Direct Observation of Competition between Amplified Spontaneous Emission and Auger Recombination in Quasi-Two-Dimensional Perovskites

2020 ◽  
Vol 11 (14) ◽  
pp. 5734-5740 ◽  
Author(s):  
Minghuan Cui ◽  
Chaochao Qin ◽  
Yuanzhi Jiang ◽  
Mingjian Yuan ◽  
Liuhong Xu ◽  
...  
Keyword(s):  
Spontaneous Emission ◽  
Direct Observation ◽  
Auger Recombination ◽  
Amplified Spontaneous Emission ◽  
Two Dimensional

scholarly journals A dual-phase architecture for efficient amplified spontaneous emission in lead iodide perovskites

2016 ◽  
Vol 4 (21) ◽  
pp. 4630-4633 ◽  
Author(s):  
Stefanie Neutzner ◽  
Ajay Ram Srimath Kandada ◽  
Guglielmo Lanzani ◽  
Annamaria Petrozza
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Domain Structure ◽  
Phase Transition Temperature ◽  
Spontaneous Emission ◽  
Auger Recombination ◽  
Amplified Spontaneous Emission ◽  
Dual Phase ◽  
Lead Iodide

We report a way to overcome Auger recombination in lead iodide perovskites by investigating the domain structure forming below the phase transition temperature.

Amplified spontaneous emission in thin films of quasi-2D BA3MA3Pb5Br16 lead halide perovskites

Nanoscale ◽  
2021 ◽  
Author(s):  
Maria Luisa De Giorgi ◽  
A. Creti ◽  
Maria-Grazia La-Placa ◽  
Pablo P. Boix ◽  
Henk J. Bolink ◽  
...  
Keyword(s):  
Thin Films ◽  
Spontaneous Emission ◽  
Three Dimensional ◽  
Amplified Spontaneous Emission ◽  
Two Dimensional ◽  
New Class ◽  
Improved Stability ◽  
Halide Perovskites ◽  
Lead Halide

Quasi-2D (two-dimensional) hybrid perovskites are emerging as a new class of materials with high photoluminescence yield and improved stability compared to their three-dimensional (3D) counterparts. Nevertheless, despite their outstanding emission...

scholarly journals Electrically control amplified spontaneous emission in colloidal quantum dots

2019 ◽  
Vol 5 (10) ◽  
pp. eaav3140 ◽  
Author(s):  
Junhong Yu ◽  
Sushant Shendre ◽  
Weon-kyu Koh ◽  
Baiquan Liu ◽  
Mingjie Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Spontaneous Emission ◽  
Auger Recombination ◽  
Low Cost ◽  
Amplified Spontaneous Emission ◽  
Edge State ◽  
Equation Model ◽  
Colloidal Quantum Dots ◽  
Lasing Threshold ◽  
Light Amplification

Colloidal quantum dots (CQDs) are highly promising materials for light amplification thanks to their efficient photoluminescence, tunable emission wavelength and low-cost synthesis. Unfortunately, CQDs are suffering from band-edge state degeneracy which demands multiple excitons to achieve population inversion. As a result, non-radiative Auger recombination increases the lasing threshold and limits the gain lifetime. Here, benefiting from the negative charging, we demonstrate that the amplified spontaneous emission (ASE) threshold is controllable in a device where CQD film is exposed to an external electric field. Specifically, singly charged CQDs lower the threshold due to the preexisting electron in the conduction band, while strongly enhanced Auger recombination in doubly charged CQDs stymies the ASE. Experimental results and kinetic equation model show that ASE threshold reduces 10% even if our device only charges ~17% of the CQD population. Our results open new possibilities for controlling exciton recombination dynamics and achieving electrically pumped CQD lasers.

Effect of Molecular Morphology on Amplified Spontaneous Emission of Bis-Styrylbenzene Derivatives

2009 ◽  
Vol 21 (40) ◽  
pp. 4034-4038 ◽  
Author(s):  
Ryota Kabe ◽  
Hajime Nakanotani ◽  
Tomo Sakanoue ◽  
Masayuki Yahiro ◽  
Chihaya Adachi
Keyword(s):  
Spontaneous Emission ◽  
Amplified Spontaneous Emission ◽  
Molecular Morphology
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