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Novel etch-diffusion process for fabricating high aspect ratio Si microstructures

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

A novel etch-diffusion process is developed for fabricating high aspect ratio Si structures for microsensors. This is accomplished by first dry etching narrow gap Si microstructures using an electron cyclotron resonance (ECR) source, followed by a shallow B diffusion to fully convert the etched microstructures to p++ layer. Microstructures up to 40 μm deep with 2 μm wide gap were etched with a Cl2 plasma generated using the ECR source. Vertical profile and smooth morphology were obtained at low pressure. This is the first demonstration of released high aspect ratio Si microstructures with thicknesses ≥20 μm.
Original languageEnglish
Title of host publicationInternational Conference on Solid-State Sensors and Actuators, and Eurosensors IX, Proceedings
PublisherIEEE
Pages560-563
Volume1
Publication statusPublished - 1995
Externally publishedYes
EventProceedings of the 1995 8th International Conference on Solid-State Sensors and Actuators and Eurosensors IX. Part 1 (of 2) - Stockholm, Sweden
Duration: 25 Jun 199529 Jun 1995

Publication series

Name
Volume1

Conference

ConferenceProceedings of the 1995 8th International Conference on Solid-State Sensors and Actuators and Eurosensors IX. Part 1 (of 2)
CityStockholm, Sweden
Period25/06/9529/06/95

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