Ambient-Processed Colloidal Quantum Dot Solar Cells via Individual Pre-Encapsulation of Nanoparticles

Ratan Debnath; Jiang Tang; D. Aaron Barkhouse; Xihua Wang; Andras G. Pattantyus-Abraham; Lukasz Brzozowski; Larissa Levina; Edward H. Sargent

doi:10.1021/ja1013695

Ambient-Processed Colloidal Quantum Dot Solar Cells via Individual Pre-Encapsulation of Nanoparticles

Ratan Debnath, Jiang Tang, D. Aaron Barkhouse, Xihua Wang, Andras G. Pattantyus-Abraham, Lukasz Brzozowski, Larissa Levina, Edward H. Sargent

Research output: Contribution to journal › Article › peer-review

135 Scopus citations

Abstract

We report colloidal quantum dot solar cells fabricated under ambient atmosphere with an active area of 2.9 mm2 that exhibit 3.6% solar power conversion efficiency. The devices are based on PbS tuned via the quantum size effect to have a first excitonic peak at 950 nm. Because the formation of native oxides and sulfates on PbS leads to p-type doping and deep trap formation and because such dopants and traps dramatically influence device performance, prior reports of colloidal quantum dot solar cells have insisted on processing under an inert atmosphere. Here we report a novel ligand strategy in which we first encapsulate the quantum dots in the solution phase with the aid of a strongly bound N-2,4,6-trimethylphenyl-N-methyldithiocarbamate ligand. This allows us to carry out film formation and all subsequent device fabrication under an air atmosphere. © 2010 American Chemical Society.

Original language	English (US)
Pages (from-to)	5952-5953
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	132
Issue number	17
DOIs	https://doi.org/10.1021/ja1013695
State	Published - May 5 2010
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-II-009-21
Acknowledgements: This research was supported by the Natural Sciences and Engineering Research Council (NSERC) of Canada and in part by Award KUS-II-009-21 from King Abdullah University of Science and Technology (KAUST). R.D. and D.A.B acknowledge financial support through e8 and NSERC fellowships, respectively.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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title = "Ambient-Processed Colloidal Quantum Dot Solar Cells via Individual Pre-Encapsulation of Nanoparticles",

abstract = "We report colloidal quantum dot solar cells fabricated under ambient atmosphere with an active area of 2.9 mm2 that exhibit 3.6% solar power conversion efficiency. The devices are based on PbS tuned via the quantum size effect to have a first excitonic peak at 950 nm. Because the formation of native oxides and sulfates on PbS leads to p-type doping and deep trap formation and because such dopants and traps dramatically influence device performance, prior reports of colloidal quantum dot solar cells have insisted on processing under an inert atmosphere. Here we report a novel ligand strategy in which we first encapsulate the quantum dots in the solution phase with the aid of a strongly bound N-2,4,6-trimethylphenyl-N-methyldithiocarbamate ligand. This allows us to carry out film formation and all subsequent device fabrication under an air atmosphere. {\textcopyright} 2010 American Chemical Society.",

author = "Ratan Debnath and Jiang Tang and Barkhouse, {D. Aaron} and Xihua Wang and Pattantyus-Abraham, {Andras G.} and Lukasz Brzozowski and Larissa Levina and Sargent, {Edward H.}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-II-009-21 Acknowledgements: This research was supported by the Natural Sciences and Engineering Research Council (NSERC) of Canada and in part by Award KUS-II-009-21 from King Abdullah University of Science and Technology (KAUST). R.D. and D.A.B acknowledge financial support through e8 and NSERC fellowships, respectively. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

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AU - Pattantyus-Abraham, Andras G.

AU - Brzozowski, Lukasz

AU - Levina, Larissa

AU - Sargent, Edward H.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-II-009-21 Acknowledgements: This research was supported by the Natural Sciences and Engineering Research Council (NSERC) of Canada and in part by Award KUS-II-009-21 from King Abdullah University of Science and Technology (KAUST). R.D. and D.A.B acknowledge financial support through e8 and NSERC fellowships, respectively. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2010/5/5

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N2 - We report colloidal quantum dot solar cells fabricated under ambient atmosphere with an active area of 2.9 mm2 that exhibit 3.6% solar power conversion efficiency. The devices are based on PbS tuned via the quantum size effect to have a first excitonic peak at 950 nm. Because the formation of native oxides and sulfates on PbS leads to p-type doping and deep trap formation and because such dopants and traps dramatically influence device performance, prior reports of colloidal quantum dot solar cells have insisted on processing under an inert atmosphere. Here we report a novel ligand strategy in which we first encapsulate the quantum dots in the solution phase with the aid of a strongly bound N-2,4,6-trimethylphenyl-N-methyldithiocarbamate ligand. This allows us to carry out film formation and all subsequent device fabrication under an air atmosphere. © 2010 American Chemical Society.

AB - We report colloidal quantum dot solar cells fabricated under ambient atmosphere with an active area of 2.9 mm2 that exhibit 3.6% solar power conversion efficiency. The devices are based on PbS tuned via the quantum size effect to have a first excitonic peak at 950 nm. Because the formation of native oxides and sulfates on PbS leads to p-type doping and deep trap formation and because such dopants and traps dramatically influence device performance, prior reports of colloidal quantum dot solar cells have insisted on processing under an inert atmosphere. Here we report a novel ligand strategy in which we first encapsulate the quantum dots in the solution phase with the aid of a strongly bound N-2,4,6-trimethylphenyl-N-methyldithiocarbamate ligand. This allows us to carry out film formation and all subsequent device fabrication under an air atmosphere. © 2010 American Chemical Society.

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Ambient-Processed Colloidal Quantum Dot Solar Cells via Individual Pre-Encapsulation of Nanoparticles

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