The luminescence study of Bi-doped Cs2AgInCl6 double perovskite. - Open Research Data - Bridge of Knowledge

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The luminescence study of Bi-doped Cs2AgInCl6 double perovskite.

Description

Here, we report a halide precursor acid precipitation method to synthesize Cs2AgIn1−xBixCl6 (x = 0, 0.02, 0.04, 0.08, 0.16, 0.32, 0.64, and 1) microcrystals. Cs2AgInCl6 and Bi derivative double perovskites show broadband white light emission via self-trapped excitons (STEs) and have achieved the highest internal quantum efficiency of up to 52.4% at x = 0.08. Synchrotron X-ray diffraction confirmed the linear increase of lattice parameters and cell volume with Bi3+ substitution at In3+ sites. Absorbance, photocurrent excitation, and photoluminescence excitation spectra are used to observe possible transitions from the valence to the conduction band or free exciton (FE) states as well as transitions within local Bi3+ states. The broadband photoluminescence is quenched via a single nonradiative process with an activation energy ΔE = 1490 cm−1 for Cs2AgIn0.92Bi0.08Cl6. Under normal conditions, we observed STE emission, but applying external pressure alters the electronic structure such that at elevated pressure, the only emission via the FE state is observed. We anticipate that structure, temperature, and pressure-dependent photoluminescence studies will help the future use of a single-source lead-free double perovskite for white light-emitting diode applications.

In that dataset, the raw data of RT excitation, emission, absorption, and photocurrent excitation spectra, decay profiles, and temperature- and pressure- dependence of photoluminescence excitation, photoluminescence, and decay profiles are provided.

Dataset file

Cs2AgInCl6_Bi.rar
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License:
Creative Commons: by 4.0 open in new tab
CC BY
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Details

Year of publication:
2022
Verification date:
2022-03-04
Dataset language:
English
Fields of science:
  • physical sciences (Natural sciences)
DOI:
DOI ID 10.34808/wc17-7f96 open in new tab
Verified by:
No verification

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