Dresden 2020 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 24: Layer Properties II: Optical Properties

DS 24.4: Vortrag

Mittwoch, 18. März 2020, 11:45–12:00, CHE 91

Metastability in Kesterite solar cells and dominant recombination process at open circuit voltage. — •Mbafan Samantha Lyam — Photovoltaics group, Martin Luther University, Halle-Wittenberg, 06120 Halle (Saale), Germany. — Department of Physics, Benue state University, Makurdi, PMB 102119, Nigeria.

kesterite solar cells (Cu2ZnSn(S,Se)4) have been investigated with the aim of determining meta-stability response and the dominant recombination path of the cells via open circuit voltage transients, admittance spectroscopy, capacitance voltage profiling techniques and current-voltage analysis. Exposure to red light was used to induce meta-stability and thereafter, the resulting slopes of the open circuit voltage transients, in combination with the diode quality factor and activation energy of the saturation current density obtained from fits of measured current-voltage curves, give insight into which region of recombination limits the cells at open circuit voltage.