Alkali-Assisted Phosphorene Stabilization with Robust Device Performances
- Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering; Nanjing Univ. of Posts and Telecommunications (China). School of Electronic Science and Engineering
- Nanjing Univ. (China). School of Electronic Science and Engineering
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering
- Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
Phosphorene (few-layer black phosphorus) has been widely investigated for its unique optical and electronic properties. However, it is challenging to synthesize and process stable phosphorene as it degrades rapidly upon exposure to oxygen and moisture under ambient conditions, which has limited its use in practical applications. In this paper, we propose an alkali-assisted stabilization process to produce high-quality phosphorene nanosheets. Our morphology measurements show that alkali-treated phosphorene remains stable for over 7 days in air. Electrical measurements on alkali-treated BP devices further proved its stable electrical property under ambient conditions. We further demonstrate superior light-assisted electrochemical water splitting performance using stable phosphorene. We attribute the stabilization effect to the chemical modification of the surface of phosphorene with P–OH bond formation. This study paves the avenue for the implementation of phosphorene devices in ambient conditions.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- Samsung Advanced Institute of Technology; USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1646562
- Report Number(s):
- LLNL-JRNL--773210; 965313
- Journal Information:
- Nano Letters, Journal Name: Nano Letters Journal Issue: 1 Vol. 20; ISSN 1530-6984
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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