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 inIEEE sensors journal Vol. 17; no. 14; pp. 4454 - 4459
Main Authors De Iacovo, Andrea, Venettacci, Carlo, Colace, Lorenzo, Scopa, Leonardo, Foglia, Sabrina
Format Journal Article
LanguageEnglish
Published New York IEEE 15.07.2017
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
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