scholarly journals Use of energy-filtered photoelectron emission microscopy and Kelvin probe force microscopy to visualise work function changes on diamond thin films terminated with oxygen and lithium mono-layers for thermionic energy conversion

2014 ◽  
Vol 11 (9/10/11) ◽  
pp. 796 ◽  
Author(s):  
H.D. Andrade ◽  
M.Z. Othman ◽  
K.M. O' ◽  
N.A. Donnell ◽  
J.H. Lay ◽  
...  
Keyword(s):  
Thin Films ◽  
Energy Conversion ◽  
Work Function ◽  
Kelvin Probe Force Microscopy ◽  
Kelvin Probe ◽  
Photoelectron Emission ◽  
Force Microscopy ◽  
Emission Microscopy ◽  
Thermionic Energy Conversion ◽  
Thermionic Energy

Local charge writing in epitaxial SmNiO3 thin films

2014 ◽  
Vol 2 (19) ◽  
pp. 3805-3811 ◽  
Author(s):  
Feng Yan ◽  
Frank Schoofs ◽  
Jian Shi ◽  
Sieu D. Ha ◽  
R. Jaramillo ◽  
...  
Keyword(s):  
Thin Films ◽  
Work Function ◽  
Insulator Transition ◽  
Kelvin Probe Force Microscopy ◽  
Kelvin Probe ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Force Microscopy ◽  
Local Charge

We have investigated the evolution of work function in epitaxial correlated perovskite SmNiO3 (SNO) thin films spanning the metal–insulator transition (MIT) by Kelvin probe force microscopy (KPFM).

scholarly journals Work function of few layer graphene covered nickel thin films measured with Kelvin probe force microscopy

2016 ◽  
Vol 108 (4) ◽  
pp. 041602 ◽  
Author(s):  
B. Eren ◽  
U. Gysin ◽  
L. Marot ◽  
Th. Glatzel ◽  
R. Steiner ◽  
...  
Keyword(s):  
Thin Films ◽  
Work Function ◽  
Kelvin Probe Force Microscopy ◽  
Kelvin Probe ◽  
Force Microscopy ◽  
Nickel Thin Films ◽  
Layer Graphene ◽  
Few Layer Graphene

Thin films of amphiphilic polyelectrolytes. Soft materials characterized by Kelvin probe force microscopy

Polymer ◽  
2013 ◽  
Vol 54 (21) ◽  
pp. 5733-5740 ◽  
Author(s):  
X.G. Briones ◽  
M.D. Urzúa ◽  
H.E. Ríos ◽  
F.J. Espinoza-Beltrán ◽  
R. Dabirian ◽  
...  
Keyword(s):  
Thin Films ◽  
Soft Materials ◽  
Kelvin Probe Force Microscopy ◽  
Kelvin Probe ◽  
Force Microscopy

scholarly journals Work function difference of naphthyl end-capped oligothiophene in different crystal alignments studied by Kelvin probe force microscopy

2020 ◽  
pp. 106060
Author(s):  
Mads Nibe Larsen ◽  
Mads Svanborg Peters ◽  
Rodrigo Lemos-Silva ◽  
Demetrio A. Da Silva Filho ◽  
Bjarke Jørgensen ◽  
...  
Keyword(s):  
Work Function ◽  
Kelvin Probe Force Microscopy ◽  
Kelvin Probe ◽  
Force Microscopy ◽  
Work Function Difference ◽  
Function Difference

Relation between work function and structural properties of triangular defects in 4H-SiC epitaxial layer: Kelvin probe force microscopic and spectroscopic analyses

Nanoscale ◽  
2020 ◽  
Vol 12 (15) ◽  
pp. 8216-8229
Author(s):  
Hong-Ki Kim ◽  
Soo In Kim ◽  
Seongjun Kim ◽  
Nam-Suk Lee ◽  
Hoon-Kyu Shin ◽  
...  
Keyword(s):  
Work Function ◽  
Structural Properties ◽  
Epitaxial Layer ◽  
Kelvin Probe Force Microscopy ◽  
Kelvin Probe ◽  
Force Microscopy ◽  
Spectroscopic Analyses ◽  
Work Function Difference ◽  
Function Difference

In the defective SiC epitaxial layer, the work function variation was observed by Kelvin probe force microscopy (KPFM), and the work function difference came from the variation of polytype and the disordered surface.

Vacuum Thermionic Energy Conversion Based on Nanocrystalline Diamond Films

2006 ◽  
Vol 48 ◽  
pp. 83-92
Author(s):  
F.A.M. Koeck ◽  
J.M. Garguillo ◽  
John R. Smith ◽  
Y.J. Tang ◽  
G.L. Bilbro ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Work Function ◽  
Diamond Films ◽  
Thermionic Emission ◽  
Nanocrystalline Diamond ◽  
Effective Work ◽  
Effective Work Function ◽  
Nanocrystalline Diamond Films ◽  
Thermionic Energy Conversion ◽  
Thermionic Energy

Vacuum thermionic energy conversion achieves direct conversion of heat into electrical energy. The process involves thermionic electron emission from a hot surface and collection of the electrons on a cold surface where the two surfaces are separated by a small vacuum gap. Results are presented which indicate that nanocrystalline diamond films could lead to highly efficient thermionic energy conversion at temperatures less that 700°C. A critical element of the process is obtaining a stable, low work function surface for thermionic emission. Results are presented which establish that N-doped diamond films with a negative electron affinity can exhibit a barrier to emission of less than 1.6 eV. Films can be deposited onto field enhancing structures to achieve an even lower effective work function. Alternatively, nanocrystalline diamond films prepared with S doping exhibit field enhanced thermionic emission and an effective work function of ~1.9 eV. The field enhanced structures can reduce the effect of space charge and allow a larger vacuum gap. The possibility of a low temperature nanocrystalline diamond based thermionic energy conversion system is presented.

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