Photonics Research, Volume. 11, Issue 12, 2231(2023)
Flexible, self-powered, and polarization-sensitive photodetector based on perovskite lateral heterojunction microwire arrays Editors' Pick
Fig. 1. (a) Schematic diagram of 3D perovskite and 2D Ruddlesden–Popper perovskite structures; (b)–(d) schematic diagram of process for preparing
Fig. 2. (a) SEM image of the lateral heterojunction array; (b) I, Pb, Br element distribution of lateral heterojunction; (c)–(e) fluorescence microscope photos of lateral heterojunction array; (f) absorption spectrum, (g) XRD pattern, and (h) Raman spectrum of
Fig. 3. (a) Color plot of TA spectra from
Fig. 4. (a) Sketch of a lateral heterojunction photodetector based on
Fig. 5. (a) Sketch of polarized light detection by the lateral heterojunction-based photodetector; (b)
Fig. 6. (a), (b) Photocurrent change curves of PD under different bending states; (c), (d) PD performance after different bending cycles; (e), (f) PD performance after storage in air for different times.
Fig. 7. (a) SEM image of a PDMS template with a microscale striped structure. (b) AFM image of (PEA)2PbBr4 microwire crystals. (c) Fluorescence microscope photograph of (PEA)2PbBr4 microwire crystals. (d) SEM image of the cross-section of (PEA)2PbBr4 microwire crystals.
Fig. 8. (a) Mapping of element I after 7 days. (b) Mapping of element Br after 7 days. (c)–(e) Fluorescence microscope images of heterogeneous junctions after 7 days.
Fig. 9. (a) Dark current of the device at a bias voltage of 5 V. (b) Variation curves of
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Shun-Xin Li, Jia-Cheng Feng, Yang An, Hong Xia, "Flexible, self-powered, and polarization-sensitive photodetector based on perovskite lateral heterojunction microwire arrays," Photonics Res. 11, 2231 (2023)
Category: Optoelectronics
Received: May. 31, 2023
Accepted: Oct. 5, 2023
Published Online: Dec. 1, 2023
The Author Email: Hong Xia (hxia@jlu.edu.cn)