We discuss the transport properties of CsPbBrxI3−x 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.
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12 March 2018
Research Article|
March 16 2018
Strategy to overcome recombination limited photocurrent generation in CsPbX3 nanocrystal arrays
Wasim J. Mir
;
Wasim J. Mir
a)
1
Sorbonne Université, UPMC Univ. Paris 06, CNRS-UMR 7588, Institut des NanoSciences de Paris
, 4 place Jussieu, 75005 Paris, France
2
Department of Chemistry, Indian Institute of Science Education and Research (IISER)
, Pune 411008, India
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Clément Livache;
Clément Livache
a)
1
Sorbonne Université, UPMC Univ. Paris 06, CNRS-UMR 7588, Institut des NanoSciences de Paris
, 4 place Jussieu, 75005 Paris, France
3
Laboratoire de Physique et d'Étude des Matériaux, ESPCI-ParisTech, PSL Research University, Sorbonne Université UPMC Univ Paris 06
, CNRS, 10 rue Vauquelin, 75005 Paris, France
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Nicolas Goubet
;
Nicolas Goubet
1
Sorbonne Université, UPMC Univ. Paris 06, CNRS-UMR 7588, Institut des NanoSciences de Paris
, 4 place Jussieu, 75005 Paris, France
3
Laboratoire de Physique et d'Étude des Matériaux, ESPCI-ParisTech, PSL Research University, Sorbonne Université UPMC Univ Paris 06
, CNRS, 10 rue Vauquelin, 75005 Paris, France
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Bertille Martinez;
Bertille Martinez
1
Sorbonne Université, UPMC Univ. Paris 06, CNRS-UMR 7588, Institut des NanoSciences de Paris
, 4 place Jussieu, 75005 Paris, France
3
Laboratoire de Physique et d'Étude des Matériaux, ESPCI-ParisTech, PSL Research University, Sorbonne Université UPMC Univ Paris 06
, CNRS, 10 rue Vauquelin, 75005 Paris, France
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Amardeep Jagtap;
Amardeep Jagtap
1
Sorbonne Université, UPMC Univ. Paris 06, CNRS-UMR 7588, Institut des NanoSciences de Paris
, 4 place Jussieu, 75005 Paris, France
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Audrey Chu;
Audrey Chu
1
Sorbonne Université, UPMC Univ. Paris 06, CNRS-UMR 7588, Institut des NanoSciences de Paris
, 4 place Jussieu, 75005 Paris, France
3
Laboratoire de Physique et d'Étude des Matériaux, ESPCI-ParisTech, PSL Research University, Sorbonne Université UPMC Univ Paris 06
, CNRS, 10 rue Vauquelin, 75005 Paris, France
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Nathan Coutard;
Nathan Coutard
4
Laboratoire de Chimie et Biologie des Métaux, Université Grenoble Alpes
, CNRS, CEA, 17 rue des Martyrs, 38000 Grenoble, France
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Hervé Cruguel;
Hervé Cruguel
1
Sorbonne Université, UPMC Univ. Paris 06, CNRS-UMR 7588, Institut des NanoSciences de Paris
, 4 place Jussieu, 75005 Paris, France
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Thierry Barisien;
Thierry Barisien
1
Sorbonne Université, UPMC Univ. Paris 06, CNRS-UMR 7588, Institut des NanoSciences de Paris
, 4 place Jussieu, 75005 Paris, France
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Sandrine Ithurria;
Sandrine Ithurria
3
Laboratoire de Physique et d'Étude des Matériaux, ESPCI-ParisTech, PSL Research University, Sorbonne Université UPMC Univ Paris 06
, CNRS, 10 rue Vauquelin, 75005 Paris, France
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Angshuman Nag;
Angshuman Nag
2
Department of Chemistry, Indian Institute of Science Education and Research (IISER)
, Pune 411008, India
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Benoit Dubertret;
Benoit Dubertret
3
Laboratoire de Physique et d'Étude des Matériaux, ESPCI-ParisTech, PSL Research University, Sorbonne Université UPMC Univ Paris 06
, CNRS, 10 rue Vauquelin, 75005 Paris, France
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Abdelkarim Ouerghi;
Abdelkarim Ouerghi
5
Centre de Nanosciences et de Nanotechnologies, CNRS, University of Paris-Sud, Université Paris-Saclay
, C2N, Marcoussis 91460, France
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Mathieu G. Silly;
Mathieu G. Silly
6
Synchrotron-SOLEIL
, Saint-Aubin, BP48, F91192 Gif sur Yvette Cedex, France
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Emmanuel Lhuillier
Emmanuel Lhuillier
b)
1
Sorbonne Université, UPMC Univ. Paris 06, CNRS-UMR 7588, Institut des NanoSciences de Paris
, 4 place Jussieu, 75005 Paris, France
b)Author to whom correspondence should be addressed: el@insp.upmc.fr
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a)
W. J. Mir and C. Livache contributed equally to this work.
b)Author to whom correspondence should be addressed: el@insp.upmc.fr
Appl. Phys. Lett. 112, 113503 (2018)
Article history
Received:
October 16 2017
Accepted:
March 06 2018
Citation
Wasim J. Mir, Clément Livache, Nicolas Goubet, Bertille Martinez, Amardeep Jagtap, Audrey Chu, Nathan Coutard, Hervé Cruguel, Thierry Barisien, Sandrine Ithurria, Angshuman Nag, Benoit Dubertret, Abdelkarim Ouerghi, Mathieu G. Silly, Emmanuel Lhuillier; Strategy to overcome recombination limited photocurrent generation in CsPbX3 nanocrystal arrays. Appl. Phys. Lett. 12 March 2018; 112 (11): 113503. https://doi.org/10.1063/1.5009432
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