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Dyesol Achieves Perovskite "˜lab-to-fab' Milestone

Solar cell samples survive 1000 hours accelerated testing with less than 10 percent relative degradation in efficiency

Dyesol, an Australian maker of perovskite solar cells (PSC), has recently passed a milestone in taking its technology from "˜lab-to-fab'.

While previous development activities have focused on proving efficiency of core PSC architectures at meaningful scale and volume, the company says it is now validating the stability of these high-performing cells with industrially relevant areas.

Multiple batches strip cells with >10 percent efficiency at 1 cm2 size (masked) were encapsulated and subjected to continuous light soaking at full sun intensity for over 1000 hours. All of these batches of strip cells were constructed using one of Dyesol's perovskite solar cells architectures.

All of the batches survived over 1000 hours under this accelerated test condition with less than 10 percent relative degradation in efficiency over the duration of the test.

According to Dyesol, this is an important sub-test towards meeting IEC 61646 accreditation - the most established international measure for PV durability validation. Dyesol's focus for the near-term is to further expand both this stability work as well as other stability validation tests.

Dyesol's chief technical officer, Damion Milliken, commented: "This achievement gives us confidence to accelerate development and scale-up of our preferred low-cost and easily produced PSC technology architecture, as we've now reproducibly, both within and between batches, proven that the system is inherently photo-stable in larger 1 cm2 cells with high efficiency of >10 percent."

These achievements will be presented on 10 September 2015 at a Swiss Photonics Workshop on Lifetime and Reliability Issues in PV by one of Dyesol's research staff, Adrianna Paracchino.

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