Distinguishing Energy- and Charge-Transfer Processes in Layered Perovskite Quantum Wells with Two-Dimensional Action Spectroscopies

2020 ◽  
Vol 11 (12) ◽  
pp. 4570-4577 ◽  
Author(s):  
Ninghao Zhou ◽  
Zhenyu Ouyang ◽  
Jun Hu ◽  
Olivia F. Williams ◽  
Liang Yan ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Quantum Wells ◽  
Layered Perovskite ◽  
Two Dimensional ◽  
Transfer Processes

scholarly journals Two-dimensional hybrid perovskites sustaining strong polariton interactions at room temperature

2019 ◽  
Vol 5 (5) ◽  
pp. eaav9967 ◽  
Author(s):  
A. Fieramosca ◽  
L. Polimeno ◽  
V. Ardizzone ◽  
L. De Marco ◽  
M. Pugliese ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Degrees Of Freedom ◽  
Room Temperature ◽  
Optical Cavity ◽  
Oscillator Strengths ◽  
Layered Perovskite ◽  
Two Dimensional ◽  
Coherent Coupling ◽  
Highly Nonlinear ◽  
Order Of Magnitude

Polaritonic devices exploit the coherent coupling between excitonic and photonic degrees of freedom to perform highly nonlinear operations with low input powers. Most of the current results exploit excitons in epitaxially grown quantum wells and require low-temperature operation, while viable alternatives have yet to be found at room temperature. We show that large single-crystal flakes of two-dimensional layered perovskite are able to sustain strong polariton nonlinearities at room temperature without the need to be embedded in an optical cavity formed by highly reflecting mirrors. In particular, exciton-exciton interaction energies are shown to be spin dependent, remarkably similar to the ones known for inorganic quantum wells at cryogenic temperatures, and more than one order of magnitude larger than alternative room temperature polariton devices reported so far. Because of their easy fabrication, large dipolar oscillator strengths, and strong nonlinearities, these materials pave the way for realization of polariton devices at room temperature.

Electro-active pi-Conjugated Oligomers and Polymers A Molecular Picture of Charge-Transfer Processes

2018 ◽  
Vol 15 (4) ◽  
pp. 388 ◽  
Author(s):  
D. Beljonne ◽  
J. Cornil ◽  
J. L. Brèdas ◽  
V. Coropceanu
Keyword(s):  
Charge Transfer ◽  
Semiconductor Devices ◽  
Conjugated Oligomers ◽  
Transfer Processes ◽  
Pi Conjugated ◽  
Information And Communication ◽  
Inorganic Semiconductor ◽  
Molecular Picture

<span>Inorganic semiconductor devices such as transistors have been instrumental in shaping the development of our society of information and communication. Recently, the electronics and photonics technologies have opened their materials base to organics, in particular p-conjugated oligomers and polymers. The goal with organics-based devices is not necessarily to attain or exceed the level of performance of inorganic semiconductor technologies...</span>

Controllable Synthesis of Ultrathin Layered Transition Metallic Hydroxide/Zeolitic Imidazolate Framework-67 Hybrid Nanosheets for High-Performance Supercapacitors

2021 ◽  
Author(s):  
Chunli Liu ◽  
Yang Bai ◽  
Ji Wang ◽  
Ziming Qiu ◽  
Huan Pang
Keyword(s):  
Charge Transfer ◽  
Energy Conversion ◽  
High Performance ◽  
2D Materials ◽  
Two Dimensional ◽  
Controllable Synthesis ◽  
Zeolitic Imidazolate Framework ◽  
Fast Charge ◽  
Energy Conversion And Storage ◽  
And Storage

Two-dimensional (2D) materials with structures having diverse features are promising for application in energy conversion and storage. A stronger layered orientation can guarantee fast charge transfer along the 2D planes...

scholarly journals Anisotropic 2D excitons unveiled in organic–inorganic quantum wells

2021 ◽  
Author(s):  
Lorenzo Maserati ◽  
Sivan Refaely-Abramson ◽  
Christoph Kastl ◽  
Christopher T. Chen ◽  
Nicholas J. Borys ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Crystalline Polymer ◽  
Binding Energies ◽  
Two Dimensional ◽  
Metal Chalcogenide

Hybrid layered metal chalcogenide crystalline polymer hosts strongly anisotropic two-dimensional excitons with large binding energies.

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