Near-infrared photodetector consisting of J-aggregating cyanine dye and metal oxide thin films
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Bulovic_Near-infared.pdf
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Author(s)
Osedach, Timothy Paul
Iacchetti, Antonio
Lunt, Richard R.
Andrew, Trisha Lionel
Brown, Patrick Richard
Akselrod, Gleb Markovitch
Bulovic, Vladimir
Date Issued
September 2012
Journal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Citation
Osedach, Timothy P., Antonio Iacchetti, Richard R. Lunt, Trisha L. Andrew, Patrick R. Brown, Gleb M. Akselrod, and Vladimir Bulović. “Near-Infrared Photodetector Consisting of J-Aggregating Cyanine Dye and Metal Oxide Thin Films.” Appl. Phys. Lett. 101, no. 11 (2012): 113303. © 2012 American Institute of Physics
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Final published version
Abstract
We demonstrate a near-infrared photodetector that consists of a thin film of the J-aggregating cyanine dye, U3, and transparent metal-oxide charge transport layers. The high absorption coefficient of the U3 film, combined with the use of a reflective anode and optical spacer layer, results in a zero-bias external quantum efficiency of 16.1 ± 0.1% (λ = 756 nm) for a device containing an 8.1 ± 0.3 nm-thick U3 film. The specific detectivity (D*) and response speed (f [subscript 3 dB]) of a fully optimized device are measured to be (4.3 ± 0.1) × 10[superscript 11] cm Hz[superscript 1/2] W[superscript −1] and 92 kHz, respectively.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. School of Engineering
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DOI of Published Version
https://doi.org/10.1063/1.4752434
