AI Article Synopsis
- The study examines how adsorbates affect the space-charge-limited current (SCLC) in ZnO nanowires by adjusting bias voltage, laser light, and ambient pressure.
- In dark and air conditions, surface adsorbates deplete free carriers, with electrons from the electrode being the main contributors to electron transport.
- When exposed to laser illumination, the current-voltage behavior changes from linear at low voltages to superlinear at higher voltages, indicating that SCLC arises from the desorption of surface molecules.
Article Abstract
We studied the influence of adsorbates on the space-charge-limited current (SCLC) in individual ZnO nanowires through varying the bias voltage, laser illumination, and ambient pressure. In dark and air conditions, the free carriers were depleted by the surface adsorbates, and electrons injected from the electrode to the nanowire dominated the electron transport properties. Under laser illumination, the current-voltage characteristic was linear at low voltage and superlinear at high voltage, and the SCLC regime occurred at high voltages due to the surface desorption. The time response of photoconductivity further revealed the dynamic process of elimination of SCLC by desorption of oxygen molecules at the ZnO nanowire surface.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1088/0957-4484/19/33/335204 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Conductance control in VO2 nanowires by surface doping with gold nanoparticles.
ACS Appl Mater Interfaces
September 2014
School of Electronic and Electrical Engineering and Sungkyunkwan Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 440-746, Republic of Korea.
The material properties of semiconductor nanowires are greatly affected by electrical, optical, and chemical processes occurring at their surfaces because of the very large surface-to-volume ratio. Precise control over doping as well as the surface charge properties has been demonstrated in thin films and nanowires for fundamental physics and application-oriented research. However, surface doping behavior is expected to differ markedly from bulk doping in conventional semiconductor materials.
View Article and Find Full Text PDFThe effect of adsorbates on the space-charge-limited current in single ZnO nanowires.
Nanotechnology
August 2008
State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, People's Republic of China.
Article Synopsis
- The study examines how adsorbates affect the space-charge-limited current (SCLC) in ZnO nanowires by adjusting bias voltage, laser light, and ambient pressure.
- In dark and air conditions, surface adsorbates deplete free carriers, with electrons from the electrode being the main contributors to electron transport.
- When exposed to laser illumination, the current-voltage behavior changes from linear at low voltages to superlinear at higher voltages, indicating that SCLC arises from the desorption of surface molecules.
The transport of hydrophobic ions across lipid bilayers.
Biochim Biophys Acta
October 1987
Institut für Physikalische und Theoretische Chemie, Technischen Universität München, Garching, F.R.G.
The three-capacitor model for hydrophobic ion adsorption in lipid membranes (Andersen, O.S., Feldberg, S.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!