Layered-perovskite nanowires with long-range orientational order for ultrasensitive photodetectors
2D layered metal-halide perovskites combine efficient exciton radiative recombination in crystal interior with long-distance free-carrier conduction at layer edges, which are promising candidates for realizing high-performance photovoltaic, light-emission and photodetection devices. The anisotropic...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Online Access: | https://hdl.handle.net/10356/161085 |
| _version_ | 1826112958705434624 |
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| author | Zhao, Yingjie Qiu, Yuchen Gao, Hanfei Feng, Jiangang Chen, Gaosong Jiang, Lei Wu, Yuchen |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Zhao, Yingjie Qiu, Yuchen Gao, Hanfei Feng, Jiangang Chen, Gaosong Jiang, Lei Wu, Yuchen |
| author_sort | Zhao, Yingjie |
| collection | NTU |
| description | 2D layered metal-halide perovskites combine efficient exciton radiative recombination in crystal interior with long-distance free-carrier conduction at layer edges, which are promising candidates for realizing high-performance photovoltaic, light-emission and photodetection devices. The anisotropic electrical conductivity in layered perovskites imposes an additional requirement of orientational control for enabling favorable charge transport. However, rational fabrication of single-crystalline nanostructures with pure crystallographic orientation is still elusive. Herein, large-scale pure (101)-orientated 2D-perovskite single-crystalline nanowire arrays are realized by combining solvent engineering with the capillary-bridge lithography technique. Ordered nucleation at liquid-air interface and unidirectional growth along the dewetting direction are demonstrated by fluorescence microscopy and grazing-incidence X-ray scattering in discrete capillary bridges. In consideration of crystal interior exhibiting high resistance arising from the serial insulating organic barriers and ultrafast dissociation of excitons to generate long-lived free carriers at layer edges, ultrasensitive photodetectors are demonstrated with average responsivity exceeding 1.1 × 10⁴ A W⁻¹ and detectivity exceeding 9.1 × 10¹⁵ Jones. |
| first_indexed | 2024-10-01T03:15:21Z |
| format | Journal Article |
| id | ntu-10356/161085 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:15:21Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1610852022-08-15T05:29:38Z Layered-perovskite nanowires with long-range orientational order for ultrasensitive photodetectors Zhao, Yingjie Qiu, Yuchen Gao, Hanfei Feng, Jiangang Chen, Gaosong Jiang, Lei Wu, Yuchen School of Physical and Mathematical Sciences Science::Physics Layered Perovskites Nanowires 2D layered metal-halide perovskites combine efficient exciton radiative recombination in crystal interior with long-distance free-carrier conduction at layer edges, which are promising candidates for realizing high-performance photovoltaic, light-emission and photodetection devices. The anisotropic electrical conductivity in layered perovskites imposes an additional requirement of orientational control for enabling favorable charge transport. However, rational fabrication of single-crystalline nanostructures with pure crystallographic orientation is still elusive. Herein, large-scale pure (101)-orientated 2D-perovskite single-crystalline nanowire arrays are realized by combining solvent engineering with the capillary-bridge lithography technique. Ordered nucleation at liquid-air interface and unidirectional growth along the dewetting direction are demonstrated by fluorescence microscopy and grazing-incidence X-ray scattering in discrete capillary bridges. In consideration of crystal interior exhibiting high resistance arising from the serial insulating organic barriers and ultrafast dissociation of excitons to generate long-lived free carriers at layer edges, ultrasensitive photodetectors are demonstrated with average responsivity exceeding 1.1 × 10⁴ A W⁻¹ and detectivity exceeding 9.1 × 10¹⁵ Jones. The authors acknowledge the National Natural Science Foundation (21703268 and 21633014), the Beijing Natural Science Foundation (2182081), and the MOST of China (2017YFA0204504 and 2018YFA0208502). 2022-08-15T05:29:37Z 2022-08-15T05:29:37Z 2020 Journal Article Zhao, Y., Qiu, Y., Gao, H., Feng, J., Chen, G., Jiang, L. & Wu, Y. (2020). Layered-perovskite nanowires with long-range orientational order for ultrasensitive photodetectors. Advanced Materials, 32(9), 1905298-. https://dx.doi.org/10.1002/adma.201905298 0935-9648 https://hdl.handle.net/10356/161085 10.1002/adma.201905298 31967709 2-s2.0-85078680451 9 32 1905298 en Advanced Materials © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. |
| spellingShingle | Science::Physics Layered Perovskites Nanowires Zhao, Yingjie Qiu, Yuchen Gao, Hanfei Feng, Jiangang Chen, Gaosong Jiang, Lei Wu, Yuchen Layered-perovskite nanowires with long-range orientational order for ultrasensitive photodetectors |
| title | Layered-perovskite nanowires with long-range orientational order for ultrasensitive photodetectors |
| title_full | Layered-perovskite nanowires with long-range orientational order for ultrasensitive photodetectors |
| title_fullStr | Layered-perovskite nanowires with long-range orientational order for ultrasensitive photodetectors |
| title_full_unstemmed | Layered-perovskite nanowires with long-range orientational order for ultrasensitive photodetectors |
| title_short | Layered-perovskite nanowires with long-range orientational order for ultrasensitive photodetectors |
| title_sort | layered perovskite nanowires with long range orientational order for ultrasensitive photodetectors |
| topic | Science::Physics Layered Perovskites Nanowires |
| url | https://hdl.handle.net/10356/161085 |
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