Synthesis of thin-film black phosphorus on a flexible substrate
By Xuesong Li, Bingchen Deng, Xiaomu Wang, Sizhe Chen, M. Vaisman, S. Karato, G. Pan, Minjoo Larry Lee, Judy J. Cha, Han Wang and 1 more. 2015
137 citations recorded by the source corpus.
We report a scalable approach to synthesize a large-area (up to 4 mm) thin black phosphorus (BP) film on a flexible substrate. We first deposit a red phosphorus thin-film on a flexible polyester substrate, followed by its conversion to BP in a high-pressure multi-anvil cell at room temperature. Raman spectroscopy and transmission electron microscopy measurements confirm the formation of a nano-crystalline BP thin-film with a thickness of around 40 nm. Optical characterization indicates a bandgap of around 0.28 eV in the converted BP, similar to the bandgap measured in exfoliated thin-films. Thin-film BP transistors exhibit a field-effect mobility of around 0.5 cm2 V−1 s−1, which can probably be further enhanced by the optimization of the conversion process at elevated temperatures. Our work opens the avenue for the future demonstration of large-scale, high quality thin-film BP.
Subfields: Electronic, Optical and Magnetic Materials, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/8cb895d46c7e1b1d56d707928f628a5800a55f89
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Citations in the corpus
- Recent advances in synthesis, properties, and applications of phosphorene (2017, background): “41 Polycrystalline BP can also be grown from red phosphorus under high pressure in an anvil press, as reported recently.(42) The successful conversion of red phosphorus to BP has also been demonstrated through sonication alone,(43) which further lowers the cost and simplifies the production process.”