Doping and Quantum Confinement Effects in Single Si Nanocrystals Observed by Scanning Tunneling Spectroscopy

Nano Letters ◽  
2013 ◽  
Vol 13 (6) ◽  
pp. 2516-2521 ◽  
Author(s):  
O. Wolf ◽  
M. Dasog ◽  
Z. Yang ◽  
I. Balberg ◽  
J. G. C. Veinot ◽  
...  
Keyword(s):  
Quantum Confinement ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Scanning Tunneling ◽  
Confinement Effects ◽  
Quantum Confinement Effects ◽  
Si Nanocrystals

Evidence of quantum confinement effects on interband optical transitions in Si nanocrystals

2010 ◽  
Vol 82 (4) ◽  
Author(s):  
M. I. Alonso ◽  
I. C. Marcus ◽  
M. Garriga ◽  
A. R. Goñi ◽  
J. Jedrzejewski ◽  
...  
Keyword(s):  
Quantum Confinement ◽  
Optical Transitions ◽  
Confinement Effects ◽  
Quantum Confinement Effects ◽  
Si Nanocrystals

Size-dependent donor and acceptor states in codoped Si nanocrystals studied by scanning tunneling spectroscopy

Nanoscale ◽  
2017 ◽  
Vol 9 (45) ◽  
pp. 17884-17892 ◽  
Author(s):  
Or Ashkenazi ◽  
Doron Azulay ◽  
Isaac Balberg ◽  
Shinya Kano ◽  
Hiroshi Sugimoto ◽  
...  
Keyword(s):  
Optical Properties ◽  
Semiconductor Nanocrystals ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Scanning Tunneling ◽  
Electrical And Optical Properties ◽  
Size And Shape ◽  
Size Dependent ◽  
Si Nanocrystals ◽  
Donor And Acceptor

The electrical and optical properties of semiconductor nanocrystals (NCs) can be controlled, in addition to size and shape, by doping.

Absence of quantum confinement effects in the photoluminescence of Si3N4–embedded Si nanocrystals

2014 ◽  
Vol 115 (20) ◽  
pp. 204301 ◽  
Author(s):  
D. Hiller ◽  
A. Zelenina ◽  
S. Gutsch ◽  
S. A. Dyakov ◽  
L. López-Conesa ◽  
...  
Keyword(s):  
Quantum Confinement ◽  
Confinement Effects ◽  
Quantum Confinement Effects ◽  
Si Nanocrystals

Scanning-tunneling spectroscopy on conjugated polymer films

2003 ◽  
Vol 771 ◽  
Author(s):  
M. Kemerink ◽  
S.F. Alvarado ◽  
P.M. Koenraad ◽  
R.A.J. Janssen ◽  
H.W.M. Salemink ◽  
...  
Keyword(s):  
Polymer Films ◽  
Conjugated Polymer ◽  
Three Dimensional ◽  
Field Enhancement ◽  
Direct Consequence ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Band Alignment ◽  
Scanning Tunneling ◽  
Order Of Magnitude

AbstractScanning-tunneling spectroscopy experiments have been performed on conjugated polymer films and have been compared to a three-dimensional numerical model for charge injection and transport. It is found that field enhancement near the tip apex leads to significant changes in the injected current, which can amount to more than an order of magnitude, and can even change the polarity of the dominant charge carrier. As a direct consequence, the single-particle band gap and band alignment of the organic material can be directly obtained from tip height-voltage (z-V) curves, provided that the tip has a sufficiently sharp apex.

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