Depletion Zone : Same as cell barrier. The term derives from the fact that this microscopically thin region is depleted of charge carriers (free electrons and holes)
US Department of Labor, Electric Power eTool: Glossary of Terms, Occupational Safety & Health Administration OSHA, Washington, D.C., USA 2010. https://www.osha.gov/SLTC/etools/electric_power/gl ossary.html, (OSHA/ Electr Pwr - Amer) {618}