Monochromatic Electron Photoemission from Diamondoid Monolayers
W. L. Yang,1,2
J. D. Fabbri,1
T. M. Willey,3
J. R. I. Lee,3
J. E. Dahl,4
R. M. K. Carlson,4
P. R. Schreiner,5
A. A. Fokin,5,6
B. A. Tkachenko,5
N. A. Fokina,5
W. Meevasana,1
N. Mannella,1,2
K. Tanaka,1,2
X. J. Zhou,1,2
T. van Buuren,3
M. A. Kelly,1
Z. Hussain,2
N. A. Melosh,1
Z.-X. Shen1
We found monochromatic electron photoemission from large-area self-assembled monolayers of a functionalized diamondoid, [121]tetramantane-6-thiol. Photoelectron spectra of the diamondoid monolayers exhibited a peak at the low–kinetic energy threshold; up to 68% of all emitted electrons were emitted within this single energy peak. The intensity of the emission peak is indicative of diamondoids being negative electron affinity materials. With an energy distribution width of less than 0.5 electron volts, this source of monochromatic electrons may find application in technologies such as electron microscopy, electron beam lithography, and field-emission flat-panel displays.
1 Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA 94305, USA.
2 Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley CA 94720, USA.
3 Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
4 Molecular Diamond Technologies, Chevron Technology Ventures, 100 Chevron Way, Richmond, CA 94802, USA.
5 Institut für Organische Chemie, Justus-Liebig University Giessen, Heinrich-Buff-Ring 58, 35392 Giessen, Germany.
6 Kiev Polytechnic Institue, pr. Pobedy 37, 03056 Kiev, Ukraine.
