Factors Which Control the "N-Type" or "P-Type" Photoelectrical Behavior of Molecular Semiconductor Thin Films - Research portal of Justus Liebig University Giessen:

Conference paper

Factors Which Control the "N-Type" or "P-Type" Photoelectrical Behavior of Molecular Semiconductor Thin Films

Authors list: Schlettwein, D; Armstrong, NR; Lee, PA; Nebesny, KW

Publication year: 1994

Pages: 161-171

Journal: Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals

Volume number: 253

ISSN: 1058-725X

Conference: 6th International Conference on Unconventional Photoactive Solids

Publisher: Gordon and Breach

Abstract:
Thin crystalline films of phthalocyaninatozinc(II) (PcZn), and its derivatives tetrapyridotetraazaporphyrinatozinc(II) (TPyTAPZn) and naphthalocyaninatozinc(II) (NcZn); as well as of perylenetetracarboxilic dianhydride (PTCDA) and its derivative dimethylperylenetetracarboxilic diimide (MePTCDI), have been prepared by vapor deposition under UHV conditions. me electrical conductivity (sigma(d)) and photoconductivity (sigma(p)) of these films were measured on interdigitated microelectrode arrays (IMA) of PtSix on Si. The films were studied as prepared and during exposure to rising partial pressures of oxygen and ammonia. Changes of sigma(d) and sigma(p) with O-2 or NH3 exposure, as well as changes in their activation energies E(A), showed striking differences among-the studied compounds. Ground-state levels are derived from in-situ UPS experiments, excited state levels from luminescence measurements. The influence of the position of these energy levels on the electrical properties is discussed within existing models of molecular semiconductors, and the impact of these studies on the use of these materials in photoelectrochemical and solid state photovoltaic cells is discussed.

Authors/Editors

- Uni.-Prof. Dr. Derck Schlettwein

Citation Styles

Harvard Citation style: Schlettwein, D., Armstrong, N., Lee, P. and Nebesny, K. (1994) Factors Which Control the "N-Type" or "P-Type" Photoelectrical Behavior of Molecular Semiconductor Thin Films, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 253, pp. 161-171

APA Citation style: Schlettwein, D., Armstrong, N., Lee, P., & Nebesny, K. (1994). Factors Which Control the "N-Type" or "P-Type" Photoelectrical Behavior of Molecular Semiconductor Thin Films. Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals. 253, 161-171.