Title :
The effects of alkali metal diffusion on zinc phosphide thin films
Author :
Paquin, Brooke ; Cimaroli, Alex ; Yanfa Yan
Author_Institution :
Dept. of Phys. & Astron., Univ. of Toledo, Toledo, OH, USA
Abstract :
Zinc phosphide (Zn3P2) thin films are grown by close-spaced sublimation. Three substrates were chosen to grow thin films: soda lime glass, mica, and quartz. C-V measurements were performed to determine the majority charge carrier concentration of the 2-5μm Zn3P2 thin films. Quartz (no alkali metals) had an average charge carrier density of 1×1015 cm-3; whereas mica (some alkali metals) had 3 times the carrier density of quartz. The concentration of charge carriers for soda-lime glass substrates could not be determined due to a bad junction with Magnesium. This is potentially related to the high concentration of sodium in soda-lime glass.
Keywords :
alkali metals; carrier density; glass; mica; quartz; semiconductor thin films; solar cells; zinc compounds; C-V measurements; Zn3P2; alkali metal diffusion; charge carrier concentration; charge carrier density; close-spaced sublimation; mica; photovoltaic cells; quartz; soda-lime glass substrates; zinc phosphide thin films; Charge measurement; Doping; Educational institutions; Glass; Metals; X-ray scattering; alkali metal doping; charge carrier concentration; photovoltaic cells; thin film; zinc phosphide;
Conference_Titel :
Photovoltaic Specialist Conference (PVSC), 2014 IEEE 40th
Conference_Location :
Denver, CO
DOI :
10.1109/PVSC.2014.6924872
