Mechanochemical Synthesis of High-Entropy Perovskite toward Highly Sensitive and Stable X-ray Flat-Panel Detectors

© 2023 Wiley-VCH GmbH..

Perovskites are attracting attention for optoelectronic devices. Despite their promise, the large-scale synthesis of perovskite materials with exact stoichiometry, especially high-entropy perovskites, has been a major challenge. Moreover, the difficulty in stoichiometry control also hinders the development of perovskite X-ray flat-panel detectors. Previous reports all employed simple MAPbI3 as the active layer, while the performance still falls short of optimized single-crystal-based single-pixel detectors. Herein, a scalable and universal strategy of a mechanochemical method is adopted to synthesize stoichiometric high-entropy perovskite powders with high quality and high quantity (>1 kg per batch). By utilizing these stoichiometric perovskites, the first FA0.9 MA0.05 Cs0.05 Pb(I0.9 Br0.1 )3 -based X-ray flat-panel detector with low trap density and large mobility-lifetime product (7.5 × 10-3 cm2 V-1 ) is reported. The assembled panel detector exhibits close-to-single-crystal performance (high sensitivity of 2.1 × 104 µC Gyair -1 cm-2 and ultralow detection limit of 1.25 nGyair s-1 ), high spatial resolution of 0.46 lp/pixel, as well as excellent thermal robustness under industrial standards. The high performance in the high-entropy perovskite-based X-ray FPDs has the potential to facilitate the development of new-generation X-ray-detection systems.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:35

Enthalten in:

Advanced materials (Deerfield Beach, Fla.) - 35(2023), 29 vom: 18. Juli, Seite e2301406

Sprache:

Englisch

Beteiligte Personen:

Wu, Haodi [VerfasserIn]
Chen, Xu [VerfasserIn]
Song, Zihao [VerfasserIn]
Zhang, Ao [VerfasserIn]
Du, Xinyuan [VerfasserIn]
He, Xin [VerfasserIn]
Wang, Hanqi [VerfasserIn]
Xu, Ling [VerfasserIn]
Zheng, Zhiping [VerfasserIn]
Niu, Guangda [VerfasserIn]
Tang, Jiang [VerfasserIn]

Links:

Volltext

Themen:

High-entropy perovskites
Journal Article
Mechanochemistry
X-ray flat-panel detectors

Anmerkungen:

Date Revised 20.07.2023

published: Print-Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.1002/adma.202301406

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM355270307