Photonics Research, Volume. 8, Issue 12, 1862(2020)
High detectivity photodetectors based on perovskite nanowires with suppressed surface defects
Fig. 1. (a) Optical image of
Fig. 2. (a) Logarithmic
Fig. 3. (a) Current versus illumination power density (i.e., LDR measurement) of the prepared photodetector under 532-nm continuous laser illumination. (b) External quantum efficiency (EQE) versus illumination power density. (c) Responsivity (
Fig. 4. (a) Transient photo response measurement of the fabricated
Fig. 5. Schematic illustration of the surface-initiated solution-growth strategy for preparing the single-crystalline
Fig. 6. (a)–(d) Optical images of
Fig. 7. Experimental XRD pattern of as-grown
Fig. 8. (a) Experimental XRD pattern of the
Fig. 9. Microscopic characterizations of the as-grown
Fig. 10. AFM morphology of the PEDOT:PSS surface. It has an average RMS value of 0.16 nm, only a bit lower than that of the as-grown
Fig. 11. (a) Schematic diagram of the fabricated MSM-type
Fig. 12. Dark and photo
Fig. 13. Measured dark-current noise at various frequencies for the
Fig. 14. (a), (b) Illumination spectrum with power densities of
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Guohui Li, Rui Gao, Yue Han, Aiping Zhai, Yucheng Liu, Yue Tian, Bining Tian, Yuying Hao, Shengzhong Liu, Yucheng Wu, Yanxia Cui. High detectivity photodetectors based on perovskite nanowires with suppressed surface defects[J]. Photonics Research, 2020, 8(12): 1862
Category: Optical and Photonic Materials
Received: Jul. 27, 2020
Accepted: Sep. 28, 2020
Published Online: Nov. 19, 2020
The Author Email: Yanxia Cui (yanxiacui@gmail.com)