suited to satisfy increasingly demanding mechanical, electrical, and thermal requirements, meanwhile being free of health effect. Sintering the material at a low temperature and without applied pressure are desirable conditions, which results in a preferred use of silver nanoparticles, as nanofeatures have higher driving force to sinter with the decrease in particle size. However, nanosized powders present potential health/environmental effects. To address the trade-off between the benefits and shortcomings of nano-versus microparticles, this work studies a novel multiscale silver paste, namely micron-sized powders with nanosized features. To get quantitative 3D visualization of micro- and nanoscale features, ptychographic X-ray computed nanotomography is applied. The correlations between conditions (thermal aging, pressure, and substrate metallization), mechanical properties, and morphological parameters are established. Finally, using novel 3D X-ray nanoimaging technique, it is demonstrated that one can design multiscale materials while balancing complex demands required in advanced electronics manufacturing and research directions in materials design and characterization.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Swiss National Science Foundation (SNSF)

Grant/Contract Number:: SC0012704; 200021_152554; 200020_169623

OSTI ID:: 1607713

Alternate ID(s):: OSTI ID: 1600580

Report Number(s):: BNL-213754-2020-JAAM

Journal Information:: Advanced Engineering Materials, Vol. 22, Issue 4; ISSN 1438-1656

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 10 works

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