Unveiling Mechanism of Temperature‐Dependent Self‐Trapped Exciton Emission in 1D Hybrid Organic–Inorganic Tin Halide for Advanced Thermography

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2FCZ______%3A_____%2F24%3AN0000040" target="_blank" >RIV/CZ______:_____/24:N0000040 - isvavai.cz</a>

Result on the web

<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202402061" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202402061</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adom.202402061" target="_blank" >10.1002/adom.202402061</a>

Result language

angličtina

Original language name

Unveiling Mechanism of Temperature‐Dependent Self‐Trapped Exciton Emission in 1D Hybrid Organic–Inorganic Tin Halide for Advanced Thermography

Original language description

Lead-free hybrid metal halide phosphors/crystals showing self-trapped exciton (STE) emission have been recently explored for thermography due to the strong temperature dependence of their photoluminescence (PL) lifetime (tau). However, realizing high-spatial-resolution thermography using polycrystalline powders or crystals presents a challenge. Moreover, the underlying mechanism of temperature-dependent STE remains elusive. Herein, a homogeneous 1D ODASn2I6 (ODA, 1,8-octanediamine) nm-scale thin film exhibiting efficient STE emission is investigated. The PL decay shows a strong temperature dependence from 275 K (tau approximate to 1.31 mu s) to 350 K (tau approximate to 0.65 mu s) yielding a thermal sensitivity of 0.014 K-1. By employing temperature-dependent transient absorption spectroscopy, detailed information is obtained about the relaxation processes prior to the STE formation. Simultaneous analyses of steady-state and time-resolved spectroscopies lead to a self-consistent model where the thermally activated phonon-assisted nonradiative pathway explains the temperature dependence of the PL lifetime via a conical intersection between the ground state and STE potential energy surfaces. Finally, a discernible 50 ns variation in PL lifetimes across different heated regimes over a distance of 1.15 mm is successfully demonstrated with fluorescence lifetime imaging microscopy, underscoring the substantial potential of ODASn2I6 thin film for high-spatial-resolution thermography. This work demonstrates a 1D ODASn2I6 thin film showing strongly thermal-quenched self-trapped exciton emission (STE) above 275 K. By using ultrafast spectroscopy, the temperature-dependent formation and relaxation mechanism of such STE is unveiled. In addition, fluorescence lifetime imaging measurements illustrate that ODASn2I6 thin film with a specific sensitivity of 0.014 K-1 is a significant potential candidate for high-spatial-resolution thermography. image

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10406 - Analytical chemistry

Project

<a href="/en/project/GM21-09692M" target="_blank" >GM21-09692M: Clarifying quantum limits in biomolecules by utilizing entangled photons generated from protein bound cofactor modeled on orange carotenoid protein</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Advanced Optical Materials

ISSN

2195-1071

e-ISSN

—

Volume of the periodical

2024

Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

8

Pages from-to

2402061

UT code for WoS article

001337440600001

EID of the result in the Scopus database

2-s2.0-85206929562