CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume PC12881 > Article
Presentation
9 March 2024 Polaron vibronic progression shapes the optical response of 2D perovskites
Mateusz Dyksik
Author Affiliations +
Proceedings Volume PC12881, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XIII; PC128810E (2024) https://doi.org/10.1117/12.3003971
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
The optical response of 2D layered perovskites is composed of multiple equally-spaced spectral features, often interpreted as phonon replicas, separated by an energy Δ ≃ 15−40 meV, depending upon the compound. We show that the characteristic energy spacing, seen in both absorption and emission, is correlated with a substantial scattering response above ≃200 cm−1 (≃25 meV) observed in resonant Raman. This peculiar high-frequency signal, which dominates both Stokes and anti-Stokes regions of the scattering spectra, possess the characteristic spectral fingerprints of polarons. Notably, its spectral position is shifted away from the Rayleigh line, with a tail on the high energy side. The internal structure of the polaron consists of a series of equidistant signals separated by 25-32 cm−1 (3-4 meV), depending upon the compound, forming a polaron vibronic progression. The observed progression is characterized by a large Huang-Rhys factor (S >6) for all of the 2D layered perovskites investigated here, indicative of a strong charge carrier – lattice coupling.
Conference Presentation
© (2024) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Mateusz Dyksik "Polaron vibronic progression shapes the optical response of 2D perovskites", Proc. SPIE PC12881, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XIII, PC128810E (9 March 2024); https://doi.org/10.1117/12.3003971
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
;
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Perovskite
Polarons
Raman spectroscopy
Raman scattering
Absorption spectrum
Electrical properties
Semiconductors
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top