Jump to main content
Jump to site search


Two-dimensional perovskite solar cells with high luminescence and ultra-low open-circuit voltage deficit

Author affiliations

Abstract

High luminescence efficiency of the halide perovskite absorber layer in perovskite solar cells (PVSCs) will reduce the open-circuit voltage (Voc) loss and further increase the cell efficiency. Still, while quasi-2D-structure perovskite films exhibit high emissivity in light-emitting devices, quasi-2D PVSCs show severe Voc loss associated with non-radiative recombination. Here we demonstrate how the use of highly luminescent PEA0.2BA1.8MA3Pb4I13 in quasi-2D PVSCs allows, via Cl passivation and heat-light post-co-treatment, a champion external electroluminescence quantum efficiency around 2.3% and a record low Voc deficit of 0.36 eV. To our knowledge, this is the lowest Voc loss for quasi-2D PVSCs and among the lowest for any type of PVSCs. As a result, high performance quasi-2D PVSCs are obtained, with a Voc up to 1.29 V and 15.81% efficiency, showing excellent stability, and retain 98% of the original efficiency after heating at 85 °C for 1590 h. This work paves the way toward highly luminescent and efficient quasi-2D PVSCs.

Graphical abstract: Two-dimensional perovskite solar cells with high luminescence and ultra-low open-circuit voltage deficit

Back to tab navigation

Supplementary files

Article information


Submitted
25 Aug 2020
Accepted
02 Oct 2020
First published
02 Oct 2020

J. Mater. Chem. A, 2020, Advance Article
Article type
Paper

Two-dimensional perovskite solar cells with high luminescence and ultra-low open-circuit voltage deficit

X. Lian, L. Zuo, H. Wu, G. Zhou, C. Lin, H. Zhu, G. Wu, D. Cahen and H. Chen, J. Mater. Chem. A, 2020, Advance Article , DOI: 10.1039/D0TA08359C

Social activity

Search articles by author

Spotlight

Advertisements