scholarly journals Folded Acoustic Phonon Modes in Ge/Si Quantum Dot Superlattices With Different Periods

2006 ◽  
Vol 1 (1) ◽  
pp. 86-91 ◽  
Author(s):  
Zheng Yang ◽  
Jian-Lin Liu ◽  
Yi Shi ◽  
You-Dou Zheng ◽  
Kang L. Wang
Keyword(s):  
Quantum Dot ◽  
Acoustic Phonon ◽  
Phonon Modes ◽  
Si Quantum Dot

Optical and acoustic phonon modes in self-organized Ge quantum dot superlattices

2000 ◽  
Vol 76 (5) ◽  
pp. 586-588 ◽  
Author(s):  
J. L. Liu ◽  
G. Jin ◽  
Y. S. Tang ◽  
Y. H. Luo ◽  
K. L. Wang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Acoustic Phonon ◽  
Phonon Modes ◽  
Self Organized ◽  
Ge Quantum Dot

scholarly journals Response to “Comment on ‘Optical and acoustic phonon modes in self-organized Ge quantum dot superlattices’ ” [Appl. Phys. Lett. 78, 1160 (2001)]

2001 ◽  
Vol 78 (8) ◽  
pp. 1162-1163 ◽  
Author(s):  
J. L. Liu ◽  
G. Jin ◽  
Y. S. Tang ◽  
Y. H. Luo ◽  
K. L. Wang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Acoustic Phonon ◽  
Phonon Modes ◽  
Self Organized ◽  
Ge Quantum Dot

scholarly journals Reduction of acoustic-phonon deformation potential in one-dimensional array of Si quantum dot interconnected with tunnel oxides

2005 ◽  
Vol 97 (11) ◽  
pp. 113506 ◽  
Author(s):  
Shigeyasu Uno ◽  
Nobuya Mori ◽  
Kazuo Nakazato ◽  
Nobuyoshi Koshida ◽  
Hiroshi Mizuta
Keyword(s):  
Quantum Dot ◽  
Acoustic Phonon ◽  
Deformation Potential ◽  
One Dimensional ◽  
Dimensional Array ◽  
Si Quantum Dot ◽  
Tunnel Oxides

Photoluminescence enhancement in double Ge/Si quantum dot structures

JETP Letters ◽  
2016 ◽  
Vol 104 (12) ◽  
pp. 823-826 ◽  
Author(s):  
A. F. Zinovieva ◽  
V. A. Zinovyev ◽  
A. I. Nikiforov ◽  
V. A. Timofeev ◽  
A. V. Mudryi ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Si Quantum Dot ◽  
Photoluminescence Enhancement

Efficiency improvement of Si quantum dot solar cells by activation with boron implantation

Solar Energy ◽  
2018 ◽  
Vol 164 ◽  
pp. 89-93 ◽  
Author(s):  
Gyea Young Kwak ◽  
Tae Gun Kim ◽  
Songwoung Hong ◽  
Ansoon Kim ◽  
Man Hyo Ha ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Efficiency Improvement ◽  
Si Quantum Dot ◽  
Quantum Dot Solar Cells ◽  
Boron Implantation

Graphene/Si-Quantum-Dot Heterojunction Diodes Showing High Photosensitivity Compatible with Quantum Confinement Effect

2015 ◽  
Vol 27 (16) ◽  
pp. 2614-2620 ◽  
Author(s):  
Dong Hee Shin ◽  
Sung Kim ◽  
Jong Min Kim ◽  
Chan Wook Jang ◽  
Ju Hwan Kim ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Quantum Confinement ◽  
Quantum Confinement Effect ◽  
Confinement Effect ◽  
Si Quantum Dot ◽  
Heterojunction Diodes ◽  
High Photosensitivity

Quantized Acoustic-Phonon Modes in Metallic Nanowire Structures

2015 ◽  
Vol 44 (12) ◽  
pp. 3019-3022 ◽  
Author(s):  
Hou Yuexia ◽  
Xu Wen ◽  
Hu Jiaguang ◽  
Xiao Yiming
Keyword(s):  
Acoustic Phonon ◽  
Phonon Modes

Guided Acoustic Phonon Modes in Layered Anisotropic Nanowires

2003 ◽  
Author(s):  
Osama M. Mukdadi ◽  
Subhendu K. Datta ◽  
Martin L. Dunn
Keyword(s):  
Thermal Conductivity ◽  
Acoustic Phonon ◽  
Energy Transport ◽  
Bulk Material ◽  
Rectangular Cross Section ◽  
Critical Role ◽  
Acoustic Phonons ◽  
Phonon Modes ◽  
Low Velocity ◽  
Analysis Technique

Acoustic phonons play a critical role in energy transport in nanostructures. The dispersion of acoustic phonons strongly influences thermal conductivity. Recent observations show lower values of thermal conductivity in finite dimensional nanostructures than in the bulk material. In this work, we will present results for guided acoustic phonon modes in (a) a bilayered GaAs-Nb nanowire of rectangular cross section and (b) a trapezoidal Si nanowire. The former has been used for phonon counting in a nanocalorimeter for measuring thermal conductivity and the latter is commonly used in MEMS applications. A semi-analytical finite element (SAFE) analysis technique has been used to investigate the effects of layering, anisotropy, and boundaries on the dispersion of modes of propagation. Many interesting features of group velocities are found that show confinements around the corners, in the low velocity layer, and coupling of the longitudinal and flexural modes. These would strongly influence thermal conductivity and might provide means of nondestrutive evaluation of mechanical properties.

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