Black phosphorus photodetector for multispectral, high-resolution imaging
Engel, Michael; Steiner, Mathias; Avouris, Phaedon
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Resumo
Black phosphorus is a layered semiconductor that is intensely researched in view of applications in optoelectronics. In this letter, we investigate a multilayer black phosphorus photodetector that is capable of acquiring high-contrast (V > 0.9) images both in the visible (lambda(VIS) = 532 nm) as well as in the infrared (lambda(IR) = 1550 nm) spectral regime. In a first step, by using photocurrent microscopy, we map the active area of the device and we characterize responsivity and gain. In a second step, by deploying the black phosphorus device as a point-like detector in a confocal microsope setup, we acquire diffraction-limited optical images with submicron resolution. The results demonstrate the usefulness of black phosphorus as an optoelectronic material for hyperspectral imaging applications.
Ficha do documento
- Tipo
- Artigo científico
- Ano
- 2014
- Instituição
- Amer Chemical Soc
- Fonte
- Repositório da FGV
- Idioma
- Inglês
- Acesso
- Acesso restrito
- Identificador
- oai:repositorio.fgv.br:10438/23436
- Temas
- Tecnologia
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