Abstract
The production of detached porous silicon (PS) layers for layer transfer (LT) has been investigated. Electrochemical anodisation (ECA) studies of monocrystalline silicon (mono-Si) wafers in a hydrofluoric acid/ethanol/ deionised (DI) water solution showed that porosity can be controlled by controlling current density during ECA. Double layered PS layers consisting of low (26-5%) and high (86-3%) porosity layers were formed by ECA at 1-5mAcm -2 and 100 mA cm-2 for etching times of 10 min and 10 sec respectively. These PS layers are considered viable for LT substrate technology.
| Original language | English |
|---|---|
| Pages (from-to) | 603-605 |
| Number of pages | 3 |
| Journal | Surface Engineering |
| Volume | 25 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2009 Nov |
Keywords
- Anodisation
- Electrochemical etching
- Layer transfer
- Porous silicon
ASJC Scopus subject areas
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry