Exploring the Stability of Novel Wide Bandgap Perovskites by a Robot Based High Throughput Approach

Chen S, Hou Y, Chen H, Tang X, Langner S, Li N, Stubhan T, Levchuk I, Gu E, Osvet A, Brabec C (2017)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2017

Journal

Advanced Energy Materials Wiley

Article Number: 1701543

URI: http://onlinelibrary.wiley.com/doi/10.1002/aenm.201701543/abstract

DOI: 10.1002/aenm.201701543

Abstract

Currently, lead-based perovskites with mixed multiple cations and hybrid
halides are attracting intense research interests due to their promising
stability and high efficiency. A tremendous amount of 3D and 2D perovskite
compositions and configurations are causing a strong demand for high
throughput synthesis and characterization. Furthermore, wide bandgap
(≈1.75 eV) perovskites as promising top-cell materials for perovskite–silicon
tandem configurations require the screening of different compositions to
overcome photoinduced halide segregation and still yielding a high opencircuit
voltage (Voc). Herein, a home-made high throughput robot setup is
introduced performing automatic perovskite synthesis and characterization.
Subsequently, four kinds of compositions (i.e., cation mixtures of Cs–methylammonium
(MA), Cs– formamidinium (FA), MA–FA, and FA–MA) with an
optical bandgap of ≈1.75 eV are identified as promising device candidates.
For Cs–MA and Cs–FA films it is found that the Br–I phase segregation
indeed can be overcome. Moreover, Cs–MA, MA–FA, and Cs–FA based
devices exhibit an average Voc of 1.17, 1.17, 1.12 V, and their maximum values
approached 1.18, 1.19, 1.14 V, respectively, which are among the highest Voc
(≈1.2 V) values for ≈40% Br perovskite. These findings highlight that the high
throughput approach can effectively and efficiently accelerate the invention of
novel perovskites for advanced applications.

Authors with CRIS profile

Additional Organisation(s)

Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden Exzellenz-Cluster Engineering of Advanced Materials (EAM) Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)

Involved external institutions

Bayerisches Zentrum für Angewandte Energieforschung e.V. (ZAE Bayern)

Germany (DE)

How to cite

APA:

Chen, S., Hou, Y., Chen, H., Tang, X., Langner, S., Li, N.,... Brabec, C. (2017). Exploring the Stability of Novel Wide Bandgap Perovskites by a Robot Based High Throughput Approach. Advanced Energy Materials. https://doi.org/10.1002/aenm.201701543

MLA:

Chen, Shi, et al. "Exploring the Stability of Novel Wide Bandgap Perovskites by a Robot Based High Throughput Approach." Advanced Energy Materials (2017).

BibTeX: Download