Superradiative decay and enhanced optical nonlinearity of low-dimensional excitons

1990 ◽  
Author(s):  
Eiichi Hanamura
Keyword(s):  
Optical Nonlinearity ◽  
Low Dimensional

scholarly journals Experimental Progress of Semiconductor Nanomaterials

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Guan Weiqing
Keyword(s):  
High Speed ◽  
Optical Switch ◽  
Luminescent Properties ◽  
Optical Nonlinearity ◽  
Preparation Methods ◽  
Contemporary Science ◽  
Semiconductor Nanomaterials ◽  
Particle Size And Morphology ◽  
Size And Morphology ◽  
Low Dimensional

The research of semiconductor nanomaterials is the forefront of contemporary science and technology. Because ofits optical nonlinearity and luminescent properties diff erent from the bulk materials, it has great application prospectin the future optical switch, optical storage, light fast conversion and ultra-high speed processing. By arranging thecommonly used low-dimensional semiconductor nanomaterials preparation methods and methods of characterization,then compare them, it can helps to open up ideas and aids for in-depth thinking. In this paper, the preparation methodsof laser ablation, carbon nanotube template, molten salt, solution-liquid-solid method and template electrochemicalmethod are introduced. The characterization method is analyzed from particle size and morphology, composition andstructure analysis, surface interface analysis and several other aspects.

Enhanced second‐order optical nonlinearity using inter‐ and intra‐band transitions in low‐dimensional semiconductors

1992 ◽  
Vol 61 (4) ◽  
pp. 399-401 ◽  
Author(s):  
Akira Shimizu ◽  
Makoto Kuwata‐Gonokami ◽  
Hiroyuki Sakaki
Keyword(s):  
Optical Nonlinearity ◽  
Second Order ◽  
Low Dimensional

scholarly journals High optical nonlinearity in low-dimensional halide perovskite polycrystalline films

2020 ◽  
Vol 28 (17) ◽  
pp. 24919 ◽  
Author(s):  
Wei-Yun Liang ◽  
Fangzhou Liu ◽  
Yu-Jung Lu ◽  
Jasminka Popović ◽  
Aleksandra Djurišić ◽  
...  
Keyword(s):  
Optical Nonlinearity ◽  
Polycrystalline Films ◽  
Halide Perovskite ◽  
Low Dimensional

Thermoelectric Properties of PbSr(Se,Te)-Based Low Dimensional Structures

2000 ◽  
Vol 626 ◽  
Author(s):  
Harald Beyer ◽  
Joachim Nurnus ◽  
Harald Böttner ◽  
Armin Lambrecht ◽  
Lothar Schmitt ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Properties ◽  
Power Factor ◽  
Evaluation Method ◽  
Interband Transition ◽  
Multiple Quantum Well ◽  
Calculated Data ◽  
Multiple Quantum ◽  
Ir Transmission ◽  
Low Dimensional

ABSTRACTThermoelectric properties of low dimensional structures based on PbTe/PbSrTe-multiple quantum-well (MQW)-structures with regard to the structural dimensions, doping profiles and levels are presented. Interband transition energies and barrier band-gap are determined from IR-transmission spectra and compared with Kronig-Penney calculations. The influence of the data evaluation method to obtain the 2D power factor will be discussed. The thermoelectrical data of our layers show a more modest enhancement in the power factor σS2 compared with former publications and are in good agreement with calculated data from Broido et al. [5]. The maximum allowed doping level for modulation doped MQW structures is determined. Thermal conductivity measurements show that a ZT enhancement can be achieved by reducing the thermal conductivity due to interface scattering. Additionally promising lead chalcogenide based superlattices for an increased 3D figure of merit are presented.

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