Properties of Hydrogen Terminated Diamond as a Photocathode
نویسندگان
چکیده
منابع مشابه
Properties of hydrogen terminated diamond as a photocathode.
Electron emission from the negative electron affinity (NEA) surface of hydrogen terminated, boron doped diamond in the [100] orientation is investigated using angle resolved photoemission spectroscopy (ARPES). ARPES measurements using 16 eV synchrotron and 6 eV laser light are compared and found to show a catastrophic failure of the sudden approximation. While the high energy photoemission is f...
متن کاملSecondary-electron emission from hydrogen- terminated diamond
Diamond amplifiers demonstrably are an electron source with the potential to support high-brightness, highaverage-current emission into a vacuum. We recently developed a reliable hydrogenation procedure for the diamond amplifier. The systematic study of hydrogenation resulted in the reproducible fabrication of high gain diamond amplifier. Furthermore, we measured the emission probability of dia...
متن کاملSurface transfer doping of hydrogen-terminated diamond by C60F48: energy level scheme and doping efficiency.
Surface sensitive C1s core level photoelectron spectroscopy was used to examine the electronic properties of C(60)F(48) molecules on the C(100):H surface. An upward band bending of 0.74 eV in response to surface transfer doping by fluorofullerene molecules is measured. Two distinct molecular charge states of C(60)F(48) are identified and their relative concentration determined as a function of ...
متن کاملWork function and affinity changes associated with the structure of hydrogen-terminated diamond „100... surfaces
The positron and electron work functions and affinities of diamond ~100! surfaces were measured using positron reemission and Kelvin probe techniques to reveal changes in the chemical potential, surface dipole, and band bending. The positron affinity x1 is negative; at temperatures between 20 and 100 °C we find x1 524.2060.04 eV for the (231) reconstructed, hydrogen-free surface, 23.7660.04 eV ...
متن کاملThermionic emission from surface-terminated nanocrystalline diamond
Thermionic electron emission forms the basis of both electron sources for a variety of applications and a direct energy conversion process that is compact and scalable. The present study characterizes thermionic emission from boron-doped nanocrystalline diamond films with hydrogen and nitrophenyl surface termination layers. A hemispherical energy analyzer was used to measure electron energy dis...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2011
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.106.137602