Projects per year
Abstract
A confined electronic system can host a wide variety of fascinating electronic, magnetic, valleytronic and photonic phenomena due to its reduced symmetry and quantum confinement effect. For the recently emerging one-dimensional van der Waals (1D vdW) materials with electrons confined in 1D sub-units, an enormous variety of intriguing physical properties and functionalities can be expected. Here, we demonstrate the coexistence of giant linear/nonlinear optical anisotropy and high emission yield in fibrous red phosphorus (FRP), an exotic 1D vdW semiconductor with quasi-flat bands and a sizeable bandgap in the visible spectral range. The degree of photoluminescence (third-order nonlinear) anisotropy can reach 90% (86%), comparable to the best performance achieved so far. Meanwhile, the photoluminescence (third-harmonic generation) intensity in 1D vdW FRP is strong, with quantum efficiency (third-order susceptibility) four (three) times larger than that in the most well-known 2D vdW materials (e.g., MoS2). The concurrent realization of large linear/nonlinear optical anisotropy and emission intensity in 1D vdW FRP paves the way towards transforming the landscape of technological innovations in photonics and optoelectronics.
Original language | English |
---|---|
Article number | 4822 |
Number of pages | 10 |
Journal | Nature Communications |
Volume | 12 |
Issue number | 1 |
DOIs | |
Publication status | Published - 10 Aug 2021 |
MoE publication type | A1 Journal article-refereed |
Fingerprint
Dive into the research topics of 'Giant anisotropic photonics in the 1D van der Waals semiconductor fibrous red phosphorus'. Together they form a unique fingerprint.-
-
FEMTOCHIP: FEMTOSECOND LASER ON A CHIP
Sun, Z. (Principal investigator)
01/03/2021 → 29/02/2024
Project: EU_HEFWP
-
FAST: Ultrafast Data Production with Broadband Photodetectors for Active Hyperspectral Space Imaging
Sun, Z. (Principal investigator)
01/01/2021 → 31/12/2023
Project: RCF Academy Project targeted call
Equipment
-
-
-
OtaNano - Nanomicroscopy Center
Seitsonen, J. (Manager) & Rissanen, A. (Other)
OtaNanoFacility/equipment: Facility
Press/Media
-
One-Dimensional Fibrous Red Phosphorous Glows in Unexpected Ways
Lahtinen, J., Sun, Z. & Yao, L.
28/08/2021
1 item of Media coverage
Press/Media: Media appearance