2134/37227
Rachael Greenhalgh
Rachael
Greenhalgh
Ali Abbas
Ali
Abbas
Amit Munshi
Amit
Munshi
Tushar M. Shimpi
Tushar M.
Shimpi
Kurt L. Barth
Kurt L.
Barth
Walajabad S. Sampath
Walajabad S.
Sampath
Jake Bowers
Jake
Bowers
Michael Walls
Michael
Walls
Activation of thin film CdTe solar cells using a cadmium bromide treatment
Loughborough University
2019
CdTe
CdBr2
Activation
TEM
EQE
EDX
Mechanical Engineering not elsewhere classified
2019-03-18 14:35:18
Conference contribution
https://repository.lboro.ac.uk/articles/conference_contribution/Activation_of_thin_film_CdTe_solar_cells_using_a_cadmium_bromide_treatment/9557624
The activation of CdTe with a cadmium chloride
annealing treatment is a vital step in the fabrication of high
efficiency solar cells. Thin film MZO/CdTe cells have been
activated using CdBr2 instead of CdCl2 with a lower activation
process temperature. Using this method, CdBr2 does activate the
cell as revealed by J-V and EQE measurements. TEM and EDX
elemental maps from device cross-sections confirm that bromine
is present in the grain boundaries. TEM shows that the
treatment removes stacking faults at 425 °C. CdBr2 treatment
resulted in a relatively modest conversion efficiency of 5.49%
when treated at 375 °C. Nevertheless, the experiments shed
further light on the mechanisms involved in the activation.