We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Anisotropy in a 2D Perovskite Ferroelectric Drives Self‐Powered Polarization‐Sensitive Photoresponse for Ultraviolet Solar‐Blind Polarized‐Light Detection.
- Authors
Lu, Lei; Weng, Wen; Ma, Yu; Liu, Yi; Han, Shiguo; Liu, Xitao; Xu, Haojie; Lin, Wenxiong; Sun, Zhihua; Luo, Junhua
- 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)Pb2Cl7 (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 (≈3.6 μA cm−2, under 266 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.
- Subjects
PHOTOVOLTAIC effect; ANISOTROPY; PEROVSKITE; OXIDE minerals; FERROELECTRIC crystals; DICHROISM; ZINC oxide
- Publication
Angewandte Chemie, 2022, Vol 134, Issue 26, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202205030