Study of Single Silicon Quantum Dots’ Band Gap and Single-Electron Charging Energies by Room Temperature Scanning Tunneling Microscopy

Nano Letters ◽  
2008 ◽  
Vol 8 (6) ◽  
pp. 1689-1694 ◽  
Author(s):  
Bashir Zaknoon ◽  
Gad Bahir ◽  
Cecile Saguy ◽  
Rachel Edrei ◽  
Alon Hoffman ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Scanning Tunneling Microscopy ◽  
Band Gap ◽  
Room Temperature ◽  
Single Electron ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Silicon Quantum Dots ◽  
Temperature Scanning

scholarly journals Low-temperature scanning tunneling microscopy of selfassembled inas quantum dots grown by droplet epitaxy

2010 ◽  
Vol 3 (2) ◽  
pp. 1299-1304
Author(s):  
C. Durand ◽  
A. Peilloux ◽  
K. Suzuki ◽  
K. Kanisawa ◽  
B. Grandidier ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Low Temperature ◽  
Scanning Tunneling Microscopy ◽  
Droplet Epitaxy ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Inas Quantum Dots ◽  
Temperature Scanning

ROOM TEMPERATURE AND ELEVATED TEMPERATURE CHARACTERIZATION OF NANOCRYSTALLINE SnO2 SURFACES BY SCANNING TUNNELING MICROSCOPY AND SPECTROSCOPY

2004 ◽  
Vol 03 (04n05) ◽  
pp. 519-524
Author(s):  
T. G. G. MAFFEÏS ◽  
G. T. OWEN ◽  
S. P. WILKS ◽  
C. MALAGÙ ◽  
G. MARTINELLI ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Band Gap ◽  
Surface Properties ◽  
Room Temperature ◽  
Gas Sensing ◽  
Low Cost ◽  
Scanning Tunneling ◽  
Full Potential ◽  
Tunneling Microscopy ◽  
Sensing Applications

Semiconductor gas sensors based on nanocrystalline SnO 2 offer many advantages over current technologies for detecting reducing gases, such as low cost, long lifetime, and high selectivity and sensitivity. However, the local surface properties on the nanoscale of SnO 2 nanocrystals are not fully understood, which impedes the exploitation of the full potential of SnO 2 for gas sensing applications. In this paper, we present a scanning tunneling microscopy and spectroscopy (STM/STS) study of nanocrystalline SnO 2 at room temperature, and under standard sensing conditions at 120°C. STS data indicate that the electronic surface properties change with nanoparticle size, temperature and exposure to gas. The surface density of states in the band gap is shown to increase with temperature while CO exposures induce a large drop in the density of band gap states as the CO molecules react with chemisorbed oxygen species.

scholarly journals STM tip-assisted engineering of molecular nanostructures: PTCDA islands on Ge(001):H surfaces

2013 ◽  
Vol 4 ◽  
pp. 927-932 ◽  
Author(s):  
Amir A Ahmad Zebari ◽  
Marek Kolmer ◽  
Jakub S Prauzner-Bechcicki
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Room Temperature ◽  
Scanning Probe ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Temperature Scanning ◽  
Tetracarboxylic Dianhydride ◽  
Molecular Nanostructures

Islands composed of perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) molecules are grown on a hydrogen passivated Ge(001):H surface. The islands are studied with room temperature scanning tunneling microscopy and spectroscopy. The spontaneous and tip-induced formation of the top-most layer of the island is presented. Assistance of the scanning probe seems to be one of the factors that facilitate and speed the process of formation of the top-most layer.

Room-Temperature Scanning Tunneling Microscopy Manipulation of Single C60Molecules at the Liquid−Solid Interface:  Playing Nanosoccer

2004 ◽  
Vol 108 (31) ◽  
pp. 11556-11560 ◽  
Author(s):  
Stefan J. H. Griessl ◽  
Markus Lackinger ◽  
Ferdinand Jamitzky ◽  
Thomas Markert ◽  
Michael Hietschold ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Room Temperature ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Solid Interface ◽  
Temperature Scanning

scholarly journals Adsorption characteristics of Er3N@C80on W(110) and Au(111) studied via scanning tunneling microscopy and spectroscopy

2017 ◽  
Vol 8 ◽  
pp. 1127-1134 ◽  
Author(s):  
Sebastian Schimmel ◽  
Zhixiang Sun ◽  
Danny Baumann ◽  
Denis Krylov ◽  
Nataliya Samoylova ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Room Temperature ◽  
High Mobility ◽  
Considerable Extent ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Endohedral Fullerenes ◽  
Adsorption Characteristics ◽  
Substrate Interaction ◽  
Temperature Scanning

We performed a study on the fundamental adsorption characteristics of Er3N@C80 deposited on W(110) and Au(111) via room temperature scanning tunneling microscopy and spectroscopy. Adsorbed on W(110), a comparatively strong bond to the endohedral fullerenes inhibited the formation of ordered monolayer islands. In contrast, the Au(111)-surface provides a sufficiently high mobility for the molecules to arrange in monolayer islands after annealing. Interestingly, the fullerenes modify the herringbone reconstruction indicating that the molecule–substrate interaction is of considerable extent. Investigations concerning the electronic structure of Er3N@C80/Au(111) reveals spatial variations dependent on the termination of the Au(111) at the interface.

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