Abstract
The vapor cooling condensation system was utilized to deposit the homostructured n-ZnO:In/i-ZnO/p-ZnO:LiNO3 and heterostructured n-ZnO:In/i-Zn3Ta2O5/p-ZnO:LiNO3 on sapphire substrates. The zero bias dynamic resistance of the latter ones was improved to 2.43× 10-12Ω compared with 7.94× 10-11 Ω of the former ones. Using the photoelectrochemical (PEC) oxidation method to treat the heterostructured n-ZnO:In/i-Zn3Ta2O5/p-ZnO:LiNO3 ultraviolet photodetectors, the zero bias dynamic resistance was further improved to 6.02× 10-12 Ω. The sensing and the noise performances of the ultraviolet photodetectors were effectively improved by the Zn3Ta2O5 absorption layer and the PEC oxidation method.
| Original language | English |
|---|---|
| Article number | 7120909 |
| Pages (from-to) | 1817-1820 |
| Number of pages | 4 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 27 |
| Issue number | 17 |
| DOIs | |
| Publication status | Published - 2015 Sept 1 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering