CHEETAH WEBINAR - Electrical characterization of thin film solar cells and absorbers
Webinar - May, 10th 2017 - 11:00 – 12:10 CET
Dr. Stephan Buecheler, Dr. Thomas P. Weiss
EMPA, Eidgenössische Materialprüfungs- und Forschungsanstalt - Laboratory for Thin Films & Photovoltaics
Characterization of thin film solar cells exhibits a number of challenges compared to Si solar cells. Recombinative interfaces, band alignment and barriers for example caused by hetero interfaces, may have a great impact on various measurements. Being aware of these complications will help in drawing false conclusions from measurement data.
The course will cover the following topics and analysis procedures:
IV – Current – Voltage: the evaluation of the IV curve in the framework of the 1-diode model. Deviations from the 1-diode model.
CV – Capacitance voltage: the analysis of the built-in voltage and the doping density by analyzing the voltage dependence of the capacitance
TAS – Thermal admittance spectroscopy: the detection of deep defects within in the bulk of the absorber and possible barriers in the solar cell structure