HOPV 15 Conference in Rome

2 09 2014
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HOPV15 CONFERENCE Abstract submission opened
Hybrid and Organic Photovoltaics Conference
10-13 May 2015, Rome, Italy
Thrilling news in the perovskite area! Let us meet in the center of Rome on May 2015 for HOPV Conference.

Many of you know that HOPV (Hybrid and Organics Photovoltaic Conference) has been consolidated since 2009 as a unique forum for the advances in hybrid and organic photovoltaics. Now the HOPV15 Conference chairs, Filippo de Angelis and Mike McGehee, kindly invite you to present your latest research and participate in a major event in Rome, 10-13 May 2014. Of course the generous progress of perovskite solar cells will form a key part of the conference. But let’s not forget the basics. The research continues very promisingly in a variety of topics that will have a balanced presence in the conference, including perovskite and quantum dot solar cells, dye-sensitized solar cells, small molecular organic solar cells, hybrid organic-inorganic and nanostructured devices, bulk heterojunction polymer solar cells, and related field as solar fuel production catalysts and devices.

The conference format is a full three days, multiple symposia meeting, with outstanding figures of the field as keynotes and invited speakers, and with also room for plenty of contributed talks by participant scientists and unlimited poster presentation. The meeting gathered 620 participants and 20 companies of the field in 2014. In 2015 the conference unique setting in the center of Rome will provide an excellent opportunity for updates, major announcements of progress, and plenty of discussions. And do not forget the legendary HOPV parties. Next year we will celebrate that we meet all colleagues and friends having a social dinner in an amazing Barroque Palace.

Conference chairs:
Filippo De Angelis.
ISTM-CNR Perugia, Italy
Michael McGehee
Stanford School of Engineering, USA
 Conference Dinner
Wednesday night features the Social Dinner at Palazzo Brancaccio. Be sure to book your ticket during registration and meet new people, or renew old friendships or simply enjoy yourselves.
High-ranking invited speakers providing details about the major revolution to the field of organic-inorganic photovoltaics for an inspiring conference.
 Confirmed Keynote Speakers
Michael Grätzel. EPFL

Martin Green. University of New South Wales

Daniel Nocera. Harvard University

 Confirmed Invited Speakers
Hironori Arakawa. Tokyo University of Science

Thomas Bein. Department of Chemistry University of Munich

David Cahen. Weizmann Institute of Science

James Durrant. Imperial College London

Jacky Even. Institut National des Sciences Appliquées de Renne

Germà Garcia Belmonte. Universitat Jaume I

Joseph Hupp. Northwestern University

Antoine Kahn. Princeton University

Prashant V. Kamat. University of Notre Dame

Mercouri G. Kanatzidis. Northwestern University

Jaejung Ko. Korea University

Guglielmo Lanzani. Istituto Italiano di Tecnologia

Jenny Nelson. Imperial College London

Thuc-Quyen Nguyen. University of California

Nam-Gyu Park. Sungkyunkwan University

Andrew Rappe. University of Pennsylvania

Alberto Salleo. Stanford University

Henry J. Snaith. Department of Physics, University of Oxford

 Oral contributions
In addition, in the field of organic-inorganic photovoltaics, 96 high level selected oral contributions will take part of this leading photovoltaic community.

Please register as soon as possible in order to benefit from the early registration fees of the forthcoming 7th edition of the Hybrid and Organic Photovoltaics to be held in Rome, from 10th to 13thMay 2015. Submit your abstract for oral presentation or poster contribution at the one of the most imperative conference in transformative photovoltaics technologies. Online abstract submission is now opened.

More details athttp://www.nanoge.org/HOPV15/info_abstract.php

 My Meeting Checklist
 Want to exhibit or be a sponsor?
We provide you with an excellent opportunity to market your instruments at the HOPV 2015 conference (http://www.nanoge.org/HOPV15/index.php) where you will meet more than 600 scientists who work exclusively on solar energy projects. We encourage you to contact us for more details at hopv15@nanoge.org

Capacitive currents and hysteresis in solar cells

25 08 2014

14 08 25 Capacitive currents in solar cells

This is part of my presentation at

Gordon Research Conference: Electron Donor-Acceptor Interactions, Newport, USA, August 3-8, 2014

It is a short illustration of the capacitive currents that may be very significant for perovskite solar cells.

