Risk Factors Associated With Leishmaniasis

Abstract

Lack of proven stability has become a major obstacle on the path of metal halide perovskite solar cells (PSCs), in particu- lar methylammonium lead triiodide (MAPbI3 ), towards com- mercial viability. This correlates with the intrinsic affinity of MAPbI3 towards moisture, leading to its degradation in am- bient conditions. We performed extensive stability tests to prove the durability of hole-conductor-free PSCs based on a triple-layer architecture employing carbon as a back con- tact, including outdoor tests in the hot desert climate and indoor long-term light soaking as well as heat exposure during 3 months at 80–858C. These results show no evidence for device degradation under the test conditions, confirming that the triple-layer device architecture provides a promising path towards realizing efficient and stable perovskite photo- voltaics.