A Delamination Strategy for Thinly Layered Defect-Free High-Mobility Black Phosphorus Flakes
Yang S, Zhang K, Ricciardulli AG, Zhang P, Liao Z, Lohe MR, Zschech E, Blom PWM, Pisula W, Muellen K, Feng X (2018)
Publication Type: Journal article
Publication year: 2018
Journal
Book Volume: 57
Pages Range: 4677-4681
Journal Issue: 17
Abstract
Extraordinary electronic and photonic features render black phosphorus (BP) an important material for the development of novel electronics and optoelectronics. Despite recent progress in the preparation of thinly layered BP flakes, scalable synthesis of large-size, pristine BP flakes remains a major challenge. An electrochemical delamination strategy is demonstrated that involves intercalation of diverse cations in non-aqueous electrolytes, thereby peeling off bulk BP crystals into defect-free flakes comprising only a few layers. The interplay between tetra-n-butylammonium cations and bisulfate anions promotes a high exfoliation yield up to 78 % and large BP flakes up to 20.6 μm. Bottom-gate and bottom-contact field-effect transistors, comprising single BP flakes only a few layers thick, exhibit a high hole mobility of 252±18 cm2 V−1 s−1 and a remarkable on/off ratio of (1.2±0.15)×105 at 143 K under vacuum. This efficient and scalable delamination method holds great promise for development of BP-based composites and optoelectronic devices.
Involved external institutions
Technische Universität Dresden
Germany (DE)
Fraunhofer-Institut für Keramische Technologien und Systeme (IKTS)
Germany (DE)
Max-Planck-Institut für Polymerforschung (MPI-P) / Max Planck Institute for Polymer Research
Germany (DE)
Germany (DE)
Fraunhofer-Institut für Keramische Technologien und Systeme (IKTS)
Germany (DE)
Max-Planck-Institut für Polymerforschung (MPI-P) / Max Planck Institute for Polymer Research
Germany (DE)
How to cite
APA:
Yang, S., Zhang, K., Ricciardulli, A.G., Zhang, P., Liao, Z., Lohe, M.R.,... Feng, X. (2018). A Delamination Strategy for Thinly Layered Defect-Free High-Mobility Black Phosphorus Flakes. Angewandte Chemie International Edition, 57(17), 4677-4681. https://doi.org/10.1002/anie.201801265
MLA:
Yang, Sheng, et al. "A Delamination Strategy for Thinly Layered Defect-Free High-Mobility Black Phosphorus Flakes." Angewandte Chemie International Edition 57.17 (2018): 4677-4681.
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