The comparison of transient photocurrent spectroscopy measurements of Pulsed Electron Deposited ZnO thin film for air and vacuum ambient conditions
| Autor: | Mehmet Özdoğan, Serap Yigen, Cem Çelebi, G. Utlu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Photocurrent Materials science business.industry Ultra-high vacuum Metals and Alloys 02 engineering and technology Surfaces and Interfaces Electron 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Adsorption Desorption 0103 physical sciences Materials Chemistry Optoelectronics Deposition (phase transition) Thin film 0210 nano-technology business Spectroscopy |
| Zdroj: | Thin Solid Films. 680:48-54 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2019.04.030 |
| Popis: | Photoconduction mechanism of ZnO thin films that produced by Pulsed Electron Deposition method is systematically investigated by taking Transient Photocurrent Spectroscopy measurements for different atmospheres including high vacuum and air environments. Response and recovery rates of photocurrent in the air are faster than the rates in high vacuum condition. The results in the presented work clearly indicate that the photoconduction of ZnO thin films with high surface-area-to-volume ratio are surface-related and mostly governed by adsorption/desorption of oxygen and water molecules in the atmosphere. Therefore, the high surface interaction tendency of ZnO surface with the atmosphere inevitably leads to charge transfer from surface to adsorbates and/or vice versa. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect