SALD Markets

Spatial ALD also offers many opportunities in upcoming solar cell markets such as organic, perovskite, and silicon-perovskite tandem photovoltaics (PV). Ultra thin charge transport layers, surface passivation and moisture barrier layers are the essential inter-layers that can be processed with spatial ALD. To maximize the stability and power output of the perovskite absorber layer these thin films are essential Moreover, organic and perovskite solar cells provide the opportunity for flexible applications such as building integrated photovoltaics (BIPV) whereas in tandem configuration a perovskite with a traditional Si solar cells can reach substantially higher cell efficiency.

For the breakthrough of perovskite solar cell technology high density (barrier-like) metal oxide inter-layers, processed by Spatial ALD, will ensure higher stability and longer device lifetime. In parallel, Spatial ALD can be used to apply moisture and oxygen barrier as a direct encapsulation, for example as a replacement for the present pricey laminated barrier foils. This allows, among others, organic and perovskite solar cells to be protected from the ingress of moisture at lower production costs.