Stigma and Mental Illness. Stigma has been defined as an attribute that is deeply discrediting.1 This stigmatized trait sets the bearer apart from the rest of society, bringing with it feelings of shame and isolation.
The performance of metal halide perovskite solar cells has made rapid increases in energy conversion efficiency, improving from under 4% efficiency in 2010 to a record efficiency of 22% in 2016. Because of the high absorption coefficient, a thickness of only about 500 nm is needed to absorb solar energy.
The Fe and Mo atoms have ordered in a 3D chessboard type fashion. Layered perovskites consist of infinite 2D slabs of the ABO3 type structure which are separated by some motif. The general formula for the layers is: A (n-1) B (n) O (3n+1) .he double perovskite structure is so named because the unit cell of is twice that of perovskite. It has the same architeture of 12 coordinate A sites and 6 coordinate B sites, but two cations are ordered on the B site. The example shown here is Sr 2 FeMoO 6 (download cif).