Passive frequency conversion of ultraviolet images into the visible using perovskite nanocrystals

Author:

Salman JadORCID,Gangishetty Mahesh K,Rubio-Perez Bryan E,Feng Demeng,Yu ZhaoningORCID,Yang Zongzhen,Wan ChenghaoORCID,Frising Michel,Shahsafi Alireza,Congreve Daniel NORCID,Kats Mikhail AORCID

Abstract

Abstract We demonstrate a passive down-conversion imaging system that converts broadband ultraviolet light to narrow-band green light while preserving the directionality of rays, and thus enabling direct down-conversion imaging. At the same time our system has high transparency in the visible, enabling superimposed visible and ultraviolet imaging. The frequency conversion is performed by a subwavelength-thickness transparent downconverter based on highly efficient CsPbBr3 nanocrystals incorporated into the focal plane of a simple telescope or relay-lens geometry. The resulting imaging performance of this down-conversion system approaches the diffraction limit. This demonstration sets the stage for the incorporation of other high-efficiency perovskite nanocrystal materials to enable passive multi-frequency conversion imaging systems.

Funder

Air Force Office of Scientific Research

Publisher

IOP Publishing

Subject

Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials

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