1 Department of Energy Conversion and Storage, Technical University of Denmark2 Functional organic materials, Department of Energy Conversion and Storage, Technical University of Denmark3 Microsystems4 Bangor University5 Cyprus University of Technology6 Federal University of Parana7 Addis Ababa University8 University of Padua9 Peking University10 Chinese Academy of Sciences11 National Taiwan University12 Commonwealth Scientific and Industrial Research Organisation13 Dresden University of Technology14 Dutch Polymer Institute15 University of Groningen16 Freidrich-Alexander-University of Erlangen-Nürnberg17 Universidad Autonoma de Barcelona18 University of Southern California19 Jawaharlal Nehru Centre for Advanced Scientific Research20 Holst Center21 Technical University of Cartagena22 Ilmenau University of Technology23 Agenzia nazionale per le nuove tecnologie, l’energia e lo sviluppo economico sostenibile24 Northeastern University25 American University of Armenia26 University of Queensland27 Graz University of Technology28 European Commission - Joint Research Center29 Ben-Gurion University of the Negev30 Kanagawa Academy of Science & Technology31 Energy Research Centre of the Netherlands32 Hasselt University33 Moscow Lomonosov State University34 National Physical Laboratory35 Imperial College London36 Wuhan University37 TÜBİTAK Marmara Research Center38 BELECTRIC OPV GmbH39 Pomona College40 Inside2Outside Ltd.41 Zhejiang University42 Fraunhofer Gesellschaft43 Université de Bordeaux44 University of Wollongong45 Technische Universität Chemnitz46 CSEM Muttenz47 Bangor University48 Cyprus University of Technology49 Addis Ababa University50 Peking University51 National Taiwan University52 Jawaharlal Nehru Centre for Advanced Scientific Research53 Northeastern University54 Graz University of Technology55 Ben-Gurion University of the Negev56 Hasselt University57 Imperial College London
Accurate characterization and reporting of organic photovoltaic (OPV) device performance remains one of the important challenges in the field. The large spread among the efficiencies of devices with the same structure reported by different groups is significantly caused by different procedures and equipment used during testing. The presented article addresses this issue by offering a new method of device testing using “suitcase sample” approach combined with outdoor testing that limits the diversity of the equipment, and a strict measurement protocol. A round robin outdoor characterization of roll-to-roll coated OPV cells and modules conducted among 46 laboratories worldwide is presented, where the samples and the testing equipment were integrated in a compact suitcase that served both as a sample transportation tool and as a holder and test equipment during testing. In addition, an internet based coordination was used via plasticphotovoltaics.org that allowed fast and efficient communication among participants and provided a controlled reporting format for the results that eased the analysis of the data. The reported deviations among the laboratories were limited to 5% when compared to the Si reference device integrated in the suitcase and were up to 8% when calculated using the local irradiance data. Therefore, this method offers a fast, cheap and efficient tool for sample sharing and testing that allows conducting outdoor measurements of OPV devices in a reproducible manner.
Solar Energy Materials and Solar Cells, 2014, Vol 130, p. 281-290