Related Experiment Video
Updated: Apr 5, 2026
11:58
Synthesis and Functionalization of Nitrogen-doped Carbon Nanotube Cups with Gold Nanoparticles as Cork Stoppers
Published on: May 13, 2013
23.5K
Efficient nitrogen incorporation in ZnO nanowires
Jan E Stehr1, Weimin M Chen1, Nandanapalli Koteeswara Reddy2
1Linköping University, Department of Physics, Chemistry and Biology, Linköping, 581 83, Sweden.
Scientific Reports
|August 25, 2015
Summary
This study reveals unintentional nitrogen incorporation in zinc oxide nanowires (ZnO NWs), primarily at oxygen sites near the surface. This finding aids in controlling ZnO NW conductivity for applications.
Area of Science:
- Materials Science
- Nanotechnology
- Solid State Physics
Background:
- One-dimensional zinc oxide nanowires (ZnO NWs) are crucial for various applications.
- Controlling material properties requires understanding intrinsic defects and contaminants in ZnO NWs.
Purpose of the Study:
- To provide experimental evidence of unintentional nitrogen incorporation in ZnO NWs.
- To identify the location and characteristics of incorporated nitrogen within ZnO NWs.
Main Methods:
- Rapid thermal chemical vapor deposition (CVD) for growing ZnO NWs.
- Electron paramagnetic resonance (EPR) spectroscopy to detect and analyze defects.
Main Results:
- Experimental confirmation of unintentional nitrogen incorporation in ZnO NWs.
- Nitrogen atoms primarily occupy oxygen sites, forming NO centers.
- NO centers are located near the NW surface, indicated by reduced optical ionization energy.
Conclusions:
- Facilitated nitrogen incorporation in ZnO nanostructures can be beneficial for achieving p-type conductivity.
- Understanding this process is vital for preventing unintentional doping in n-type ZnO NWs.
Related Concept Videos
01:202° Amines to N-Nitrosamines: Reaction with NaNO2
5.8K
Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
5.8K
01:22Inorganic Nitrogen Assimilation
818
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
818
01:17Ziegler–Natta Chain-Growth Polymerization: Overview
4.3K
Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
4.3K