Progress in perovskite solar cells

25 10 2013

The perspective by Henry Snaith in JPCL gives a profound analysis of the genesis and future development of the perovskite solar cells.

J. Phys. Chem. Lett., Articles ASAP (As Soon As Publishable), pp 3623–3630
Publication Date (Web): October 10, 2013 (Perspective)
DOI: 10.1021/jz4020162
The editorial by Prashant Kamat describes some considerations of long term cost-effectiveness of PV technologies

Evolution of Perovskite Photovoltaics and Decrease in Energy Payback Time

Prashant V. Kamat
J. Phys. Chem. Lett., 2013, 4 (21), pp 3733–3734
DOI: 10.1021/jz402141s
Two important papers have appeared in Science journal. Henry et al. have found the diffusion length of the material slabs using transient absorption methods. The Singapore group did the same. The questions about the performance of different compositions and morphologies continue and become even more interesting.
Science 18 October 2013:
Vol. 342 no. 6156 pp. 341-344
DOI: 10.1126/science.1243982

The Marcus model applied to recombination in sensitized solar cells

14 10 2013

I am very happy to announce the publication of a summary of the theory of recombination in dye solar cells, in cooperation with Nobel laureate Prof. Ruddy Marcus. Here we expose the models from the basic ideas of electron transfer launched by Marcus in 1956, to the application of charge transfer in semiconductor/electrolyte with disorder, that forms the basics for an understanding of the measurements of lifetime and recombination resistance in dye solar cells. We also review the application of the theory in sound experiments.

I also wish to highlight the contributions of many friends and coworkers that have provided insights and key measurements, like Pedro Salvador, Arie Zaban, Francisco Fabregat-Santiago, Mehdi Ansari-Rad, Tom Hamann, and many others.

Furthermore I think these ideas will be extremely useful to attack new classes of solar cells that have become  high fashion and interest.

Topics in Current Chemistry 2013


Device Modeling of Dye/Sensitized Solar Cells

Juan Bisquert, Rudolph A. Marcus


We review the concepts and methods of modeling of the dye-sensitized solar cell, starting from fundamental electron transfer theory, and using phenomenological transport-conservation equations. The models revised here are aimed at describing the components of the current–voltage curve of the solar cell, based on small perturbation experimental methods, and to such an end, a range of phenomena occurring in the nanoparticulate electron transport materials, and at interfaces, are covered. Disorder plays a major role in the definition of kinetic parameters, and we introduce single particle as well as collective function definitions of diffusion coefficient and electron lifetime. Based on these fundamental considerations, applied tools of analysis of impedance spectroscopy are described, and we outline in detail the theory of recombination via surface states that is successful to describe the measured recombination resistance and lifetime.

HOPV14 in Lausanne

2 10 2013

We have been planning the HOPV 14 at Lausanne, with Prof. Grätzel and Prof. Nazeeruddin as scientific organizers.

You can already register for this great event

And do not miss the great boat party in the lake!

JB and M. K. Nazeerudin in boat dinner in Lausanne

JB and M. K. Nazeeruddin in boat dinner in Lausanne