Self-assembled growth and optical emission of silver-capped silicon nanowires
- 29 April 2004
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 84 (19) , 3867-3869
- https://doi.org/10.1063/1.1753063
Abstract
Structured silver-capped siliconnanowires were fabricated via electroless metaldeposition on a silicon wafer in an ionic silver HF solution through selective chemical etching. Their formation mechanism was explained on the basis of self-assembled localized microscopic electrochemical cell model. The metal–semiconductor composite nanostructure was found to have a strong ultraviolet-emitting property with an emission peak position at 330 nm. The intensity of the peak nonmonotonously varies with annealing temperature and time, but its position remains unchanged. Emission and excitation spectral analyses suggest that the ultraviolet emission is closely related to the existence of silvervacancy defects in silver nanocaps formed during sample fabrication. A specific vacancy density is required to produce the strong ultraviolet emission.Keywords
This publication has 19 references indexed in Scilit:
- Optical Emission from Excess Si Defect Centers in Si NanostructuresPhysical Review Letters, 2003
- Dendrite‐Assisted Growth of Silicon Nanowires in Electroless Metal DepositionAdvanced Functional Materials, 2003
- Nanowire Nanosensors for Highly Sensitive and Selective Detection of Biological and Chemical SpeciesScience, 2001
- Functional Nanoscale Electronic Devices Assembled Using Silicon Nanowire Building BlocksScience, 2001
- Control of Thickness and Orientation of Solution-Grown Silicon NanowiresScience, 2000
- Chemical vapor deposition of Si nanowires nucleated by TiSi2 islands on SiApplied Physics Letters, 2000
- Charge Exchange Processes during the Open-Circuit Deposition of Nickel on Silicon from Fluoride SolutionsJournal of the Electrochemical Society, 2000
- A Laser Ablation Method for the Synthesis of Crystalline Semiconductor NanowiresScience, 1998
- Chemical structure and the mixed mobile ion effect in silver-for-sodium ion exchange in silicate glassesJournal of Non-Crystalline Solids, 1996
- Selective Electroless Metal Deposition for Via Hole Filling in VLSI Multilevel Interconnection StructuresJournal of the Electrochemical Society, 1989