The hottest structure of 2019

At APS March last year, Pablo Jarillo-Herrero reported superconductivity in graphene bilayers. Soon after this, hundreds of publications were published on arXiv, with theorists trying to understand the phenomenon, and experimentalists trying to reproduce the effect and observe different properties on new materials. A few weeks ago, at APS March 2019, there were more than […]

Why are excitons important?

In the applied physics of semiconductors, two types of carriers with similar properties but with opposite charge, take part in the optical and electrical phenomena: electrons and holes. In halide perovskite, as well as in organic semiconductors, the main carrier contributions arise from excitons. One may think about these as bound state of coupled electrons […]

The papers that made 2018

The perovskite field has been evolving so rapidly that it’s been hard to follow all its evolution. Here I give a list of the papers published last year that I think advanced perovskite research and marked the important research milestone. I also extended this list to other papers I’ve particularly enjoyed reading in 2018. Halide […]

Band-gap Tuning for Tandem Perovskites

Tuning the active materials for the engineering of tandem solar cells is an arising field of research among the perovskite community. In this post, I present the main targets of tandem solar cells engineering: band-gap tuning. Then, I showcase two solutions that have been reported by students I am currently working with. Tandem Solar Cells […]

Are DSSC still growing ?

First reported in 1991 by Prof. Michael Graetzel from EPFL, Lausanne (Switzerland), Dye sensitised Solar Cells (DSSC) have known important developments in the late 1990s ans early 2000s. Then the field began to falter, the community having massively preferred turning to organic and then Perovskite solar cells. Here I present how DSSCs are working and […]

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 […]

Beyond the Shockley-Queisser limit

As I said in the introduction, I will publish presentation, that are blog posts in which I will expose research articles or specific fields of research. This article is the first of the series and is about Xu et al article: The generalized Shockley-Queisser limit for nanostructured solar cells, Sci. Rep. As I said last […]