Skip to Main content Skip to Navigation
Journal articles

Strategy to overcome recombination limited photocurrent generation in CsPbX 3 nanocrystal arrays

Abstract : We discuss the transport properties of CsPbBrxI3x perovskite nanocrystal arrays as a model ensemble system of caesium lead halide-based perovskite nanocrystal arrays. While this material is very promising for the design of light emitting diodes, laser, and solar cells, very little work has been devoted to the basic understanding of their (photo)conductive properties in an ensemble system. By combining DC and time-resolved photocurrent measurements, we demonstrate fast photodetection with time response below 2 ns. The photocurrent generation in perovskite nanocrystal-based arrays is limited by fast bimolecular recombination of the material, which limits the lifetime of the photogenerated electron-hole pairs. We propose to use nanotrench electrodes as a strategy to ensure that the device size fits within the obtained diffusion length of the material in order to boost the transport efficiency and thus observe an enhancement of the photoresponse by a factor of 1000.
Complete list of metadata

Cited literature [40 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01736970
Contributor : emmanuel lhuillier Connect in order to contact the contributor
Submitted on : Monday, July 16, 2018 - 2:59:56 PM
Last modification on : Saturday, June 25, 2022 - 10:32:27 PM
Long-term archiving on: : Monday, October 1, 2018 - 1:50:30 PM

File

transportperov_V29.pdf
Files produced by the author(s)

Identifiers

Citation

Wasim J Mir, Clément Livache, Nicolas Goubet, Bertille J Martinez, Amardeep Jagtap, et al.. Strategy to overcome recombination limited photocurrent generation in CsPbX 3 nanocrystal arrays. Applied Physics Letters, American Institute of Physics, 2018, 112 (11), pp.113503. ⟨10.1063/1.5009432⟩. ⟨hal-01736970⟩

Share

Metrics

Record views

638

Files downloads

170