9 research outputs found
Investigations of the main loss mechanisms in Cu2ZnSn S,Se 4 solar cells spray coated from water ethanol based ink Reducing the density of defects to reach efficiencies close to 10
No full textIs the Cu/Zn disorder the main culprit for the voltage deficit in kesterite solar cells?
No full textFine Tuning the Sn Content in CZTSSe Thin Films to Achieve 10.8 Solar Cell Efficiency from Spray Deposited Water Ethanol Based Colloidal Inks
No full textOn Charge Carrier Recombination in Sb2S3 and Its Implication for the Performance of Solar Cells
No full textInternational audienceSb2S3 is widely considered to be an attractive photovoltaic material based on abundant, nontoxic elements. However, the maximum efficiency reported for solar cells based on this semiconductor does not exceed 6.5%. We have measured light intensity-dependent J-V curves, transient microwave photoconductivity, steady-state photocurrent grating, modulated photocurrent, and photoconductivity on Sb2S3-based samples. All techniques converge toward the same observation: the main recombination route controlling the density of charge carriers in the absorber is of an order greater than one and appears to stem from an exponentially decaying density of tail states within the conduction band of the material. This conclusion has direct and drastic implications for the performance of Sb2S3-based solar cells
