Effective photoconductivity of exfoliated black phosphorus for optoelectronic switching under 1.55 μm optical excitation
| Autor: | A. Penillard, C. Tripon-Canseliet, Zheng Liu, I. Maksimovic, E. Géron, M. Rosticher |
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| Přispěvatelé: | School of Materials Science & Engineering |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science business.industry Band gap Photoconductivity Phosphorus General Physics and Astronomy chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences law.invention Photoexcitation chemistry law 0103 physical sciences Optoelectronics Direct and indirect band gaps 0210 nano-technology business Microwaves Microwave Excitation |
| Popis: | We present a microwave photoconductive switch based on exfoliated black phosphorus and strongly responding to a 1.55 μm optical excitation. According to its number of atomic layers, exfoliated black phosphorus presents unique properties for optoelectronic applications, like a tunable direct bandgap from 0.3 eV to 2 eV, strong mobilities, and strong conductivities. The switch shows a maximum ON/OFF ratio of 17 dB at 1 GHz, and 2.2 dB at 20 GHz under 1.55-μm laser excitation at 50 mW, never achieved with bidimensional materials. Published version |
| Databáze: | OpenAIRE |
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