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The University of Electro-Communications  Graduate School of Informatics and Engineering, School of Informatics and Engineering  Department of Engineering Science, Cluster III （Fundamental Science and Engineering）

Assistant Professor  Varun VOHRA  Year of birth:1984   Tel.042-443-5359     Personal website   Personal website

■ Academic degrees DEUG equivalent in Materials Science Possibility to pass the exam for prestigious engineering schools in France  Chaptal (Classe Préparatoire aux Grandes Ecoles)  2003/06/27  Engineering Diploma in Materials Science (Polymer speciality)  European School of Chemistry, Polymers and Materials  2006/09/15  Master's Degree in Materials Science  Louis Pasteur University  2006/09/22  PhD in Materials Science  Milano-Bicocca University  2009/12/17    ■ Current research areas Device related chemistry  Composite materials/Surface and interface engineering  Structural/Functional materials  Material processing/Microstructural control engineering    ■ Current research subjects Multi-level self-assembled systems  2006/11/01-2009/12/17  Zeolite L based organic/inorganic hybrid system to enhance the PL properties of organic dye molecules.  electro-spinning  2006/11/01-Present  Process to produce various types of functional polymeric nanofibers. white-light emitting nanofibers, electro luminescent nanofibers.  Polymer-Polymer self-assembly  2006/11/01-Present  Breath Figures Array (BFA) Electrospun self-assembled nanofibers Formation of nanostructures through polymer-polymer self-assembly (phase separation)  organic light emitting devices  2007/09/01-Present  Development of new and innovative types of light-emitting devices based on conjugated polymer materials. Integration of conjugated polymer nanofibers into device architecture.  Organic Solar Cells  2010/05/15-Present  Formation of donor-acceptor concentration gradients in active layers. New materials for OPV New Device architectures Molecular orientation and morphology of the active layer    ■ Published books Book  Interface Engineering: A Key Aspect for the Potential Commercialization of Printable Organic Photovoltaic Cells  Varun VOHRA, Nur Tahirah Razali, Hideyuki Murata  Wiley-Scrivener  2017/05  Book  Systematic study of organic solar cells cross-section by EDS to correlate donor-acceptor vertical concentration gradients and device performances  Varun VOHRA Nur Tahirah Razali Hideyuki Murata  One Central Press  2017/01  978-1-910086-19-3  Book  Chemical Science of π-Electron Systems  Varun Vohra, Koichi Higashimine, Keisuke Ohdaira, Shogo Tsuzaki, Hideyuki Murata  Springer  2015  978-4-431-55356-4  View details...   ■ Published papers Paper  Yes  All solution-processed micro-structured flexible electrodes for low-cost light-emitting pressure sensors fabrication  Rie Shimotsu, Takahiro Takumi, Varun Vohra  Scientific Reports  7, 6921-  2017/07/31  Paper  Yes  Low-Cost and Green Fabrication of Polymer Electronic Devices by Push-Coating of the Polymer Active Layers  Varun Vohra, Wojciech Mroz, Shusei Inaba, William Porzio, Umberto Giovanella, Francesco Galeotti  ACS Applied Materials & Interfaces  9, 25434-25444  2017/07/07  Paper  Yes  Fabrication Processes to Generate Concentration Gradients in Polymer Solar Cell Active Layers  Shusei Inaba Varun Vohra  Materials  10/ 5, 518-  2017/05/09  Paper  Yes  Transfer-printing of active layers to achieve high quality interfaces in sequentially deposited multilayer inverted polymer solar cells fabricated in air  Varun Vohra, Takuya Anzai, Shusei Inaba, William Porzio & Luisa Barba  Science and Technology of Advanced Materials  17, 530-540  2016/09/12  Paper  Yes  Investigating phase separation and structural coloration of self-assembled ternary polymer thin films  Varun Vohra, Francesco Galeotti, Umberto Giovanella, Takuya Anzai, Erika Kozma and Chiara Botta  Applied Physics Letters  109, 103702-  2016/09/08  View details...   ■ Research presentations Oral presentation for an academic conference  PDMS based processes to reach the requirements for commercialization of polymer solar cells  AMN8-8th International Conference on Advanced Materials and Nanotechnology  S16/ 01  Yes  VOHRA Varun  2017/02/14  Oral presentation for an academic conference  Nanostructured PDMS and its application to nanopixel OLED and pressure sensor fabrication  Nano S&T 2016  102/ II  Yes  VOHRA Varun  2016/10/27  Oral presentation for an academic conference  Amphiphilic low band-gap rod-coil block copolymers: a tool for water-processable organic solar cells  XXII CONVEGNO NAZIONALE DELL’ASSOCIAZIONE ITALIANA DI SCIENZA E TECNOLOGIA DELLE MACROMOLECOLE  無し  Yes  Stefania Zappia, Guido Scavia, Umberto Giovanella, Varun Vohra, Silvia Destri  2016/09/14  Oral presentation for an academic conference  大気化においてトランスファープリントで作製された適切なド ナー・アクセプター濃度勾配の逆型有機薄膜太陽電池  第77回応用物理学会秋季学術講演会  Yes  安齊 拓也, 稲葉 柊生, William Porzio, Varun Vohra  2016/09/14  Oral presentation for an academic conference  Biomimetic photonic thin films from polymer-polymer self-assembly  NANOSMAT2016  Yes  Varun VOHRA, Francesco GALEOTTI, Chiara BOTTA  2016/09/08  View details...