Perovskite photodetector-based single pixel color camera for artificial vision

Review Optics

Enabling smart vision with metasurfaces

Dragomir N. Neshev et al.

Summary: Optical metasurfaces, which are subwavelength-patterned surfaces that strongly interact with light, have been a popular research topic for over a decade. They offer advantages such as miniaturization of optical elements, novel functionalities for processing hidden light modalities, and the ability to adjust their properties as needed. Numerous applications focused on smart vision have emerged, envisioning the integration of meta-optical devices in robotic systems. The field is now experiencing significant industry demand, which is shaping the challenges and research directions. This review provides an overview of the application focus and discusses current challenges and future research frontiers in the field.

NATURE PHOTONICS (2023)

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Article Optics

Perovskite-based color camera inspired by human visual cells

Yujin Liu et al.

Summary: Inspired by human visual cells, researchers developed a high-resolution perovskite-based color camera that uses narrowband red, green, blue, and broadband white perovskite photodetectors as imaging sensors. The red, green, and blue perovskite photodetectors mimic cone cells for color imaging, while the white perovskite photodetector mimics rod cells for weak-light imaging. The camera can capture high-resolution color images in diffuse mode.

LIGHT-SCIENCE & APPLICATIONS (2023)

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Article Chemistry, Multidisciplinary

Perovskite Wide-Angle Field-Of-View Camera

Zhong Ji et al.

Summary: This study develops a novel wide-angle FOV camera by combining a flexible perovskite photodetector and computational technology. With the use of a single photodetector imaging technique and a large-area photodetector, this camera achieves high spatial resolution and adjustable wide FOV.

ADVANCED MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Broadband GaAsSb Nanowire Array Photodetectors for Filter-Free Multispectral Imaging

Ziyuan Li et al.

Summary: This study demonstrates a highly compact, filter-free multispectral photodetector based on GaAs0.94Sb0.06 nanowire arrays, providing wavelength-selective light detection channels without using any optical filters. The photodetectors show high responsivity and detectivity, enabling high-resolution RGB color imaging.

NANO LETTERS (2021)

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Article Multidisciplinary Sciences