Anisotropy in a 2D Perovskite Ferroelectric Drives Self-Powered Polarization-Sensitive Photoresponse for Ultraviolet Solar-Blind Polarized-Light Detection.
Angew Chem Int Ed Engl
; 61(26): e202205030, 2022 Jun 27.
Article
em En
| MEDLINE
| ID: mdl-35470531
ABSTRACT
Polarized-light detection in the deep ultraviolet solar-blind region is indispensable for optoelectronic applications. 2D hybrid perovskite ferroelectrics with inherent anisotropy and bulk photovoltaic effect (BPVE) have become a robust candidate in this portfolio. We here report a wide band-gap 2D perovskite ferroelectric, (isobutylammonium)2 (methylamium)Pb2 Cl7 (1), in which the BPVE behaves as self-driving source for solar-blind ultraviolet polarized-light detection. It exhibits a large dichroism ratio (≈15.7) and superior BPVE-directed photocurrent (≈3.6â
µA cm-2 , under 266â
nm). These attributes facilitate excellent self-powered polarized-light detection of high on/off contrast (≈103 ) and polarization ratio (≈2.5), beyond those of inorganic oxides (e.g., ZnO, 1.47; GaN, 1.38). This study highlights potential of 2D perovskite ferroelectrics for new optoelectronic application.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Ano de publicação:
2022
Tipo de documento:
Article