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

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 dots (CQDs)-based solar cells. The molecular dynamics-based theoretical studies prove that the hydro/oxo-phobic properties of the HSL serve to efficiently passivate the CQDs solid. Furthermore, the robust and outstanding electrical properties of the HSL, simultaneously ensures a high power conversion efficiency (PCE) and increases the stability performance of CQDs-based solar cells. As a result, a best PCE of 11.7 % in a lead sulfide (PbS)-based CQDs solar cell is achieved and over 90% of initial performance is ensured after 1 year storage under ambient conditions.

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Publication details

The article was received on 07 Nov 2017, accepted on 08 May 2018 and first published on 10 May 2018


Article type: Paper
DOI: 10.1039/C7EE03184J
Citation: Energy Environ. Sci., 2018, Accepted Manuscript
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    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, Accepted Manuscript , DOI: 10.1039/C7EE03184J

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