The main objective of the Action is to create an interdisciplinary network of laboratories and industry that studies the degradation mechanisms of Organic Solar Cells. Specific objectives for this working group are monitoring the latest advances in the OPV field to ensure the network is working within the state-of-the-art and find distinctive degradation patterns. To achieve this objective, a collaborative activity consiting in creating an up-to-date database that collects all data published about OPV degradation has been proposed. A literature review will be performed following this proposal.
1. Materials and device configuration
An OPV device consists of several different organic materials that are sandwiched between inorganic electrodes and can be configured in various ways. For the planned experiments materials and the device configuration will be defined for all partners based on state-of-the-art devices. As more and more organic materials for OPV are synthesised and other device configurations are developed, new materials developments concerning active layer and charge transporting interlayers will be monitored in order to make sure that the consortium is working on state-of-the-art materials and industrially-relevant challenges. Another objective of this WG will be to find general degradation patterns distinctive for a certain material or family of materials combining the knowledge of the Action and latest reports in literature. Special focus will be given to those new materials with the possibility to meet the requirements of next generation OPV devices, these are, materials that can give high photovoltaic performance, synthesized through green chemistry and easily processable, and most importantly, intrinsically stable.
2. Degradation protocols and industrial requirements
Degradation protocols and standards are applied in accordance with the current ISOS recommendations and future IEC standard(s). As evolution in the testing conditions is expected during the course of the Action, the technology monitoring will also focus on any breakthroughs in accelerated testing methods, degradation protocols and standards evolving in the field. The insight into the requirement for industrial application of OPVs will be gained through regular networking events and industrial days as well as from technology and industrial reports.
3. Characterization methods
If any new characterization technique becomes known that is very useful for studying degradation, it will be considered for future integration within this Action at specific partners’ institutions or by inviting new members.
To be aware of the most recent advances in OPV materials, characterization methods and device development. Overview of the latest development will be included in the annual report.
1. Literature review on stability of OPV
In the 2nd MC / 1st WG Meeting held in Barcelona in October 2014, the Action members detected the need for a database to:
i) Store the data of stability and degradation of OPV
ii) Start storing data for new architecture devices such as perovskites that can significantly influence the evolution of pronted photovoltaics in the future
It was agreed to make a coorperative literature review as an outcome of WG1. This review will aim to the creation of a more complete and up-to-date database about stability and degradation of organic solar cells.
One outcome of this work will be the identification of patterns of degradation of the OPVs and, eventually, overcome the mechanisms that origin it. The results will be used to write a review-type publication, of which all participants will be co-authors.
A similar work was conducted at DTU a couple of years ago, and we will build on this database that contains articles published up to 2012. This proprietay DTU database will host the data. A solar cell scan tool and other plotting tools to exploit the data are, however, made available. Morten Vesterager (from DTU) and Lucia Serrano (from UPCT, at DTU in a STSM in April 2015) have adapted the existing database.
New articles from 2013 to March 2015, not yet analised, have been extracted from Scopus using the following search:
“(degradation OR lifetime OR ageing OR stability) AND (organic* OR plastic* OR polymer* OR (smaill molecule*)) AND ((solar cell) OR photovoltaic* OR opv)”
The search gave back a total of 1800 articles whose citations were extracted and uploaded to be analysed for the participants.
An online webinar was organised to provide instructions on how to scan articles, extract relevant information and update the OPV database with new studies of stability and degradation. Drs. Lucia Serrano, Morten Vesterager, Suren Gevorgyan and Nieves Espinosa as WG1 coordinator participated in the webinar. The seminar was recorded and is avaiblable online.
Suplementary information given at the webinar can be found here.
B) Completion and update of the database
The work has started and, up to now, more than 100 papers have already been scanned. The deadline to complete the database is 31st August 2015.
C) List of participants
|Achileas Savva||Cyprus University of Technology|
|Alberto Gregori||Université de Pau et des Pays de l’Adour|
|Andressa Antunes Bortoti||Institut Català de Nanociència i Nanotecnologia|
|Bérenger Roth||Technical University of Denmark|
|Brian Azzopardi||Malta College of Arts, Science and Technology|
|Charusheela Ramanan||Vrije Universiteit Amsterdam|
|Daniel Fluhr||Technische Universität Ilmenau|
|Dechan Angmo||Technical University of Denmark|
|Efthymios Georgiou||Cyprus University of Technology|
|Elizabeth von Hauff||Vrije Universiteit Amsterdam|
|Francesca Brunetti||University of Rome Tor Vergata|
|Francesco Livi||Technical University of Denmark|
|Francesco Pastorelli||Technical University of Denmark|
|Gisele Alves dos Reis Benatto||Technical University of Denmark|
|Harald Hoppe||Technische Universität Ilmenau|
|Ignasi Burgués||Cyprus University of Technology|
|Jean Charles Obscur||XLIM|
|Laura Ciammaruchi||Ben Gurion University of the Negev|
|Lea Hildebrandt Rossander||Technical University of Denmark|
|Lucia Serrano||Universidad Politécnica de Cartagena|
|Luís Silvino Alves Marques||University of Minho|
|Marta Ramos||University of Minho|
|Michael Corazza||Technical University of Denmark|
|Michail Beliatis||Technical University of Denmark|
|Morten Vesterager Madsen||Technical University of Denmark|
|Nieves Espinosa||Technical University of Denmark|
|Philippe Leclère||Université de Mons|
|Ravi Misra||Ben Gurion University of the Negev|
|Roland Rösch||Technische Universität Ilmenau|
|Stylianos Tsopanidis||University of Minho|
|Suren Gevorgyan||Technical University of Denmark|
|Thomas Brown||University of Rome Tor Vergata|
|Thue Trofod Larsen-Olsen||Technical University of Denmark|
|Veniero Lenzi||University of Minho|
|Yulia Galagan||Holst Centre|