O/I-MBE: formation of highly ordered phthalocyanine/semiconductor junctions by molecular-beam epitaxy: photoelectrochemical characterization

Neal R. Armstrong, Ken W. Nebesny, Greg E. Collins, Paul A. Lee, Lai K. Chau, Claude Arbour, Bruce Parkinson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Highly ordered phthalocyanine (Pc)/inorganic semiconductor heterojunctions have been created by a process of molecular beam epitaxy in ultrahigh vacuum environments (O/I- MBE). The layered metal dichalcogenides, MoS2, and SnS2, have been used as substrates, either as melt grown crystals or as thin films, created by the MBE process, immediately prior to the deposition of the organic layer. Surface electron diffraction (RHEED) is used to ascertain the type and extent of ordering of the Pc layer. Absorption or reflection spectroscopies are used in the visible wavelength region to characterize the shape and position of the Q-band absorbance of the ordered dye layers, which confirm the ordering seen by RHEED. When deposited on doped SnS2 crystals, and immersed in aqueous electrolytes, the photocurrent yield of these dye layers can also be measured, which provides an alternative means of obtaining the Q-band spectrum for ultrathin dye layers.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Int Soc for Optical Engineering
Pages18-26
Number of pages9
ISBN (Print)0819406872
StatePublished - Dec 1 1991
EventPhotopolymer Device Physics, Chemistry, and Applications II - San Diego, CA, USA
Duration: Jul 24 1991Jul 26 1991

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume1559
ISSN (Print)0277-786X

Other

OtherPhotopolymer Device Physics, Chemistry, and Applications II
CitySan Diego, CA, USA
Period7/24/917/26/91

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Armstrong, N. R., Nebesny, K. W., Collins, G. E., Lee, P. A., Chau, L. K., Arbour, C., & Parkinson, B. (1991). O/I-MBE: formation of highly ordered phthalocyanine/semiconductor junctions by molecular-beam epitaxy: photoelectrochemical characterization. In Proceedings of SPIE - The International Society for Optical Engineering (pp. 18-26). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 1559). Publ by Int Soc for Optical Engineering.