日本語
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)" 

顔写真 Associate Professor 
Varun VOHRA 

Year of birth:1984  
Tel.042-443-5359  
 

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  Metal oxides and noble metals application in organic solar cells  Popoti J.Maake, Amogelang S.Bolokang, Christopher J.Arendse, VarunVohra, Emmanuel I.Iwuoha, David E.Motaung  Solar Energy  207, 347-366  2020/09/01 
Paper  Yes  Water-Processed Organic Solar Cells with Open-Circuit Voltages Exceeding 1.3V  Varun Vohra Shunsuke Shimizu Yuko Takeoka  Coatings  10, 421-  2020/04/24  10.3390/coatings10040421 
Paper  Yes  Durable organic solar cells produced by in-situ encapsulation of an air-sensitive natural organic semiconductor by the fullerene derivative and the metal oxide layer  Takayuki Uchiyama Takashi Sano Yoshiko Okada-Shudo Varun Vohra  Journal of Materials Chemistry C  8, 7162-7169  2020/04/21  10.1039/D0TC00379D 
Paper  Yes  Effect of Alkyl Side Chain Length on Intra and Inter-Molecular Interactions of Terthiophene-Isoindigo Copolymers  Joint  Newayemedhin A. Tegegne Zelalem Abdissa Wendimagegn Mammo Takayuki Uchiyama Yoshiko Okada-Shudo Francesco Galeotti William Porzio Mats R Andersson Derck Schlettwein Varun Vohra Heinrich Schwoerer  Journal of Physical Chemistry C  124, 9644-9655  2020/04/14  10.1021/acs.jpcc.9b11072 
Paper  Yes  High performance organic solar cells fabricated using recycled transparent conductive substrates  Takada, Tomoaki Uchiyama, Takayuki Okada-Shudo, Yoshiko Hoshino, Katsuhito Koizumi, Ko Takeoka, Yuko Vohra, Varun  ACS Sustainable Chemistry & Engineering  8, 5807-5814  2020/03/25  10.1021/acssuschemeng.0c01966 
View details...

Research presentations
Oral presentation for an academic conference  Recycling of Costly Transparent Electrode Substrates from Degraded Organic Solar Cells  Online Summit on Recycling and Waste Management  Day 1/ Session 2  Yes  Varun Vohra, Tomoaki Takada  2020/07/02 
Oral presentation for an academic conference  Green & Sustainable Fabrication of Organic Solar Cells  Online Summit on Carbon Materials and Nanotechnology  Session 2/ Invited 1  Yes  Varun Vohra, Shusei Inaba, Yumi Matsunaga, Tomoaki Takada  2020/06/30 
Oral presentation for an academic conference  Simple strategies to produce efficient, green & sustainable organic photovoltaic devices  Advanced Materials Lecture Series 2020  IAAM Fellow Lecture  Yes  2020/06/10 
Oral presentation for an academic conference  Towards sustainable and low-cost semitransparent photovoltaic windows produced with environmental-friendly processes  The 9th Conference on Nanomaterials (CN-BT 2019)  Keynote Speech-18  Yes  2019/12/15 
Oral presentation for an academic conference  Green & sustainable fabrication of organic electronic devices by push-coating  30th Assembly of Advanced Materials Congress  IAAM Award lecture  Yes  Varun Vohra, Shusei Inaba, Takayuki Uchiyama, Yoshiko Okada  2019/11/01 
View details...

Awards
UEC学生表彰候補者  2019 
エヌエフ基金 研究開発奨励賞 優秀賞  低コスト光発電窓のグリーン&サステナブル作製を実現した研究  2019/11/22 
IAAM Award  Green & sustainable fabrication of organic electronic devices by push-coating  2019/11/01 
Green and Sustainable Chemistry Challenge (Top 5 entries)  Highly sustainable PV windows employing natural dyes  2019/05/06 
平成30年度先進理工学専攻光工学プログラム修士論文 目黒会優秀発表  プッシュコート法による環境に配慮した低コスト有機太陽電池の作製  2019/02/07 
View details...