Specific Process Knowledge/Characterization/XPS/XPS technique: Difference between revisions
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=XPS technique= | =XPS technique= | ||
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* '''Surface sensitivity:''' The inelastic mean free path of the photoelectrons is very short - as a result, photoelectrons from depths larger than some 10 monolayers will not contribute to the peaks as they have lost part of their kinetic energy. This makes XPS extremely surface sensitive. | * '''Surface sensitivity:''' The inelastic mean free path of the photoelectrons is very short - as a result, photoelectrons from depths larger than some 10 monolayers will not contribute to the peaks as they have lost part of their kinetic energy. This makes XPS extremely surface sensitive. | ||
The basic principle is shown below | The basic principle is shown below. The image is taken from Wikipedia - click on it to go to the wikipedia page on X-ray photoelectron spectroscopy. | ||
[[File:800px-XPS_PHYSICS.jpg|700px| frameless|link=https://en.wikipedia.org/wiki/X-ray_photoelectron_spectroscopy|XPS principle. The image is taken from wikipedia - click on image to access wikipedia directly.]] | [[File:800px-XPS_PHYSICS.jpg|700px| frameless|link=https://en.wikipedia.org/wiki/X-ray_photoelectron_spectroscopy|XPS principle. The image is taken from wikipedia - click on image to access wikipedia directly.]] | ||
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= More information on XPS = | = More information on XPS = | ||
There is a vast number of textbooks on XPS and the internet/Youtube has plenty information as well. For the training sessions we have chosen a document entitled 'Electron Spectroscopy of surfaces' by Peter S. Deimel and Francesco Allegretti from the Technical University of Munich. It relatively short, yet thorough and takes you through theory and hardware. Skip sections 6-8. | There is a vast number of textbooks on XPS and the internet/Youtube has plenty information as well. For the training sessions we have chosen a document entitled 'Electron Spectroscopy of surfaces' by Peter S. Deimel and Francesco Allegretti from the Technical University of Munich. It relatively short, yet thorough and takes you through theory and hardware. Skip sections 6-8. Click [[Specific_Process_Knowledge/Characterization/XPS/ExtDocs|here]] to go the page with external material. | ||
For the practical part of the training, some videos have been made. They can only be accessed using this link: | For the practical part of the training, some videos have been made. They can only be accessed using this link: | ||
*[https://www.youtube.com/playlist?list=PLjWVU97LayHBtOkPCSv8QA-sD4Dbz1jrb Youtube playlist] | *[https://www.youtube.com/playlist?list=PLjWVU97LayHBtOkPCSv8QA-sD4Dbz1jrb Youtube playlist] | ||