Two-dimensional warm-electron transport in GaAs andIn1−xGaxAs quantum wells at low temperatures

1991 ◽  
Vol 43 (18) ◽  
pp. 14638-14642 ◽  
Author(s):  
A. Kabasi ◽  
D. Chattopadhyay
Keyword(s):  
Electron Transport ◽  
Quantum Wells ◽  
Low Temperatures ◽  
Two Dimensional

Two dimensional electron transport in modulation-doped In0.53Ga0.47As/AlAs0.56Sb0.44 ultrathin quantum wells

2014 ◽  
Vol 115 (12) ◽  
pp. 123711 ◽  
Author(s):  
Cheng-Ying Huang ◽  
Jeremy J. M. Law ◽  
Hong Lu ◽  
Debdeep Jena ◽  
Mark J. W. Rodwell ◽  
...  
Keyword(s):  
Electron Transport ◽  
Quantum Wells ◽  
Two Dimensional ◽  
Dimensional Electron

PHOTOLUMINESCENCE STUDIES OF POSITIVELY CHARGED EXCITONS IN ASYMMETRIC GaAs/Ga1-xAlxAs QUANTUM WELLS WITH A TWO-DIMENSIONAL HOLE GAS

2009 ◽  
Vol 23 (12n13) ◽  
pp. 2718-2722
Author(s):  
LESZEK BRYJA ◽  
ARKADIUSZ WÓJS ◽  
JAN MISIEWICZ ◽  
PAULINA PLOCHOCKA ◽  
MAREK POTEMSKI ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Quantum Wells ◽  
Low Temperatures ◽  
Numerical Calculations ◽  
High Magnetic Fields ◽  
Two Dimensional ◽  
Asymmetric Structures ◽  
Photoluminescence Studies ◽  
Positively Charged ◽  
Coulomb Energies

Positive trions in a quasi-two-dimensional hole gas confined in symmetric and asymmetric GaAs quantum wells are studied by a combination of polarization-resolved photoluminescence and transport measurements in high magnetic fields B (up to 23 T) and low temperatures (down to 30 mK). The experiments are accompanied by realistic numerical calculations. The whole family of trions (the singlet and a pair of triplets) are observed. The singlet-triplet crossing of Coulomb energies is found: hidden in symmetric and visible in asymmetric structures.

Two-dimensional warm electron system in GaAs quantum wells at low temperatures

1990 ◽  
Vol 73 (1) ◽  
pp. 69-71 ◽  
Author(s):  
A. Kabasi ◽  
D. Chattopadhyay ◽  
P.C. Rakshit
Keyword(s):  
Quantum Wells ◽  
Low Temperatures ◽  
Electron System ◽  
Two Dimensional

Electron-transport-layer-free two-dimensional perovskite solar cells based on a flexible poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) cathode

2021 ◽  
Author(s):  
Zhihai Liu ◽  
Lei Wang ◽  
Chongyang Xu ◽  
Xiaoyin Xie
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Two Dimensional ◽  
High Power Conversion Efficiency ◽  
Long Term Stability

Recently, Ruddlesden–Popper two-dimensional (2D) perovskite solar cells (PSCs) have been intensively studied, owing to their high power conversion efficiency (PCE) and excellent long-term stability. In this work, we fabricated electron-transport-layer-free...

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.

Specific heat of ordered and isotopically disordered lattices

1978 ◽  
Vol 56 (10) ◽  
pp. 1390-1394
Author(s):  
K. P. Srivastava
Keyword(s):  
Specific Heat ◽  
Low Temperatures ◽  
Numerical Study ◽  
Three Dimensional ◽  
Constant Volume ◽  
Nearest Neighbour ◽  
Two Dimensional ◽  
Appreciable Difference ◽  
Substantial Change ◽  
Neighbour Interaction

An extensive numerical study on specific heat at constant volume (Cv) for ordered and isotopically disordered lattices has been made. Cv at various temperatures for ordered and disordered linear and two-dimensional lattices have been compared and no appreciable difference in Cv between these two structures has been observed. Effect of concentration of light atoms on Cv for three-dimensional isotopically disordered lattices has also been shown.In spite of taking next-nearest-neighbour interaction into account, no substantial change in Cv between the ordered and isotopically disordered linear lattices has been found. It is shown that the low lying modes contribute substantially at low temperatures.

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