Narrowband colloidal quantum dot photodetectors for wavelength measurement applications

High performance photodetectors based on colloidal quantum dots have been demonstrated in a wide spectral range spanning from the visible to the mid infrared. Quantum dot photodetectors typically show a low-pass type spectral response with a tunable cutoff wavelength. In this paper, we propose a met...

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Published inNanoscale Vol. 12; no. 18; pp. 144 - 15
Main Authors De Iacovo, Andrea, Venettacci, Carlo, Giansante, Carlo, Colace, Lorenzo
Format Journal Article
LanguageEnglish
Published England Royal Society of Chemistry 14.05.2020
Subjects
Colloids
Cut off wavelength
Electrons
Infrared spectra
Narrowband
Near infrared radiation
Optical filters
Photoconductors
Photometers
Quantum dots
Spectral sensitivity
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Summary:High performance photodetectors based on colloidal quantum dots have been demonstrated in a wide spectral range spanning from the visible to the mid infrared. Quantum dot photodetectors typically show a low-pass type spectral response with a tunable cutoff wavelength. In this paper, we propose a method for the realization of narrowband photodetectors based on the combination of photoconductors and optical filters, both realized with colloidal PbS quantum dots. We demonstrate that an array of such narrowband photodetectors can be effectively employed for the realization of a compact wavemeter operating in the visible and near-infrared spectral range. PbS quantum dot narrowband photoconductors employed for the realization of a compact wavelength-meter system.
Bibliography:Electronic supplementary information (ESI) available. See DOI
10.1039/d0nr02626c
ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:2040-3364
2040-3372
DOI:10.1039/d0nr02626c