PbS Colloidal Quantum Dot Visible-Blind Photodetector for Early Indoor Fire Detection

We report on a novel optical fire detector based on a PbS colloidal quantum dot photodetector. The sensor is realized with a simple, cost effective, drop casting technique. The photodetector is characterized in terms of its electrical characteristics, responsivity, and specific detectivity to monoch...

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Bibliographic Details
Published in:IEEE sensors journal 2017-07, Vol.17 (14), p.4454-4459
Main Authors: De Iacovo, Andrea, Venettacci, Carlo, Colace, Lorenzo, Scopa, Leonardo, Foglia, Sabrina
Format: Article
Language:English
Subjects:
Colloids
Detectors
Field of view
Fire alarms
Fire detection
Lead
Lenses
near infrared photodetectors
Noise prediction
Optical fire detector
Optical sensors
PbS colloidal quantum dot
Photoconducting materials
Photodetectors
Quantum dots
Signal to noise ratio
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Summary:We report on a novel optical fire detector based on a PbS colloidal quantum dot photodetector. The sensor is realized with a simple, cost effective, drop casting technique. The photodetector is characterized in terms of its electrical characteristics, responsivity, and specific detectivity to monochromatic light. We demonstrate effective indoor fire detection at a distance exceeding 20 m with a 120° field of view. We also show a twofold improvement of the detector signal to noise ratio exploiting a short focal lens.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2017.2710301