دورية أكاديمية
An ultra-deep TSV technique enabled by the dual catalysis-based electroless plating of combined barrier and seed layers
| العنوان: | An ultra-deep TSV technique enabled by the dual catalysis-based electroless plating of combined barrier and seed layers |
|---|---|
| المؤلفون: | Yuwen Su, Yingtao Ding, Lei Xiao, Ziyue Zhang, Yangyang Yan, Zhifang Liu, Zhiming Chen, Huikai Xie |
| المصدر: | Microsystems & Nanoengineering, Vol 10, Iss 1, Pp 1-11 (2024) |
| بيانات النشر: | Nature Publishing Group, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Technology LCC:Engineering (General). Civil engineering (General) |
| مصطلحات موضوعية: | Technology, Engineering (General). Civil engineering (General), TA1-2040 |
| الوصف: | Abstract Silicon interposers embedded with ultra-deep through-silicon vias (TSVs) are in great demand for the heterogeneous integration and packaging of opto-electronic chiplets and microelectromechanical systems (MEMS) devices. Considering the cost-effective and reliable manufacturing of ultra-deep TSVs, the formation of continuous barrier and seed layers remains a crucial challenge to solve. Herein, we present a novel dual catalysis-based electroless plating (ELP) technique by tailoring polyimide (PI) liner surfaces to fabricate dense combined Ni barrier/seed layers in ultra-deep TSVs. In additional to the conventional acid catalysis procedure, a prior catalytic step in an alkaline environment is proposed to hydrolyze the PI surface into a polyamide acid (PAA) interfacial layer, resulting in additional catalysts and the formation of a dense Ni layer that can function as both a barrier layer and a seed layer, particularly at the bottom of the deep TSV. TSVs with depths larger than 500 μm and no voids are successfully fabricated in this study. The fabrication process involves low costs and temperatures. For a fabricated 530-μm-deep TSV with a diameter of 70 μm, the measured depletion capacitance and leakage current are approximately 1.3 pF and 1.7 pA at 20 V, respectively, indicating good electrical properties. The proposed fabrication strategy can provide a cost-effective and feasible solution to the challenge of manufacturing ultra-deep TSVs for modern 3D heterogeneous integration and packaging applications. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2055-7434 |
| Relation: | https://doaj.org/toc/2055-7434 |
| DOI: | 10.1038/s41378-024-00713-5 |
| URL الوصول: | https://doaj.org/article/e7d9d05ff5c44f888def8762f59c0fcc |
| رقم الأكسشن: | edsdoj.7d9d05ff5c44f888def8762f59c0fcc |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 20557434 |
|---|---|
| DOI: | 10.1038/s41378-024-00713-5 |