Two-Dimensional Tellurium Nanosheets Exhibiting an Anomalous Switchable Photoresponse with Thickness Dependence
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim..
Two-dimensional (2D) tellurium (Te) was recently predicted to be promising for diverse electronic and optoelectronic applications. However, the synthesis of high-quality 2D Te structures remains challenging, which greatly hinders the exploration of its full properties. Herein, an anomalous photoresponse from negative to positive as a function of thickness in Te nanosheets is reported. Ultrathin Te layers with large size and clean interface were obtained through a topotactic transformation, in which the 2D Te structure was derived from a layered MTe2 (M=Ti, Mo, W) matrix by excessive lithiation. Prominently, the photoresponse in Te nanosheets exhibits negative behavior when the thickness is less than 5 nm, which turns positive as the thickness increases. This unusual photoresponse will shed light on the full exploration of 2D non-layered materials with exotic properties.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2018 |
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| Erschienen: |
2018 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:57 |
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| Enthalten in: |
Angewandte Chemie (International ed. in English) - 57(2018), 41 vom: 08. Okt., Seite 13533-13537 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Peng, Jing [VerfasserIn] |
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| Links: |
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| Themen: |
2D materials |
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| Anmerkungen: |
Date Revised 20.11.2019 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1002/anie.201808050 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM287162796 |
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| 520 | |a © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. | ||
| 520 | |a Two-dimensional (2D) tellurium (Te) was recently predicted to be promising for diverse electronic and optoelectronic applications. However, the synthesis of high-quality 2D Te structures remains challenging, which greatly hinders the exploration of its full properties. Herein, an anomalous photoresponse from negative to positive as a function of thickness in Te nanosheets is reported. Ultrathin Te layers with large size and clean interface were obtained through a topotactic transformation, in which the 2D Te structure was derived from a layered MTe2 (M=Ti, Mo, W) matrix by excessive lithiation. Prominently, the photoresponse in Te nanosheets exhibits negative behavior when the thickness is less than 5 nm, which turns positive as the thickness increases. This unusual photoresponse will shed light on the full exploration of 2D non-layered materials with exotic properties | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a 2D materials | |
| 650 | 4 | |a switchable photoresponse | |
| 650 | 4 | |a tellurium | |
| 650 | 4 | |a thickness dependence | |
| 650 | 4 | |a topotactic transformation | |
| 700 | 1 | |a Pan, Yu |e verfasserin |4 aut | |
| 700 | 1 | |a Yu, Zhi |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Jiajing |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Junchi |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Yuan |e verfasserin |4 aut | |
| 700 | 1 | |a Guo, Yuqiao |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Xiaojun |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Changzheng |e verfasserin |4 aut | |
| 700 | 1 | |a Xie, Yi |e verfasserin |4 aut | |
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