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Graphene

Image sensors go broadband

Nature Photonics volume 11, pages 332–333 (2017)Cite this article

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The demonstration of a quantum dot-sensitized graphene image sensor that offers a very broad spectral response and that is integrated with silicon CMOS technology could potentially be a new cost-effective chip platform for hyperspectral imaging and spectroscopy.

The development of image sensor technologies that operate at wavelengths beyond the limits of the human visual system is important for the realization of cost-effective multispectral and hyperspectral imaging (HSI), where light is detected in several discrete wavebands or a very broad spectral region, respectively. Usually, such techniques necessitate the use of multiple detectors each targeting a different wavelength region, which considerably raises the cost and complexity. Now, a report in Nature Photonics of a hybrid graphene–silicon image sensor chip that offers broadband operation spanning from 300 nm to 2 μm could change the situation1.

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Figure 1: Schematic showing the structure of a single pixel of the graphene–CMOS image sensor array and its light-sensing principle.

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Authors and Affiliations

  1. the Institute for Applied Microelectronics (IUMA), University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, 35017, Spain

    Gustavo Marrero Callicó

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  1. Gustavo Marrero Callicó
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Correspondence to Gustavo Marrero Callicó.

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Callicó, G. Image sensors go broadband. Nature Photon 11, 332–333 (2017). https://doi.org/10.1038/nphoton.2017.83

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