A Few Notes on Photo-induced Phase Segregation

Tandem solar cells are a very promising technology that would allow to overpass the Shockley-Queisser efficiency limit for photovoltaic devices. They can be manufactured by stacking two solar devices, one of low band-gap (to absorb low-energy photons), on top of which is placed a high band-gap absorber (that would absorb the high-energy photons, therefore reducing […]

Understanding degradation of perovskites

Degradation of perovskite has been a well-developed topic on this blog. Actually, it represents one of the greatest challenges to address. Scientists try to tackle the degradation issues from many approach angles. Here I showcase two articles I’ve read in the past months about how the lattice evolves and how it leads to cell degradation: […]

OPV stability, an intriguing mechanical approach

Two weeks ago, we discussed the stability issues of Perovskite Solar Cells. I invite you to keep connection with stability, but with organic solar cells. I found a very interesting work combining different techniques and analysis, from Dr. Sylvain Chambon. Let’s go back to Bordeaux, the southwestern French Organic Electronics’ City where he based his […]

Stay positive about stability of perovskite solar cells!

Some weeks ago, I had a conversation of deep interest with Dr Tomas Leijtens from Stanford University. Tomas has important research expertise in perovskite stability. Thus he wrote some month ago a review about it: Towards enabling stable lead halide perovskite solar cells; the interplay between structural, environmental, and thermal stability. The point to understand […]