Minggang SHI, Haichuan MU, Min QIAN. Fabrication and Photoresponse Study of the Photodetector Based on Novel NiO-Bi2Te3 Heterostructure[J]. Acta Photonica Sinica, 2022, 51(2): 0251214
- Acta Photonica Sinica
- Vol. 51, Issue 2, 0251214 (2022)
Fig. 1. Schematic diagram of the photodetector based on NiO/Bi2Te3 heterostructure（the inset shows the real device）
Fig. 2. XRD patterns，TEM image and Raman spectrum of NiO，Au NPs and Bi2Te3
Fig. 3. FESEM image of the morphology and EDS results of the elements analysis
Fig. 4. UV-Vis absorption and PL spectra of the NiO and NiO+Au NPs
Fig. 5. Photocurrents of the devices
Fig. 6. Responsivity comparison of different devices
Fig. 7. Dependence of the photocurrent and responsivity on incident light power density
Fig. 8. Dark currents of different devices
Fig. 9. The time dependent current response and the devices' response time
Fig. 10. Schematic diagram of the energy band
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Table 1. XRD peak's FWHM and grain size of the NiO samples with different Ni2+ concentration
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Table 2. Comparison of some key parameters of different devices
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