Passive frequency conversion of ultraviolet images into the visible using perovskite nanocrystals
| Autor: | Salman, Jad, Gangishetty, Mahesh K., Rubio-Perez, Bryan E., Feng, Demeng, Yu, Zhaoning, Yang, Zongzhen, Wan, Chenghao, Frising, Michel, Shahsafi, Alireza, Congreve, Daniel N., Kats, Mikhail A. |
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| Rok vydání: | 2021 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/2040-8986/abf171 |
| Popis: | 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. Comment: Main text + supplementary |
| Databáze: | arXiv |
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