Sana, P. and Verma, S. and Praveen, K. C. and Malik, M. M. (2013) In-situ I-V measurements of ZnS:TiO2/p-Si quantum dot heterojunction photodiode under 120 MeV Au9+ ion irradiation. IEEE Journal of Quantum Electronics, 49 (9). pp. 770-776.
Full text not available from this repository. (Request a copy)Abstract
The 120 MeV Au 9+ ion induced modifications in a ZnS:TiO 2 /p-Si quantum dot (QD) heterojunction has been studied by In-Situ current-voltage (I-V) measurements. This paper shows that the process of ion irradiation is a novel technique in modifying the electronic properties of QDs based semiconductor heterojunctions. After Au 9+ ion irradiation, there is an increase in ideality factor for ZnS:TiO 2 /p-Si QDs heterojunction at lower fluences and further at higher fluences the ideality factor decreases. In addition, the other parameters like leakage current, series resistance, and reverse saturation current are also affected under the SHI irradiation. In pristine samples, the dependence of the currents under the light illumination shows high photo responsivity. The observed responsivity is 2.7×10 10 A/W for ultraviolet light (wavelength 376 nm) at reverse bias voltage 1.5 V. The increase in responsivity to 4.9×10 10 A/W is observed after irradiation up to fluence of 3×10 13 ions/cm 2.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Irradiation, Photoluminescence, Heterojunctions, Swift heavy ions, Silicon, Current-voltage measurements, Electric resistance, Electronic properties, Heterojunction photodiodes, Light illumination, Reverse bias voltage, Reverse-saturation currents, Semiconductor heterojunctions, Semiconductor quantum dots, Series resistances, Titanium dioxide, Zinc sulfide |
| Subjects: | D Physical Science > Physics |
| Divisions: | Department of > Physics |
| Depositing User: | Arshiya Kousar Library Assistant |
| Date Deposited: | 19 Nov 2019 05:52 |
| Last Modified: | 19 Nov 2019 05:52 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/9573 |
Actions (login required)
 |
View Item |
