Dependence on Geomagnetic Activity of Magnetic Pulsation Frequency of pc-3 and pc‑4 Ranges
Abstract
Thermally-stimulated currents (TSC) with sharp spectra were observed in tetracene films deposited at room temperature and cooled rapidly after deposition. A TSC near 230 K was observed to depend on the film thickness, the existence of a bias voltage, the excitation wavelength, and the photocurrent, and appeared only in a vacuum. This TSC is thought to be due to an amorphous structure in the films. Its behavior shows that it is produced by charge-transfer excitons interacting with charge carriers. As the amorphous structure disappeared, polycrystallization occurred in the films.
- Publication:
-
Geophysical Journal International
- Pub Date:
- June 1968
- DOI:
- 10.1111/j.1365-246X.1968.tb05746.x
- Bibcode:
- 1985JaJAP..24...79S
- Keywords:
-
- Amorphous Semiconductors;
- Film Thickness;
- Hydrocarbons;
- Organic Semiconductors;
- Photoelectric Emission;
- Semiconducting Films;
- Aromatic Compounds;
- Convective Flow;
- Electric Current;
- Film Cooling;
- Polycrystals;
- Thick Films;
- Thin Films;
- Solid-State Physics