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Issue 8, 2018
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A hydro/oxo-phobic top hole-selective layer for efficient and stable colloidal quantum dot solar cells

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Abstract

In this report, we explore the underlying mechanisms by which doped organic thin films as a top hole-selective layer (HSL) improve the performance and stability of colloidal quantum dot (CQD)-based solar cells. Molecular dynamics-based theoretical studies prove that the hydro/oxo-phobic properties of the HSL serve to efficiently passivate the CQD solid. Furthermore, the robust and outstanding electrical properties of the HSL, simultaneously ensure a high power conversion efficiency (PCE) and increase the stability performance of CQD-based solar cells. As a result, a best PCE of 11.7% in a lead sulfide (PbS)-based CQD solar cell is achieved and over 90% of the initial performance is retained after 1 year storage under ambient conditions.

Graphical abstract: A hydro/oxo-phobic top hole-selective layer for efficient and stable colloidal quantum dot solar cells

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Article information


Submitted
07 Nov 2017
Accepted
08 May 2018
First published
10 May 2018

Energy Environ. Sci., 2018,11, 2078-2084
Article type
Paper

A hydro/oxo-phobic top hole-selective layer for efficient and stable colloidal quantum dot solar cells

S. Baek, S. Lee, J. H. Song, C. Kim, Y. Ha, H. Shin, H. Kim, S. Jeong and J. Lee, Energy Environ. Sci., 2018, 11, 2078
DOI: 10.1039/C7EE03184J

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