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- Title
Black Phosphorus Quantum Dots.
- Authors
Zhang, Xiao; Xie, Haiming; Liu, Zhengdong; Tan, Chaoliang; Luo, Zhimin; Li, Hai; Lin, Jiadan; Sun, Liqun; Chen, Wei; Xu, Zhichuan; Xie, Linghai; Huang, Wei; Zhang, Hua
- Abstract
As a unique two-dimensional nanomaterial, layered black phosphorus (BP) nanosheets have shown promising applications in electronics. Although mechanical exfoliation was successfully used to prepare BP nanosheets, it is still a challenge to produce novel BP nanostructures in high yield. A facile top-down approach for preparation of black phosphorus quantum dots (BPQDs) in solution is presented. The obtained BPQDs have a lateral size of 4.9±1.6 nm and thickness of 1.9±0.9 nm (ca. 4±2 layers). As a proof-of-concept application, by using BPQDs mixed with polyvinylpyrrolidone as the active layer, a flexible memory device was successfully fabricated that exhibits a nonvolatile rewritable memory effect with a high ON/OFF current ratio and good stability.
- Subjects
QUANTUM dot synthesis; POVIDONE; PHOSPHORUS compound synthesis; PHOTOVOLTAIC power systems; OPTICAL properties of graphene
- Publication
Angewandte Chemie, 2015, Vol 127, Issue 12, p3724
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201409400