Characterization of industrially processed chalcopyrite solar cells with varied absorber composition

In the present thesis by publication loss mechanisms in industrially processed chalcopyrite thin film solar cells of the conventional ZnO:Al/i-ZnO/CdS/Cu(In,Ga)(Se,S)2/Mo layer structure investigated. The results of this thesis were obtained within two independent projects with different industry partners each applying principally different processing technologies. In samples from (1) the sequential deposition-reaction process the sulfur composition of the annealing atmosphere was varied in order to realize a double band gap grading. (2) Devices from different co-evaporation chambers processed under nominal equal conditions yielded strong deviations in performance. A comprehensive characterization procedure was devised and applied in order to strategically identify the loss mechanisms in the solar cells. This procedure revealed that the performance in devices from both processing methods was determined by the specifics of the bandgap grading and the concentration of mid-gap defects.

Level thesis:degree_level

thesis.doctoral

Grantor dc:publisher

Universität Oldenburg

Year

2012

Author dc:creator

• Knecht, Robin

Contributors dc:contributor

• Parisi, Jürgen
• Schlettwein, Derck

• Chalcopyrite Solar Cells, Sulfurization, Co-evaporation, Mid-gap Defects, Bandgap grading

Repository record source_url

http://oops.uni-oldenburg.de/1442

OAI identifier oai:identifier

oai:oops.uni-oldenburg.de:1442