Specific Process Knowledge/Characterization/AFM: Atomic Force Microscopy/KPFM: Difference between revisions
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[[File:KPFM workfunction Au Si Al.jpg|400px]] | [[File:KPFM workfunction Au Si Al.jpg|400px]] | ||
For reference I prefer using the gold as the two other materials form oxides and I think the uncertainty of | For reference I prefer using the gold as the two other materials form oxides and I think the uncertainty of these values are higher. | ||
But even for gold you can find several different values for the work function. Take a look at these references: [http://student.ndhu.edu.tw/~d9914102/Teaching/EM/Paper/data/The%20work%20function%20of%20the%20elements%20and%20its%20periodicity.pdf], [https://en.wikipedia.org/wiki/Work_function#Work_functions_of_elements[11]]. The work function value range for gold seems to be from 5.10eV to 5.47eV. 5.10eV for poly crystaline gold and the higher values for single crystalline gold. I believe I do not have single crystalline gold, so I will use the 5.10eV as the reference value for the sample. | But even for gold you can find several different values for the work function. Take a look at these references: [http://student.ndhu.edu.tw/~d9914102/Teaching/EM/Paper/data/The%20work%20function%20of%20the%20elements%20and%20its%20periodicity.pdf], [https://en.wikipedia.org/wiki/Work_function#Work_functions_of_elements[11]]. The work function value range for gold seems to be from 5.10eV to 5.47eV. 5.10eV for poly crystaline gold and the higher values for single crystalline gold. I believe I do not have single crystalline gold, so I will use the 5.10eV as the reference value for the sample. | ||