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Nur Tahirah Razali, the school of Materials science has receiverd the CEMS Rising Star Award in the CEMS International Symposium on Supramolecular Chemistry and Functional Materials 2013.

Nur Tahirah Razali, the third-doctoral student of the school of Materials science(Murata Laboratory) has receiverd the CEMS Rising Star Award in the CEMS International Symposium on Supramolecular Chemistry and Functional Materials 2013.

CEMS International Symposium on Supramolecular Chemistry & Functional Materials 2013 is the first symposium organized by RIKEN Center for Emergent Matter Science (CEMS). The aim of this symposium is to provide a scientific forum to exchange and share experiences, ideas, and research results from the distinguished speakers, to discuss recent advances and the scientific challenges encountered in this field, to identify the future research directions, to promote scientific exchange among the participants, and also to initiate some important collaborative research projects. The CEMS Rising Star Award are given to the participants that present best and most interesting research posters.

[Prized date]
December 15, 2013
[Prized title]
Efficient Inverted Bulk Heterojunction Organic Solar Cells Fabricated by Lamination of Metal Leaf
Lamination of top electrodes in inverted bulk heterojunction organic solar cells is a suitable alternative to vacuum deposition to reduce the production cost of devices. In this work, we demonstrate that laminated gold leaf can act as the top electrode to replace the expensive conventional evaporated gold process. Gold leaves are placed on the surface of the ITO/TiOx/P3HT: PCBM/PEDOT: PSS substrate and rolled through the lamination machine at a roller speed of 1.5 rpm, 100 °C and with applied pressure of 0.1 MPa. We achieved comparable power conversion efficiency (PCE) between evaporated and laminated devices (3.11 % and 2.98 %, respectively). When using PNTz4T as the acceptor, the PCE of evaporated and laminated devices are further improved up to 4.22% and 4.06%, respectively. These results show that the gold leaf has good contact with the P3HT:PCBM/PEDOT:PSS surface. The laminated devices which were fabricated in air exhibit similar trend of stability with the evaporated devices. Lamination using gold leaf not only produce devices with the comparable device performance and stability to that fabricated by an evaporation process but also could save a lot of production cost, time and materials.
I would like thank the CEMS ISSC & FM 2013 for organizing such informative symposium and also for the award. I would also like to express my great appreciation to Prof. Hideyuki Murata and Dr. Varun Vohra for their guidance, encouragement and valuable critiques and advice throughout this work. Special thanks to Prof. Kazuo Takimiya and Assoc. Prof. Itaru Osaka for the great collaboration. Finally, I wish to thank my family, friends and Murata lab members for their continuous support.

Ms. Nur Tahirah Razali holding her plaque

Ms. Nur Tahirah Razali at the award ceremony

January 15, 2014