Filterless narrowband visible photodetectors

Lin, Qianqian, Armin, Ardalan, Burn, Paul L. and Meredith, Paul (2015) Filterless narrowband visible photodetectors. Nature Photonics, 9 10: 687-694. doi:10.1038/nphoton.2015.175

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Author Lin, Qianqian
Armin, Ardalan
Burn, Paul L.
Meredith, Paul
Title Filterless narrowband visible photodetectors
Journal name Nature Photonics   Check publisher's open access policy
ISSN 1749-4893
Publication date 2015-09-14
Year available 2015
Sub-type Article (original research)
DOI 10.1038/nphoton.2015.175
Open Access Status Not yet assessed
Volume 9
Issue 10
Start page 687
End page 694
Total pages 9
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Language eng
Subject 2504 Electronic, Optical and Magnetic Materials
3107 Atomic and Molecular Physics, and Optics
Abstract Wavelength-selective light detection is crucial for many applications, including imaging and machine vision. Narrowband spectral responses are required for colour discrimination, and current systems use broadband photodiodes combined with optical filters. This approach increases the architectural complexity and limits the quality of colour sensing. Here we report a method for tuning the spectral response to give filterless, narrowband red, green and blue photodiodes. The devices have simple planar junction architectures with the photoactive layer being a solution-processed mixture of either an organohalide perovskite or lead halide semiconductor and an organic (macro)molecule. The organic (macro)molecules modify the optical and electrical properties of the photodiode and facilitate charge collection narrowing of the device's external quantum efficiency. These red, green and blue photodiodes all possess full-width at half-maxima of <100 nm and performance metrics suitable for many imaging applications.
Keyword Perovskite Solar-Cells
Organometal Halide Perovskite
Organic Photodiodes
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

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