Recently Hui-Seon Kim and Nam-Gyu Park have argued similarly in

Parameters Affecting IV Hysteresis of CH3NH3PbI3 Perovskite Solar Cells: Effects of Perovskite Crystal Size and Mesoporous TiO2 Layer

J. Phys. Chem. Lett., 2014, 5, pp 2927–2934

Best Practices for Reporting on Heterogeneous Photocatalysis

20 08 2014

Best Practices for Reporting on Heterogeneous Photocatalysis


Jillian M. Buriak (Editor-in-Chief, Chemistry of Materials) ,
University of Alberta
Prashant V. Kamat (Deputy Editor, The Journal of Physical Chemistry Letters) ,
University of Notre Dame
Kirk S. Schanze (Editor-in-Chief, ACS Applied Materials & Interfaces)
University of Florida
ACS Appl. Mater. Interfaces, 2014, 6 (15), pp 11815–11816
DOI: 10.1021/am504389z

Mariam Mirzakhani wins the Field Medal of Mathematics

13 08 2014

A professor of mathematics at Stanford University in California, iranian-native Mariam Mirzakhani won the 2014 Field Medal of Mathematics and becomes the first woman winner. The panel appreciated the Mirzakhani’s innovative contributions in the dynamics and geometry of Riemann surfaces and their moduli spaces.

The Fields Medal is awarded every 4 years to at most 4 mathematicians under 40 years. It is regarded as the highest honor a mathematician can receive.

more information


Organic photoelectrochemical cells for solar fuel production

7 08 2014

Organic donor-acceptor blends like P3HT-PCBM have been greatly improved in recent years providing high efficiency and stable solar cells. These materials are cheap and versatile. They can be very promising for the production of solar fuels. To this aim the photocurrent must be extracted to an electrolyte to produce the required chemical reactions in solution. This is different than the normal operation of PV cells with two solid contacts. We have developed an important step in this direction showing that the photocurrent of standard organic blends can be extracted quantitatively to a liquid contact for either oxidative or reductive action. We show the extraction of 4 mA cm2 in an organic photoelectrochemcial cell (OPEC) which is the same that the solar cell produces at 1 sun without reflective back layer. This is just a first step , as it is required to find suitable catalytic/protective layers at the organic/liquid interface for water splitting or CO2 reduction, say. But we believe there is a great potential in this system for solar energy conversion.

Organic photoelectrochemical cells with quantitative photocarrier conversion

Antonio Guerrero,   Marta Haro,   Sebastiano Bellani,  Maria Rosa Antognazza,   Laura Meda,   Sixto Gimenez and  Juan Bisquert  
Energy Environ. Sci., 2014

DOI: 10.1039/C4EE01775G
First published online 07 Aug 2014

EES 10 1039C4EE01775G



Capacitance of perovskite solar cells

31 07 2014

There have been many questions in conferences about the capacitance of perovskite solar cells, as the show very surprising properties. We have studied this matter for some time and now we give an opinion at the level of theory, also confirmed by experimental data.


Theory of Impedance and Capacitance Spectroscopy of Solar Cells with Dielectric Relaxation, Drift-Diffusion Transport and Recombination

Juan Bisquert , Luca Bertoluzzi , Ivan Mora-Sero , and Germà Garcia-Belmonte
J. Phys. Chem. C, Just Accepted Manuscript
DOI: 10.1021/jp5062144
Publication Date (Web): July 30, 2014
capacitance perovskite
Semiconductor photovoltaic devices currently investigated, such as hybrid organic-inorganic lead halide perovskite based solar cells, have shown a high dielectric polarization combined with ambipolar carrier transport. In this work we present a new model that takes into account both features by combining the classical drift-diffusion equation with a generalized Poisson equation that involves a density and frequency dependent dielectric constant that accounts for the polarization of the medium. We derive the corresponding transmission line (TL) and analyse the associated complex plane impedance spectroscopy (IS) and capacitance spectra. The standard dielectric constant is replaced by the dielectric relaxation element that depends on the frequency, which provides a dielectric relaxation subcircuit in the middle rail of the TL. After simplification of the TL, three arcs can be observed: the first one, at low frequency, is associated to the dielectric relaxation process, the second one, at intermediate frequency, is the drift-diffusion/recombination arc and the last one, at high frequency, corresponds to the geometric capacitance in parallel with transport resistances for both electrons and holes. In the case in which only two semicircles are observed, the parameters that can be extracted are the recombination and dielectric relaxation resistances along with the chemical and dielectric relaxation capacitances. The density dependent static dielectric constant gives rise to current generators that produce exotic impedance spectra associated to inductive behaviour. These results provide a major tool for the determination of physical characteristics of lead halide perovskite solar cells.

DOE Energy Frontier Research Centers awarded

4 07 2014

U.S. Energy Secretary Ernest Moniz today announced the awarding of $100 million for Energy Frontier Research Centers (EFRCs) to accelerate the scientific breakthroughs needed to build the 21st-century energy economy


Energy Frontier Research Centers (EFRCs)


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