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 […]

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 […]

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 […]

Proposal: Graphene Sheets with Halide Perovskite Layers

Some months ago, I had conversations with some researchers to propose them a graduate project proposal that could be done within the scope of a PhD. I have been admitted at the University of Manchester to carry out this project under the supervision of Prof Sir Andre K. Geim and Prof Irina V. Grigorieva. I have […]

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: […]

Defect tolerance within halide perovskite

The properties of crystalline semiconductors, and particularly those giving rise to the photoelectric effect, are mainly due to the presence of defects inside a crystalline lattice. Two weeks ago, at the annual Perovskite Solar Cells and Optoelectronics Conference (#PSCO17) in Oxford, one of the main topic developed was the exceptional defect tolerance found in the […]

Exploring Excitonic Binding Energy in Perovskites

As usually described on this blog, perovskite solar cells represent a topic that constantly needs optimization. Many studies try to bring new elements for improving their stability or their efficiency. Some month ago, Dr Arman M. Soufiani from UNSW (Sydney) published an interesting article: ‘Impact of microstructure on the electron-hole interaction in lead halide perovskites’ […]

Perspective: Is Perovksite Fever Over?

I started this blog two months ago to share my opinion and enthusiasm about third generation photovoltaic technologies. In fact last year I used to ask questions to some of my teachers about perovskite solar cells, and each time, they were very sceptic about it and told me that the topic exploded some years ago, […]

Engineering interfaces with gold nanoparticles

When discussing interfaces issues with perovskite solar cells, Prof. Iván Mora-Seró from Institute of Advanced Materials, Castelló (Spain) is one of the scientists with the stronger background. Some month ago, he explored the use of gold nanoparticles at the interface between the electron sensitive contact and the perovskite material TiO₂ in perovskite solar cells. Eliminating […]

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 […]