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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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Brincker, Mads
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2018Thermo-mechanically induced texture evolution and micro-structural change of aluminum metallizationcitations
- 2018Comparative study of Al metallization degradation in power diodes under passive and active thermal cyclingcitations
- 2018Low temperature transient liquid phase bonded Cu-Sn-Mo and Cu-Sn-Ag-Mo interconnectscitations
- 2017Strength and reliability of low temperature transient liquid phase bonded Cu-Sn-Cu interconnectscitations
- 2016Mechanisms of metallization degradation in high power diodescitations
- 2015Effects of thermal cycling on aluminum metallization of power diodescitations
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article
Effects of thermal cycling on aluminum metallization of power diodes
Abstract
Reconstruction of aluminum metallization on top of power electronic chips is a well-known wear out phenomenon under power cycling conditions. However, the origins of reconstruction are still under discussion. In the current study, a method for carrying out passive thermal cycling of power diodes in a controlled environment is developed, thus eliminating possible contribution to degradation from electric current and humidity. The focus is centered on the structural changes in the top Al metallization layer of the power diodes, correlated with the<br/>change of sheet resistance. Since the atmosphere is controlled and the device is not subjected to a current load the observed degradation of metallization and corresponding increase of resistance is purely induced by thermo-mechanical stress. A correlation between number of cycles, micro-structural evolution, and sheet resistance is found and conclusions on the dominant role of thermo-mechanical stresses are achieved. Additionally, proposals are made on how the current thermal test setup can be further developed to study the role of corrosion.