Integrated 3D-Capacitors for Implantable Bradycardia Pacemakers: Dielectric Integrity and Local Electrical Characterizations using AFM

Rosine Coq Germanicus, Florent Lallemand, Nicolas Normand, Catherine Bunel, Ulrike Lüders

2021

Abstract

A silicon 3D-array capacitor dedicated for an implantable bradycardia pacemaker is presented. The integrated 3D-shape of the capacitors are designed by fabricating a high ratio micropore array inside the silicon wafer. This special shape enhances the developed surface of the dielectric layer, leading to high capacitance densities, critical for the application in such a biomedical system. The process control, based on nano-characterizations performed on an Atomic Force Microscopy, is deployed for the three major critical fabrication steps: the dielectric conformity, the in-situ phosphorus-doped polycrystalline silicon pore filling and the uniformity of the doping of the electrodes of the SIS capacitor. After the chemical revelation of the deposited dielectric layer, the conformity of the layer and the effectiveness of the filling are proven by AFM topographies. Moreover, the delineation of the electrode doping is examined with the electrical Scanning Capacitance Mode by recording the spatial extension and the carrier concentration. Macroscopic characterisations of the dielectric properties show the stability of the 3D-patterning silicon capacitors concerning the applied voltage and the temperature. Finally, a high integration solution, where the 3D-capacitor are embedded and sandwiched into a multilayer printed circuit board, is exposed by employing thin epoxy laminates prepreg sheets.

Paper Citation

in Harvard Style

Germanicus R., Lallemand F., Normand N., Bunel C. and Lüders U. (2021). Integrated 3D-Capacitors for Implantable Bradycardia Pacemakers: Dielectric Integrity and Local Electrical Characterizations using AFM. In Proceedings of the 14th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2021) - Volume 1: BIODEVICES; ISBN 978-989-758-490-9, SciTePress, pages 49-57. DOI: 10.5220/0010254300002865

in Bibtex Style

@conference{biodevices21,
author={Rosine Coq Germanicus and Florent Lallemand and Nicolas Normand and Catherine Bunel and Ulrike Lüders},
title={Integrated 3D-Capacitors for Implantable Bradycardia Pacemakers: Dielectric Integrity and Local Electrical Characterizations using AFM},
booktitle={Proceedings of the 14th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2021) - Volume 1: BIODEVICES},
year={2021},
pages={49-57},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010254300002865},
isbn={978-989-758-490-9},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 14th International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC 2021) - Volume 1: BIODEVICES
TI - Integrated 3D-Capacitors for Implantable Bradycardia Pacemakers: Dielectric Integrity and Local Electrical Characterizations using AFM
SN - 978-989-758-490-9
AU - Germanicus R.
AU - Lallemand F.
AU - Normand N.
AU - Bunel C.
AU - Lüders U.
PY - 2021
SP - 49
EP - 57
DO - 10.5220/0010254300002865
PB - SciTePress