Stability

Strangely at this conference in Europe there was no mention of the latest work on stability using lattice or other methods Ive posted on here over the past month or so.

The big challenge,” said Ballif, “is long-term stability.” The efficiency results measured by IMT “stabilized for a few seconds, not for thousands of hours.”

Ricky Dunbar from the PV Performance Laboratory of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) in Newcastle, Australia confirmed the problems with perovskite cells: “It is difficult to measure the efficiency accurately. It’s degrading as you measure.”

Ballif admitted: “At this point, I cannot guarantee that the stability will ever reach 25 years.” If the issue of degradation cannot be solved, perovskite cells will remain a playground for scientists, but not become the hoped-for turbo charger for industrial silicon solar cells.

Dr. Jef Poortmans, Scientific Director photovoltaics at imec, told PV Tech that it was too early in the study analysis of perovskite cell stability issues to comment on the outcome.

According to Dr. Poortmans, attention is being placed on the active layer and issues such as pin holes to establish perovskite cells manufacturability.

http://www.pv-tech.org/news/eu_pvsec_stable_efficiency_remains_major_hurdle_for_perovskite_cells