Evidence map›Paper›PMID 42243374›Full record

ArticleScientific reports2026

Photo-activated charge transport and exciton dynamics in Cs₂NaInCl₆ double perovskite.

Fahad K Alshammari, Abdullah A Alatawi, Achref Jebnouni, Amjad Salamah Aljaloud, Turki Alkathiri, Ahmed F Almutairi, Bandar F Alsaleh, Mohamed Bouzidi, Mohamed Ben Bechir

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Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Fahad K AlshammariDepartment of Physics, College of Science, University of Ha'il, P.O. Box 2440, Ha'il, Saudi Arabia.
Abdullah A AlatawiKing Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh, 11442, Saudi Arabia.
Achref JebnouniMedical Surgical Nursing Department, College of Nursing, University of Ha'il, Ha'il, Saudi Arabia.
Amjad Salamah AljaloudDepartment of Physics, College of Science, University of Ha'il, P.O. Box 2440, Ha'il, Saudi Arabia.
Turki AlkathiriDepartment of Electrical Engineering, College of Engineering, Al-Baha University, P.O. Box 65799, Albaha, Saudi Arabia. talkathiri@bu.edu.sa.
Ahmed F AlmutairiDepartment of Mechanical Engineering, College of Engineering at Yanbu, Taibah University, Yanbu Al-Bahr, 41911, Saudi Arabia.
Bandar F AlsalehDepartment of Physics, College of Science, University of Ha'il, P.O. Box 2440, Ha'il, Saudi Arabia.
Mohamed BouzidiDepartment of Physics, College of Science, University of Ha'il, P.O. Box 2440, Ha'il, Saudi Arabia.
Mohamed Ben BechirLaboratory of Spectroscopic and Optical Characterization of Materials (LaSCOM), Faculty of Sciences, University of Sfax, BP1171, 3000, Sfax, Tunisia. mohamedbenbechir@hotmail.com.

Funding

University of Hail RG-25 097
6 · The paper itself

Abstract

On account of their environmentally-benign composition and structural stability, lead-free halide double perovskites have drawn increasing attention. Even though the charge-transport behavior of Cs₂NaInCl₆, one of these perovskites, remains poorly understood under illumination, it shows strong self-trapped exciton (STE) emission. Through a combined optical and electrical approach, this work investigates the interplay between electrical transport and exciton dynamics. With a wide bandgap and intrinsic STE-mediated blue emission, a highly crystalline cubic phase is confirmed by the optical and structural analyses. Multi-timescale photoinduced relaxation dynamics associated with recombination processes, lattice relaxation and exciton localization are inferred primarily from TRPL measurements and qualitatively supported by complementary transient absorption observations. Current-voltage measurements, dielectric analysis and complementary impedance spectroscopy evidence that illumination significantly reduces bulk resistance, enhances dielectric polarization and induces persistent photoconductivity. While the optical response is governed by STEs, the results indicate that photo-generated carriers dominate charge transport with an indirect influence of exciton dynamics through trap-state modulation. New insight into the optoelectronic functionality of lead-free double perovskites is provided through a physically-consistent framework proposed to correlate macroscopic transport properties with microscopic excitonic behavior.

Indexed as

AC and DC transportExciton–phonon couplingLead-free double perovskitePhotoluminescence dynamicsSelf-trapped excitons (STEs)Wide bandgap semiconductor

Identifiers

PMID42243374
PMCPMC13478166

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