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Title: Spacer Cations Dictate Photoinduced Phase Segregation in 2D Mixed Halide Perovskites

Journal Article · · ACS Energy Letters

The spacer cation in two-dimensional (2D) Ruddlesden–Popper lead halide perovskites dictates photoinduced phase segregation. Halide ion segregation under steady-state irradiation of single-layer (n = 1) 2D perovskites is seen when butylammonium (BA) is used as the spacer cation, whereas it is essentially absent when BA is replaced with phenethylammonium (PEA).

Research Organization:
University of Notre Dame, IN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FC02-04ER15533; SC0014334
OSTI ID:
1830763
Alternate ID(s):
OSTI ID: 1909216
Journal Information:
ACS Energy Letters, Vol. 6, Issue 7; ISSN 2380-8195
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (25)

Efficient Visible Quasi-2D Perovskite Light-Emitting Diodes journal June 2016
Two-dimensional halide perovskite lateral epitaxial heterostructures journal April 2020
The 2D Halide Perovskite Rulebook: How the Spacer Influences Everything from the Structure to Optoelectronic Device Efficiency journal January 2021
Exciton diffusion in two-dimensional metal-halide perovskites journal April 2020
One-Year stable perovskite solar cells by 2D/3D interface engineering journal June 2017
Electron–phonon interaction in efficient perovskite blue emitters journal May 2018
Reversible photo-induced trap formation in mixed-halide hybrid perovskites for photovoltaics journal January 2015
Ligand-Stabilized Reduced-Dimensionality Perovskites journal February 2016
Minimising efficiency roll-off in high-brightness perovskite light-emitting diodes journal February 2018
A Victim of Halide Ion Segregation. How Light Soaking Affects Solar Cell Performance of Mixed Halide Lead Perovskites journal July 2017
Two-Dimensional Hybrid Halide Perovskites: Principles and Promises journal November 2018
Role of the spacer cation in the growth and crystal orientation of two-dimensional perovskites journal January 2021
Suppressed Halide Ion Migration in 2D Lead Halide Perovskites journal April 2020
Layer-by-layer anionic diffusion in two-dimensional halide perovskite vertical heterostructures journal February 2021
Nanoscale Phase Segregation in Supramolecular π-Templating for Hybrid Perovskite Photovoltaics from NMR Crystallography journal January 2021
Iodine (I) Expulsion at Photoirradiated Mixed Halide Perovskite Interface. Should I Stay or Should I Go? journal May 2020
How Interplay between Photo and Thermal Activation Dictates Halide Ion Segregation in Mixed Halide Perovskites journal November 2019
Ruddlesden–Popper Hybrid Lead Iodide Perovskite 2D Homologous Semiconductors journal April 2016
Lattice Compression Increases the Activation Barrier for Phase Segregation in Mixed-Halide Perovskites journal September 2020
Organic-Inorganic Hybrid Materials as Semiconducting Channels in Thin-Film Field-Effect Transistors journal October 1999
Anion Exchange of Ruddlesden–Popper Lead Halide Perovskites Produces Stable Lateral Heterostructures journal March 2021
Suppressed Ion Migration in Low-Dimensional Perovskites journal June 2017
TiO 2 -Assisted Halide Ion Segregation in Mixed Halide Perovskite Films journal February 2020
Tracking Iodide and Bromide Ion Segregation in Mixed Halide Lead Perovskites during Photoirradiation journal June 2016
Two-Dimensional Lead(II) Halide-Based Hybrid Perovskites Templated by Acene Alkylamines: Crystal Structures, Optical Properties, and Piezoelectricity journal July 2017