Photoemission of Holes from Metals into Anthracene

Abstract

Photoemission of holes from metal electrodes into anthracene has been observed for Au, Ag, Al, Pb, and Mg. The photoemission of electrons into the anthracene from these metals could not be observed. From the variation of the photoemission threshold for holes with the work function of the metal a value of 5.80±0.34 eV was obtained for the energy of the valence band below the vacuum level; this value agrees with that determined by photoemission of electrons from anthracene into vacuum. The spectral response of the photoemission is complex; it appears to result from photoemission into a system of narrow bands arising from the interaction of molecular vibrations with a narrow electronic band. The experiment indicates that the energy bands are under 0.1 eV in width, as predicted by theory, and are broadened by vibrational overlap.

Structural and excited-state properties of oligoacene crystals from first principles

“…Experimental PES data have been rigidly shifted, by an amount indicated in the figure, so as to match reference ionization potential data of Refs. [144,145] (pink stars) and PES data of Ref. [147] (orange points).…”

“…First, because absolute potentials are never defined in periodic boundary calculations, we align the top of the GW -computed valence band with experimental values from Refs. [144,145]. To compare with experiment, each photoemission and inverse photoemission curve is aligned with the GW valence and conduction band DOS, respectively.…”

Photoelectric determination of V0 values and electron ranges in some cryogenic liquids

“…This technique has been used for the investigation of solid insulators and semiconductors (1)(2)(3)(4)(5) and In 1971 lt was introduced for the study of electronic levels in non-polar liquids by Holroyd and Allen (6).…”

On the Feasibility of Observing Photoemission from Metal Contacts into Anthracene

“…Finally, the good fit between the experimental points and Eq. (1) suggests that only one type of carrier is involved (unless, of course, s/p is the same for both carrier types, which is unlikely).…”