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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Van Driel, Willem
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024Training Convolutional Neural Networks with Confocal Scanning Acoustic Microscopy Imaging for Power QFN Package Delamination Classification
- 2023Heterogeneous Integration of Diamond Heat Spreaders for Power Electronics Applicationcitations
- 2022Interphase effect on the effective moisture diffusion in epoxy–SiO2 compositescitations
- 2021Facile synthesis of ag nanowire/tio2 and ag nanowire/tio2/go nanocomposites for photocatalytic degradation of rhodamine bcitations
- 2021Exploring water and ion transport process at silicone/copper interfaces using in-situ electrochemical and Kelvin probe approachescitations
- 2018Solid State Lighting Reliability Part 2
- 2016Creep fatigue models of solder jointscitations
- 2015An overview of scanning acoustic microscope, a reliable method for non-destructive failure analysis of microelectronic componentscitations
- 2010Designing for reliability using a new Wafer Level Package structure
- 2009Virtual Prototyping for PPM-level Failures in Microelectronic Packages
- 2009Reliability of Wafer Level Thin Film MEMS Packages during Wafer Backgrinding
- 2008Effect of aging of packaging materials on die surface cracking of a SiP carrier
- 2008Die Fracture Probability Prediction and Design Guidelines for Laminate-Based Over-Molded Packages
- 2007Modeling of the mechanical stiffness of the GaP/GaAs nanowires with point defects/stacking faults
- 2007Efficient damage sensitivity analysis of advanced Cu/low-k bond pad structures by means of the area release energy criterion
- 2007Correlation between chemistry of polymer building blocks and microelectronics reliability
- 2007Measuring the through-plane elastic modulus of thin polymer films in situ
- 2007Characterization of moisture properties of polymers for IC packaging
- 2006Mixed Mode Bending Test for Interfacial Adhesion in Semiconductor Applications
- 2005The precision of large radio continuum source catalogues. An application of the SPECFIND toolcitations
Places of action
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article
Exploring water and ion transport process at silicone/copper interfaces using in-situ electrochemical and Kelvin probe approaches
Abstract
In general, packaging materials which encapsulate light emitting diodes (LEDs) and microelectronic devices offer barrier protection against several environmental hazards such as water and ionic contaminants. However, these encapsulants may provide pathways for water and ionic contaminants to reach the metal/polymer interfaces and provoke local corrosion of electronics, which is a major reliability concern for polymer encapsulated LEDs and microelectronics. As the water and corrosive constituents play a crucial role in their reliability, water uptake kinetics, interfacial ion transport and delamination behaviour of silicone coated copper model system, mimicking a typical microelectronics packaging system, is explored in the present work. Electrochemical impedance spectroscopy (EIS) integrated with attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy studies revealed that water diffusion inside the silicone network is Fickian in nature and the evolution of the observed time constants are related to the diffusion and interfacial reactions. A decrease of impedance magnitude with time was observed in EIS measurements concurrently with water absorption bands shifting towards lower wavenumber in ATR-FTIR measurements, implying the growth of strong hydrogen bonding between water molecules and the silicone network. The estimated diffusion constant of water using the capacitance method was in the order of 7 × 10-12 m2 s−1 and the water absorption volume fraction was in the range of 0% to 0.30%. Scanning Kelvin probe studies elucidated the ion transport process occurring at the silicone/copper interface in a humid atmosphere. The interfacial ion transport process is controlled by the interfacial electrochemical reactions at the cathodic delamination front and the estimated average delamination rate is 0.43 mm h-1/2. This work demonstrates that exploring ion and water transport in the silicone coating and along the silicone/copper interface is of pivotal importance as part of a detailed reliability assessment of the polymer encapsulated LEDs and microelectronics.