This page is updated and maintained by CHELLAPPAN Vijila.
Name: Dr. CHELLAPPAN Vijila
Designation: Scientist III
Capability Group / Department: Analysis & Characterisation
Address: 3 Research Link
Singapore 117602
Tel: (65) 6874-8355
Research Interests/Areas
  • Optoelectronic  Device Physics
  • Advanced Energy Materials and Devices
  • Photophysics in semiconductor materials
  • Electrical and optical characterisation techniques
Specialised Expertise
  • Organic Optoelectronic Devices (Solar Cells,OTFT, LED)
  • Charge transport and recombination studies using Time of Flight (TOF) Photoconductivity, Photoinduced Charge Extraction by Linearly Increasing Voltage (PhotoCELIV) technique and Dark Injection space charge limited current (DI-SCLC) techniques.
  • Transient Absorption and Photoluminescence spectroscopy
  • Deep Level Transient Spectroscopy (DLTS)
  • Device physics: Electrical properties and metal/organic interfaces
  • Excited State Photophysics
  • Organic Photovoltaics
    • Charge transport and Recombination Studies
    • Metal-Organic Interfaces
    • Device Physics
    • Excited state Photophysics
  • Printed Electronics
    • Electrical properties
    • Effect of traps/dopents on device performances
  • Characterization of trap levels in GaN based HEMT’s using DLTS
Working Experience
  • Apr 2012 - To- Date
  • Scientist III, IMRE, Singapore
  • Apr 2011 - Mar 2012
  • Scientist II (RSE-III), IMRE, Singapore
  • Apr 2009 - Mar 2011
  • Senior Research Engineer (RSE-III), IMRE, Singapore
  • Jan 2007 - Mar 2009
  • Senior Research Engineer (RSE-II), IMRE, Singapore
  • Jan 2003 - Dec 2006
  • Research Associate, IMRE, Singapore
  • Sep 2001 -Dec 2002
  • Post Doctoral Research Fellow, Abo Akademy University, Turku, Finland
Academic Qualifications
  • Ph.D (Laser Technology), Anna University, Tamil Nadu, India, 2001
  • M.Sc (Physics), Presidency College, (University of Madras), Tamil Nadu, India, 1995
  • B.Sc (Physics), Women's Christian College, Nagercoil (M.S University), Tamil Nadu, India, 1993
Honours and Awards
  • 2008
  • Marquis Who's Who in Science and Engineering
  • 2006
  • Outstanding Contribution Partner Award from National Junior College, Singapore
  • 2005
  • Outstanding Contribution Partner Award from National Junior College, Singapore
Other Professional Appointments / Membership
  • 2003-Current
  • Member, MRS-Singapore
  • 2008-Current
  • Member, American Chemical Society
Selected Publications


•   Naveen Kumar Elumalai, Tan Mein Jin, Vijila Chellappan, Rajan Jose, Suresh Kumar Palaniswamy, Sundaramurthy Jayaraman, Hemant Kumar Raut, Seeram Ramakrishna, ‘Electrospun ZnO Nanowire Plantations in the Electron Transport Layer for High-Efficiency Inverted Organic Solar Cells’, ACS Appl. Mater. Interfaces, 5, 9396−9404 (2013).

• Mein Jin Tan, Shu Zhong, Rui Wang, Zhongxing Zhang, Vijila Chellappan, Wei Chen, ‘Biopolymer as an electron selective layer for inverted polymer solar cells’, Applied Physics Letters, 106,063303-4, (2013).

• Evan L Williams, Sergey Gorelik, InYee Phang, Michel Bosman, Chellappan  Vijila, Gomathy Sandhya Subramanian, Prashant Sonar, Jonathan Hobley, Samarendra P Singh, Hiroyuki Matsuzaki, Akihiro Furube, Ryuzi Katoh, ‘Nanoscale phase domain structure and associated device performance of organic solar cells based on a diketopyrrolopyrrole polymer, RSC Adv.,3 (43), 20113-20124, (2013).

• Naveen Kumar Elumalai, Amitaksha Saha, Vijila Chellappan, Jose Rajan, Jie Zhang, Seeram Ramakrishna, ‘Enhancing the stability of polymer solar cells by improving the conductivity of the nanostructured MoO3 hole-transport layer’, Phys. Chem. Chem. Phys., 15, 6831-6841, (2013).

• Luong T. H. Nguyen, Shilin Chen, Naveen K. Elumalai, Molamma P. Prabhakaran, Yun Zong, C Vijila, Suleyman I. Allakhverdiev, Seeram Ramakrishna, ‘Biological, Chemical, and Electronic Applications of Nanofibers’, Macromol. Mater. Eng., 298, 822–867, (2013).

• R. S. Kajen, N. Chandrasekhar, K. L. Pey, C. Vijila, M. Jaiswal, S. Saravanan, Andrew M. H. Ng, C. P. Wong, and K. P. Loh, ‘Charge transport in lightly reduced graphene oxide: A transport energy perspective’ Journal of Applied Physics 113, 063710 (2013).

