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https://hdl.handle.net/10356/155874
Title: | 2D Cairo pentagonal PdPS : air-stable anisotropic ternary semiconductor with high optoelectronic performance | Authors: | Duan, Ruihuan He, Yanchao Zhu, Chao Wang, Xiaowei Zhu, Chao Zhao, Xiaoxu Zhang, Zhonghan Zeng, Qingsheng Deng, Ya Xu, Manzhang Liu, Zheng |
Keywords: | Engineering::Materials | Issue Date: | 2022 | Source: | Duan, R., He, Y., Zhu, C., Wang, X., Zhu, C., Zhao, X., Zhang, Z., Zeng, Q., Deng, Y., Xu, M. & Liu, Z. (2022). 2D Cairo pentagonal PdPS : air-stable anisotropic ternary semiconductor with high optoelectronic performance. Advanced Functional Materials. https://dx.doi.org/10.1002/adfm.202113255 | Project: | NRF-CRP22-2019-0007 NRF-CRP21-2018-0007 A2083c0052 |
Journal: | Advanced Functional Materials | Abstract: | Pentagonal 2D materials as a new member in the 2D material family have attracted increasing attention due to the exotic physical properties originating from the unique Cairo pentagonal tiling topology. Herein, the penta-PdPS atomic layers as a new air-stable 2D semiconductor with the unique puckered pentagonal low-symmetry structure are successfully exfoliated from bulk crystals grown via chemical vapor transport (CVT). Notably, 2D pentaPdPS exhibits outstanding electronic and optoelectronic performance under 650 nm laser: high electron mobility of ≈208 cm2 V−1 s−1, an ultrahigh on/off ratio of ≈108, a high photoresponsivity of 5.2 × 104 A W−1, a high photogain of 1.0 × 105, an ultrahigh detectivity of 1.0 × 1013 Jones, respectively. Significantly, the exceptional puckered pentagonal atomic structure of 2D PdPS makes it strong in-plane anisotropy in optical, electronic, and optoelectronic properties, demonstrating a sizeable anisotropic ratio of carrier mobility and photocurrent with the value of up to 3.9 and 2.3, respectively. These excellent properties make 2D Cairo Pentagonal PdPS a potential candidate in nanoelectronics, optoelectronics, polarized-nanoelectronics, which will significantly promote the development of 2D materials. | URI: | https://hdl.handle.net/10356/155874 | ISSN: | 1616-301X | DOI: | 10.1002/adfm.202113255 | Schools: | School of Materials Science and Engineering School of Electrical and Electronic Engineering |
Research Centres: | CNRS International NTU THALES Research Alliances | Rights: | © 2022 Wiley-VCH GmbH. All rights reserved. | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | EEE Journal Articles MSE Journal Articles |
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