Solution-Processed, Ultrathin Solar Cells from CdCl3--Capped CdTe Nanocrystals: The Multiple Roles of CdCl3- Ligands

Hao Zhang; J. Matthew Kurley; Jake C. Russell; Jaeyoung Jang; Dmitri V. Talapin

doi:10.1021/jacs.6b03240

Solution-Processed, Ultrathin Solar Cells from CdCl₃^--Capped CdTe Nanocrystals: The Multiple Roles of CdCl₃^- Ligands

Hao Zhang
, J. Matthew Kurley
, Jake C. Russell
, Jaeyoung Jang
, Dmitri V. Talapin

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

67 Scopus citations

Abstract

Solution-processed CdTe solar cells using CdTe nanocrystal (NC) ink may offer an economically viable route for large-scale manufacturing. Here we design a new CdCl₃^--capped CdTe NC ink by taking advantage of novel surface chemistry. In this ink, CdCl₃^- ligands act as surface ligands, sintering promoters, and dopants. Our solution chemistry allows obtaining very thin continuous layers of high-quality CdTe which is challenging for traditional vapor transport methods. Using benign solvents, in air, and without additional CdCl₂ treatment, we obtain a well-sintered CdTe absorber layer from the new ink and demonstrate thin-film solar cells with power conversion efficiency over 10%, a record efficiency for sub-400 nm thick CdTe absorber layer.

Original language	English
Pages (from-to)	7464-7467
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	138
Issue number	24
DOIs	https://doi.org/10.1021/jacs.6b03240
State	Published - Jun 22 2016
Externally published	Yes

Funding

We thank Gregory Pach and Bobby To at National Renewable Energy Laboratory and Qiti Guo at Materials Research Science and Engineering Center at University of Chicago for the help with cross-sectional SEM images. This work was supported by the Department of Defense Office of Naval Research under grant no. N00014-13-1-0490, Air Force Office of Scientific Research under grant no. FA9550-14-1-0367, Department of Energy SunShot program under award no. DE-EE0005312, and by II?VI Foundation. The work used facilities supported by the NSF MRSEC Program under award no. DMR-14-20703.

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10.1021/jacs.6b03240

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title = "Solution-Processed, Ultrathin Solar Cells from CdCl3--Capped CdTe Nanocrystals: The Multiple Roles of CdCl3- Ligands",

abstract = "Solution-processed CdTe solar cells using CdTe nanocrystal (NC) ink may offer an economically viable route for large-scale manufacturing. Here we design a new CdCl3--capped CdTe NC ink by taking advantage of novel surface chemistry. In this ink, CdCl3- ligands act as surface ligands, sintering promoters, and dopants. Our solution chemistry allows obtaining very thin continuous layers of high-quality CdTe which is challenging for traditional vapor transport methods. Using benign solvents, in air, and without additional CdCl2 treatment, we obtain a well-sintered CdTe absorber layer from the new ink and demonstrate thin-film solar cells with power conversion efficiency over 10\%, a record efficiency for sub-400 nm thick CdTe absorber layer.",

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AU - Talapin, Dmitri V.

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AB - Solution-processed CdTe solar cells using CdTe nanocrystal (NC) ink may offer an economically viable route for large-scale manufacturing. Here we design a new CdCl3--capped CdTe NC ink by taking advantage of novel surface chemistry. In this ink, CdCl3- ligands act as surface ligands, sintering promoters, and dopants. Our solution chemistry allows obtaining very thin continuous layers of high-quality CdTe which is challenging for traditional vapor transport methods. Using benign solvents, in air, and without additional CdCl2 treatment, we obtain a well-sintered CdTe absorber layer from the new ink and demonstrate thin-film solar cells with power conversion efficiency over 10%, a record efficiency for sub-400 nm thick CdTe absorber layer.

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Solution-Processed, Ultrathin Solar Cells from CdCl₃^--Capped CdTe Nanocrystals: The Multiple Roles of CdCl₃^- Ligands

Abstract

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