| Issue |
Europhys. Lett.
Volume 39, Number 4, August II 1997
|
|
|---|---|---|
| Page(s) | 459 - 464 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1997-00377-0 | |
| Published online | 01 September 2002 | |
Poole-Frenkel ionization of excitons in solid Kr
Fachbereich Physik der Philipps-Universität Marburg
and Wissenschaftliches Zentrum für Materialwissenschaften,
Renthof 5, D-35032 Marburg, Germany
Received:
29
August
1996
Accepted:
11
June
1997
During vacuum-UV excitation of the excitons in solid Kr photoconductivity was observed. For applied voltages below 50 V the photocurrent spectrum reflected the number of excitons produced in the bulk, whereas at higher voltages the contribution of excitons in a thin surface layer, including longitudinal and surface excitons, dominated the spectrum. These findings can be explained under the assumption of a Poole-Frenkel effect in the electrical fields produced by surface charges generated during the irradiation.
PACS: 79.70.+q – Field emission, ionization, evaporation, and desorption / 71.35.-y – Excitons and related phenomena / 72.40.+w – Photoconduction and photovoltaic effects
© EDP Sciences, 1997
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.