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Recent Advances in Cation-Engineered A3BX6 Metal Halide Perovskite for Enhanced Radiative Transition

Zhou, Xin ; Yin, Hang LU ; Wei, Qinhua ; Chen, Da ; Xue, Dongfeng ; Pullerits, Tönu LU ; Chen, Junsheng and Qin, Laishun (2026) In Research 9.
Abstract

A3BX6 perovskites, a family of vacancy-ordered structures, exhibit diverse luminescence behaviors upon photon, electron, and high-energy excitation, primarily originating from intrinsic self-trapped excitons or dopant-induced electronic transitions. Upon B-site cation engineering, ns2 cations tune intrinsic luminescence, whereas transition-metal and rare-earth dopants activate characteristic d–d, d–f, and f–f transitions, enriching A3BX6 optical diversity.The tunable crystal structure and electronic configuration endow A3BX6 perovskites with exceptional versatility for photoluminescence, electroluminescence, and scintillation applications.This review... (More)

A3BX6 perovskites, a family of vacancy-ordered structures, exhibit diverse luminescence behaviors upon photon, electron, and high-energy excitation, primarily originating from intrinsic self-trapped excitons or dopant-induced electronic transitions. Upon B-site cation engineering, ns2 cations tune intrinsic luminescence, whereas transition-metal and rare-earth dopants activate characteristic d–d, d–f, and f–f transitions, enriching A3BX6 optical diversity.The tunable crystal structure and electronic configuration endow A3BX6 perovskites with exceptional versatility for photoluminescence, electroluminescence, and scintillation applications.This review systematically elucidates how B-site chemistry modulates the structure–property–application relationships in this material family. P-block B-site A3BX6 perovskites exhibit high photoluminescence efficiency, broadband emission, and strong ultraviolet absorption, enabling applications in high-sensitivity photodetectors (1.23 × 1012 Jones), information encryption, and white light-emitting diodes. In comparison, rare-earth-based A3BX6 perovskites enable high-efficiency electroluminescent devices, featuring deep-blue light-emitting diode with an external quantum efficiency of 7.9%. Moreover, they exhibit superior scintillation performance, including high x-ray light yield (88,800 ph/MeV), low x-ray detection limit (63 nGy/s), and notable γ-ray response under 137Cs excitation (47,000 ph/MeV; 4.0% energy resolution). These insights highlight the pivotal role of B-site cation engineering in tailoring luminescence mechanisms and enabling multifunctional A3BX6 perovskites for photonic and radiation applications.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Research
volume
9
article number
1281
publisher
American Association for the Advancement of Science (AAAS)
external identifiers
  • pmid:42158316
  • scopus:105039086697
ISSN
2096-5168
DOI
10.34133/research.1281
language
English
LU publication?
yes
id
b067c31d-c0f0-4527-8a11-5469bf298fc7
date added to LUP
2026-08-28 10:07:17
date last changed
2026-09-11 11:32:30
@article{b067c31d-c0f0-4527-8a11-5469bf298fc7,
  abstract     = {{<p>A<sub>3</sub>BX<sub>6</sub> perovskites, a family of vacancy-ordered structures, exhibit diverse luminescence behaviors upon photon, electron, and high-energy excitation, primarily originating from intrinsic self-trapped excitons or dopant-induced electronic transitions. Upon B-site cation engineering, ns<sup>2</sup> cations tune intrinsic luminescence, whereas transition-metal and rare-earth dopants activate characteristic d–d, d–f, and f–f transitions, enriching A<sub>3</sub>BX<sub>6</sub> optical diversity.The tunable crystal structure and electronic configuration endow A<sub>3</sub>BX<sub>6</sub> perovskites with exceptional versatility for photoluminescence, electroluminescence, and scintillation applications.This review systematically elucidates how B-site chemistry modulates the structure–property–application relationships in this material family. P-block B-site A<sub>3</sub>BX<sub>6</sub> perovskites exhibit high photoluminescence efficiency, broadband emission, and strong ultraviolet absorption, enabling applications in high-sensitivity photodetectors (1.23 × 10<sup>12</sup> Jones), information encryption, and white light-emitting diodes. In comparison, rare-earth-based A<sub>3</sub>BX<sub>6</sub> perovskites enable high-efficiency electroluminescent devices, featuring deep-blue light-emitting diode with an external quantum efficiency of 7.9%. Moreover, they exhibit superior scintillation performance, including high x-ray light yield (88,800 ph/MeV), low x-ray detection limit (63 nGy/s), and notable γ-ray response under <sup>137</sup>Cs excitation (47,000 ph/MeV; 4.0% energy resolution). These insights highlight the pivotal role of B-site cation engineering in tailoring luminescence mechanisms and enabling multifunctional A<sub>3</sub>BX<sub>6</sub> perovskites for photonic and radiation applications.</p>}},
  author       = {{Zhou, Xin and Yin, Hang and Wei, Qinhua and Chen, Da and Xue, Dongfeng and Pullerits, Tönu and Chen, Junsheng and Qin, Laishun}},
  issn         = {{2096-5168}},
  language     = {{eng}},
  publisher    = {{American Association for the Advancement of Science (AAAS)}},
  series       = {{Research}},
  title        = {{Recent Advances in Cation-Engineered A<sub>3</sub>BX<sub>6</sub> Metal Halide Perovskite for Enhanced Radiative Transition}},
  url          = {{http://dx.doi.org/10.34133/research.1281}},
  doi          = {{10.34133/research.1281}},
  volume       = {{9}},
  year         = {{2026}},
}