• R. S. Kajen, N. Chandrasekhar, K. L. Pey, C. Vijila, M. Jaiswal, S. Saravanan, Andrew M. H. Ng, C. P. Wong, and K. P. Loh, ‘Trap Levels in Graphene Oxide: A Thermally Stimulated Current Study’, ECS Solid State Letters, 2 (2) M17-M19 (2013).

• P. S. Archana, E. Naveen Kumar, C. Vijila, S. Ramakrishna, M. M. Yusoff and R. Jose, ‘Random nanowires of nickel doped TiO2 with high surface area and electron mobility for high efficiency dye-sensitized solar cells’ Dalton Transactions,42, 1024-1032, (2013).

• E. Naveen Kumar Elumalai, R Jose, P. S. Archana, Vijila C, and Seeram Ramakrishna,‘Charge Transport through Electrospun SnO2 Nanoflowers and Nanofibers: Role of Surface Trap Density on Electron Transport Dynamics’ J. Phys. Chem. C, 116, 22112−22120, (2012)

• E. Naveen Kumar, L Man Yin, Vijila C, Zhang Jie, Z. Peining, and S. Ramakrishna, ‘Effect of C60 as an electron buffer layer in polythiophene-methanofullerene based bulk heterojunction solar cells’, Phys. Status Solidi A 209, 8, 1592–1597, (2012).

• R.S. Kajen, N. Chandrasekhar, Ming Hua Ng, Seok Hong Goh, Kin Leong Pey and C.Vijila, ‘Ballistic Electron Emission Microscopy Study of Charge Transport Across an Au/Graphene-Oxide/Modified-Si Stack’, ECS Solid State Lett.1, 2, M13-15, (2012).

• R. S. Kajen, N. Chandrasekhar, K. L. Pey and C.Vijila, ‘Trap Energy Levels in Graphene Oxide Determined by Ballistic Electron Emission Spectroscopy’ ECS Solid State Lett.1, 5, M27-M28, (2012).

• Zhen Fang, C.Vijila, Richard D.Webster, Lin Ke, Tianfu Zhang,Bin Liu and Yee-Hing Lai, ‘Bridged-triarylamine starburstoligomers as hole transporting materials for electroluminescentdevices’ J. Mater.Chem., 22, 15397, (2012).

• E. Naveen Kumar, R. Jose, P. S. Archana, C. Vijila, M. M. Yusoff and S. Ramakrishna, ‘High performance dye-sensitized solar cells with record open circuit voltage using tin oxide nanoflowers developed by electrospinning’ Energy &Environmental Science, 5, 5401, (2012).

• Mein Jin Tan, Wei Peng Goh, Jun Li, Gaurav Pundir, C. Vijila and Zhikuan Chen, Charge mobility and recombination in a new hole transporting polymer and its photovoltaic blend, ACS:Applied Materials and Interfaces, 2, 1414-1420, (2010).

• P. S. Archana, R. Jose, T. Mein Jin, C. Vijila, S. Ramakrishna, ‘Structural and Electrical Properties of Nb-doped Anatase TiO2 Nanowires by Electrospinning’ Journal of American Ceramic society, Vol. 93 (12), 4096 - 4102, (2010).

• Ganapathy Balaji, Manoj Parameswaran, Tan Mein Jin, C. Vijila, Zhu Furong, and Suresh Valiyaveettil, ‘Synthesis and Hole-Transporting Properties of Highly Fluorescent N-Aryl Dithieno[3,2-b:2′,3′-d]pyrrole-Based Oligomers’J. Phys. Chem. C, 114, 4628–4635, (2010).

• Vijila C, Ging Meng Ng, Mein Jin Tan, Wei-Peng Goh, and Furong Zhu, ‘Imbalanced charge mobility in oxygen treated polythiophene/fullerene based bulk heterojunction solar cells’ Applied Physics Letters, 95, 263305,(2009).

• P. S. Archana, R. Jose, C. Vijila, and S. Ramakrishna, ‘Improved Electron Diffusion Coefficient in Electrospun TiO2 Nanowires’ J. Phys. Chem. C, 113, 21538–21542, (2009).

• Manoj Parameswaran a, Ganapathy Balaji a, Sajini Vadukumpully a, Suresh Valiyaveetil, Tan Mein Jin, C.Vijila, Zhu Furong, ‘Charge transport studies in fluorene–Dithieno[3,2-b:2,3-d] pyrrole-oligomer using time-of-flight photoconductivity method’, Organic Electronics 10, 1534–1540, (2009).

• Weihua Tang, Vijila C, Minghui Liu, Zhi-Kuan Chen, and Lin Ke, ‘Hole Transport in Poly[2,7-(9,9-dihexylfluorene)- alt-bithiophene] and High-Efficiency Polymer Solar Cells from Its Blends with PCBM’,
ACS: Applied Materials and Interfaces, 1 1467–1473, (2009).


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Last updated on 1 Nov 2013 2:33 PM