Enhancing Two-Dimensional Electronic Spectroscopy for Layered Halide Perovskites
(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.
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- author
- Ramesh, Sankaran LU ; Feng, Minjun ; Furuhashi, Tomoki and Sum, Tze Chien
- publishing date
- 2023
- 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}}, }