Mr. Keshav Nagpal

Junior Research Fellow & PhD student at the Institute of Forestry and Engineering (EMÜ)


Estonian University of Life Sciences

Institute of Forestry and Engineering, Chair of Energy Application Engineering
Fr.R.Kreutzwaldi 56, Tartu 51006, ESTONIA

ORCID: 0000-0003-0040-9984



  • Ph.D. studies in Engineering Sciences at Institute of Forestry and Engineering, Estonian University of Life Sciences, Tartu (10.2020-….)
  • BS-MS dual degree studies at Indian Institute of Science Education and Research (IISER), Mohali, India (08.2013 – 05.2018)

Present fields of research

  • Hydrothermal and precipitation methods based synthesis of nanoparticles (ZnO & CuO)
  • Morphology, optoelectronic and I-V characterization of as synthesized nanoparticles
  • Combining nanoparticles with CNT and polymers for LED and PV applications.

Present projects


Defended Master students:

– Mr. Taavi Murel (2023-2024): Optical and electrical properties of ZnO nanorods

– Mr. Henno Kaeval (2021-2023): Photoelectric Properties of ZnO Nanorods

Honors and awards

  • 2018, Science and Engineering Research Board (SERB) scholarship, BITS Goa, India (2018-2019)
  • 2013, Innovation in Science Pursuit for Inspired Research (INSPIRE) Scholarship, IISER Mohali, India (2013-2018)


1. Publication in the group:

  • « Fabrication and evaluation of figures of merit of ZnO polymer-based hybrid UV photodiodes » K. Nagpal, E. Rauwel, F. Ducroquet, I. Gelard and P. Rauwel, Applied Physics Letters Materials  12, 061109 (2024) [REF]
  • « Relevance of alcoholic solvents in the growth of ZnO nanoparticles and ZnO hierarchical nanorod structures on their optical and opto-electrical properties » K. Nagpal, E. Rauwel, F. Ducroquet, I. Gelard and P. Rauwel, Nanotechnology  34, 485602 (2023) [REF]
  • «Revealing the Dependency of Dye Adsorption and Photocatalytic Activity of ZnO Nanoparticles on Their Morphology and Defect States » Y. Hendrix, E. Rauwel, K. Nagpal, R. Haddad, E. Estephan, C. Boissière, P. Rauwel, Nanomaterials  13(13), 1998 (2023) [REF]
  • « Significance of Hydroxyl Groups on the Optical Properties of ZnO Nanoparticles Combined with CNT and PEDOT:PSS » K. Nagpal, E. Rauwel, E. Estephan, M. R. Soares, P. Rauwel  Nanomaterials  12, 3546 (2022) [REF]
  • « Investigation of the optical and antibacterial properties of biosynthesized ZnO nanoparticles using Thuja tincture » K. Nagpal, M. S. Rosario, K. Praakle, E. Rauwel, P. Rauwel Journal of Physics: Conference Series 2315, 012016 (2022) [REF]
  • « The role of CNT in surface defect passivation and UV emission intensification of ZnO nanoparticles » K. Nagpal, L. Rapenne, D. S. Wragg, E. Rauwel, P. Rauwel, Nanomaterials and Nanotechnology, Vol. 12, 1–10 (2022) [REF]
  • «Assessment of the optical and electrical properties of light emitting diodes containing carbon-based nanostructures and plasmonic nanoparticles: a review »K. Nagpal, E. Rauwel, F. Ducroquet and Protima Rauwel, Beilstein J. Nanotechnol. 12, 1078–1092 (2021) [REF]

2. Former publication

  • «Anomalous conductance induced by hydrogen on ZnO and catalysed ZnO nanoflowers» A. Roshini, K. Nagpal, E. S. Kannan, EPL (Europhysics Letters) 127, 57005 (2019) 57005 [REF]