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

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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.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2018-08
Language
English
Article Type
Article
Keywords

MOLECULAR-DYNAMICS; SOLIDS; PHOTOVOLTAICS; OXIDE

Citation

ENERGY & ENVIRONMENTAL SCIENCE, v.11, no.8, pp.2078 - 2084

ISSN
1754-5692
DOI
10.1039/C7EE03184J
URI
http://hdl.handle.net/10203/245693
Appears in Collection
EEW-Journal Papers(저널논문)
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