Charge carrier confinement in hematite and hematite / MoTe2 nanocomposites; the role of interface states

2021 ◽  
Vol 113 ◽  
pp. 106532
Author(s):  
Hassan Wahab ◽  
Muhammad Younas ◽  
Rao Tahir Ali Khan ◽  
Muhammad Nadeem ◽  
M. Nasir Khan ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Interface States ◽  
Carrier Confinement

scholarly journals Deciphering the role of quantum dot size in the ultrafast charge carrier dynamics at the perovskite–quantum dot interface

2020 ◽  
Vol 8 (42) ◽  
pp. 14834-14844
Author(s):  
Piotr Piatkowski ◽  
Sofia Masi ◽  
Pavel Galar ◽  
Mario Gutiérrez ◽  
Thi Tuyen Ngo ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Charge Carrier ◽  
Rate Constants ◽  
Transient Absorption ◽  
Carrier Dynamics ◽  
Carrier Transfer ◽  
Charge Carrier Dynamics ◽  
Conduction Bands

Charge-carrier transfer (CT) from the perovskite host to PbS QDs were studied using fs-transient absorption and THz techniques. The CT rate constants increase with the size of QDs due to a change in the position of valence and conduction bands in PbS QDs.

scholarly journals WO3/BiVO4: impact of charge separation at the timescale of water oxidation

2019 ◽  
Vol 10 (9) ◽  
pp. 2643-2652 ◽  
Author(s):  
Shababa Selim ◽  
Laia Francàs ◽  
Miguel García-Tecedor ◽  
Sacha Corby ◽  
Chris Blackman ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Water Oxidation ◽  
Charge Separation ◽  
Carrier Dynamics ◽  
Applied Bias ◽  
Charge Carrier Dynamics

Unveiling the role of applied bias on the charge carrier dynamics in the WO3/BiVO4 junction during water oxidation.

Strain-enhanced charge carrier confinement in quantum dots and wires fabricated by cleaved edge overgrowth

2010 ◽  
Author(s):  
J. Ehehalt ◽  
C. Neugirg ◽  
R. Schuster ◽  
D. Schuh ◽  
W. Wegscheider ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Charge Carrier ◽  
Carrier Confinement

Role of ZnS Segment on Charge Carrier Dynamics and Photoluminescence Property of CdSe@CdS/ZnS Quantum Rods

2018 ◽  
Vol 122 (11) ◽  
pp. 6379-6387 ◽  
Author(s):  
Pushpendra Kumar ◽  
Rajeev Ray ◽  
Patrick Adel ◽  
Franziska Luebkemann ◽  
Dirk Dorfs ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Photoluminescence Property ◽  
Carrier Dynamics ◽  
Quantum Rods ◽  
Charge Carrier Dynamics

scholarly journals Tailoring the charge carrier dynamics in ZnO nanowires: the role of surface hole/electron traps

2012 ◽  
Vol 14 (9) ◽  
pp. 3075 ◽  
Author(s):  
Mingjie Li ◽  
Guichuan Xing ◽  
Lloyd Foong Nien Ah Qune ◽  
Guozhong Xing ◽  
Tom Wu ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Dynamics ◽  
Zno Nanowires ◽  
Electron Traps ◽  
Charge Carrier Dynamics

Theoretical Models of Schottky Barriers

1981 ◽  
Vol 10 ◽  
Author(s):  
M. Schluter
Keyword(s):  
Theoretical Models ◽  
Interface States ◽  
Schottky Barriers ◽  
Quantum Mechanical ◽  
Barrier Heights

ABSTRACTA review is presented in which existing theories of the formation of Schottky barriers are analyzed. The list includes macroscopic dielectric approaches and various microscopic quantum mechanical treatments. The central role of interface states and their different physical origins are assessed. Simple concepts, able to predict general trends in barrier heights, are examined along with detailed microscopic theories applied to individual contacts.

CHARGE CARRIER MASS IN HIGH Tc SUPERCONDUCTORS

1999 ◽  
Vol 13 (29n31) ◽  
pp. 3582-3584
Author(s):  
MARCO ZOLI
Keyword(s):  
Charge Carrier ◽  
Numerical Study ◽  
Small Polaron ◽  
Electron Mass ◽  
High Tc Superconductors ◽  
High Tc ◽  
Effective Masses ◽  
Polaron Theory ◽  
Holstein Model

The theory of polarons has experienced a surge of activity in the last years partly due to the possible role of polaronic quasiparticles in high Tc superconductors. This numerical study of the Holstein model shows that the polaronic effective masses become essentially dimension independent and of order ≃10–50 times the electron mass at sufficiently strong intermolecular coupling forces. Such values (which are much lower than those obtained by traditional small polaron theory) would erase one the serious objections against a (bi)polaronic picture for high Tc superconductors.

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