Journal Article

FZJ-2020-02042

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spontaneously Self‐Assembly of a 2D/3D Heterostructure Enhances the Efficiency and Stability in Printed Perovskite Solar Cells

Hu, J.Extern* ; Wang, C.Extern* ; Qiu, S.Extern* ; Zhao, Y.Extern* ; Gu, E.Extern* ; Zeng, L.Extern* ; Yang, Y.Extern* ; Li, C.Extern* ; Liu, X.Extern* ; Forberich, K.FZJ* ; Brabec, C.FZJ* ; Nazeeruddin, M. K.Extern* ; Mai, Y. (Corresponding author)Extern* ; Guo, F. (Corresponding author)

2020
Wiley-VCH Weinheim

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Please use a persistent id in citations: http://hdl.handle.net/2128/27238  doi:10.1002/aenm.202000173

Abstract: As perovskite solar cells (PSCs) are highly efficient, demonstration of high‐performance printed devices becomes important. 2D/3D heterostructures have recently emerged as an attractive way to relieving the film inhomogeneity and instability in perovskite devices. In this work, a 2D/3D ensemble with 2D perovskites self‐assembled atop 3D methylammonium lead triiodide (MAPbI3) via a one‐step printing process is shown. A clean and flat interface is observed in the 2D/3D bilayer heterostructure for the first time. The 2D perovskite capping layer significantly suppresses nonradiative charge recombination, resulting in a marked increase in open‐circuit voltage (VOC) of the devices by up to 100 mV. An ultrahigh VOC of 1.20 V is achieved for MAPbI3 PSCs, corresponding to 91% of the Shockley–Queisser limit. Moreover, notable enhancement in light, thermal, and moisture stability is obtained as a result of the protective barrier of the 2D perovskites. These results suggest a viable approach for scalable fabrication of highly efficient perovskite solar cells with enhanced environmental stability.

Keyword(s): Energy (1st) ; Engineering, Industrial Materials and Processing (1st)

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Contributing Institute(s):

1. Helmholtz-Institut Erlangen-Nürnberg Erneuerbare Energien (IEK-11)

Research Program(s):

1. 121 - Solar cells of the next generation (POF3-121) (POF3-121)

Appears in the scientific report 2021

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 20 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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