Correlation between photoelectric and optical absorption spectra of thermally evaporated pentacene films

Jiyoul Lee, S. S. Kim, Kibum Kim, Jae Hoon Kim, Seongil Im

Research output: Contribution to journalArticle

96 Citations (Scopus)

Abstract

The spectral photoresponse of Al/pentacene Schottky junction photodiodes and optical absorption spectra of pentacene films thermally evaporated on glass were measured. The photoelectric response exhibited the genuine highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) transition at 1.97 eV. It was shown that the interband absorption peaks were identified in the optical absorption spectra. The HOMO-LUMO gap energy of 1.97 eV and the fundamental exciton binding energy of 0.15 eV for thin solid pentacene were determined by comparing the complementary measurements.

Original languageEnglish
Pages (from-to)1701-1703
Number of pages3
JournalApplied Physics Letters
Volume84
Issue number10
DOIs
Publication statusPublished - 2004 Mar 8

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optical spectrum
molecular orbitals
optical absorption
absorption spectra
photodiodes
binding energy
excitons
glass

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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title = "Correlation between photoelectric and optical absorption spectra of thermally evaporated pentacene films",
abstract = "The spectral photoresponse of Al/pentacene Schottky junction photodiodes and optical absorption spectra of pentacene films thermally evaporated on glass were measured. The photoelectric response exhibited the genuine highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) transition at 1.97 eV. It was shown that the interband absorption peaks were identified in the optical absorption spectra. The HOMO-LUMO gap energy of 1.97 eV and the fundamental exciton binding energy of 0.15 eV for thin solid pentacene were determined by comparing the complementary measurements.",
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Correlation between photoelectric and optical absorption spectra of thermally evaporated pentacene films. / Lee, Jiyoul; Kim, S. S.; Kim, Kibum; Kim, Jae Hoon; Im, Seongil.

In: Applied Physics Letters, Vol. 84, No. 10, 08.03.2004, p. 1701-1703.

Research output: Contribution to journalArticle

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T1 - Correlation between photoelectric and optical absorption spectra of thermally evaporated pentacene films

AU - Lee, Jiyoul

AU - Kim, S. S.

AU - Kim, Kibum

AU - Kim, Jae Hoon

AU - Im, Seongil

PY - 2004/3/8

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AB - The spectral photoresponse of Al/pentacene Schottky junction photodiodes and optical absorption spectra of pentacene films thermally evaporated on glass were measured. The photoelectric response exhibited the genuine highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) transition at 1.97 eV. It was shown that the interband absorption peaks were identified in the optical absorption spectra. The HOMO-LUMO gap energy of 1.97 eV and the fundamental exciton binding energy of 0.15 eV for thin solid pentacene were determined by comparing the complementary measurements.

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