Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Enhancing Two-Dimensional Electronic Spectroscopy for Layered Halide Perovskites

Ramesh, Sankaran LU orcid ; Feng, Minjun ; Furuhashi, Tomoki and Sum, Tze Chien (2023) In ACS Photonics 10(12). p.4456-4464
Abstract

The photophysics of layered halide perovskites reveals a rich disposition of exciton behavior. Two-dimensional electronic spectroscopy (2DES) is a powerful technique for investigating such excitonic interactions and dynamics. However, the wide spectral range of layered perovskites presents a challenge in studies utilizing conventional 2DES setups to simultaneously probe their interacting excitonic states. Herein, we put forward a versatile 2DES setup employing a hollow-core fiber compressor (HCFC) to generate stable and optimized broadband laser pulses (6 fs) covering a spectral range of 500-950 nm. 2D spectra with high temporal and spectral resolution are possible even with a pulse-shaper-based commercial 2DES setup. Application to a... (More)

The photophysics of layered halide perovskites reveals a rich disposition of exciton behavior. Two-dimensional electronic spectroscopy (2DES) is a powerful technique for investigating such excitonic interactions and dynamics. However, the wide spectral range of layered perovskites presents a challenge in studies utilizing conventional 2DES setups to simultaneously probe their interacting excitonic states. Herein, we put forward a versatile 2DES setup employing a hollow-core fiber compressor (HCFC) to generate stable and optimized broadband laser pulses (6 fs) covering a spectral range of 500-950 nm. 2D spectra with high temporal and spectral resolution are possible even with a pulse-shaper-based commercial 2DES setup. Application to a representative two-phase Ruddlesden-Popper perovskite thin film reveals well-defined signals at the diagonal and off-diagonal positions, indicative of exciton delocalization between the two transitions. Our straightforward modification of a commercial 2DES setup extends its capabilities to investigate the large family of layered perovskites currently under intense scrutiny in the development of perovskite optoelectronics.

(Less)
Please use this url to cite or link to this publication:
author
; ; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
delocalization, hollow-core fiber, pulse shaper, Ruddlesden−Popper, spacer cation, supercontinuum
in
ACS Photonics
volume
10
issue
12
pages
9 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85180122573
ISSN
2330-4022
DOI
10.1021/acsphotonics.3c01327
language
English
LU publication?
no
id
10d2d347-e436-48e2-89bb-8f7f8049d451
date added to LUP
2023-12-30 09:57:03
date last changed
2024-02-12 07:58:07
@article{10d2d347-e436-48e2-89bb-8f7f8049d451,
  abstract     = {{<p>The photophysics of layered halide perovskites reveals a rich disposition of exciton behavior. Two-dimensional electronic spectroscopy (2DES) is a powerful technique for investigating such excitonic interactions and dynamics. However, the wide spectral range of layered perovskites presents a challenge in studies utilizing conventional 2DES setups to simultaneously probe their interacting excitonic states. Herein, we put forward a versatile 2DES setup employing a hollow-core fiber compressor (HCFC) to generate stable and optimized broadband laser pulses (6 fs) covering a spectral range of 500-950 nm. 2D spectra with high temporal and spectral resolution are possible even with a pulse-shaper-based commercial 2DES setup. Application to a representative two-phase Ruddlesden-Popper perovskite thin film reveals well-defined signals at the diagonal and off-diagonal positions, indicative of exciton delocalization between the two transitions. Our straightforward modification of a commercial 2DES setup extends its capabilities to investigate the large family of layered perovskites currently under intense scrutiny in the development of perovskite optoelectronics.</p>}},
  author       = {{Ramesh, Sankaran and Feng, Minjun and Furuhashi, Tomoki and Sum, Tze Chien}},
  issn         = {{2330-4022}},
  keywords     = {{delocalization; hollow-core fiber; pulse shaper; Ruddlesden−Popper; spacer cation; supercontinuum}},
  language     = {{eng}},
  number       = {{12}},
  pages        = {{4456--4464}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{ACS Photonics}},
  title        = {{Enhancing Two-Dimensional Electronic Spectroscopy for Layered Halide Perovskites}},
  url          = {{http://dx.doi.org/10.1021/acsphotonics.3c01327}},
  doi          = {{10.1021/acsphotonics.3c01327}},
  volume       = {{10}},
  year         = {{2023}},
}