Black phosphorus mid-infrared photodetectors
Few-layer black phosphorus (BP) has emerged as a promising 2D material for photodetection in the mid-infrared spectral range given its narrow bandgap. However, a comprehensive understanding of BP photodetector’s response in the mid-infrared is still lacking. In this paper, we study the photoresponse...
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| Veröffentlicht in: | Applied physics. B, Lasers and optics Lasers and optics, 2017-04, Vol.123 (4), p.1-5, Article 130 |
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| container_title | Applied physics. B, Lasers and optics |
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| creator | Xu, Mei Gu, Yuqian Peng, Ruoming Youngblood, Nathan Li, Mo |
| description | Few-layer black phosphorus (BP) has emerged as a promising 2D material for photodetection in the mid-infrared spectral range given its narrow bandgap. However, a comprehensive understanding of BP photodetector’s response in the mid-infrared is still lacking. In this paper, we study the photoresponse of few-layer BP photodetector in the mid-infrared range from 2.5 to 3.7 µm. We identify broadband photoresponse of BP photodetectors in the mid-infrared and observe saturation of the response with optical power. Through frequency and time domain measurements, we have also identified the two dominate mechanisms in our device to be due to the photovoltaic and photogating effects. Our results provide valuable information for optimization of BP mid-infrared photodetectors toward rivaling the current infrared photodetection technology based on compound semiconductors. |
| doi_str_mv | 10.1007/s00340-017-6698-7 |
| format | Article |
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| subjects | Applied physics Broadband Engineering Infrared spectra Lasers Optical Devices Optics Optimization Phosphorus Photometers Photonics Physical Chemistry Physics Physics and Astronomy Quantum Optics Two dimensional materials |
| title | Black phosphorus mid-infrared photodetectors |
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