Tripurari Tripathi

• POSTDOCTORAL SCIENTIST, School of Chemical Science Technology, Aalto University, Espoo, Finland, 2014-08-01, 2018-08-01, Lead researcher in the ERC-funded projects, (i) novel thermoelectric energy solutions based on flexible thin-film materials: tes-flex thin; and (ii) molecular-layer-engineered inorganic-organic hybrid materials: layerenghybmat., Developed high-quality thin-film processes of oxides and chalcogenides for optical and thermoelectric applications., Managed the projects to keeping work on track pro-actively and independently with a systematic approach., Designed, developed, and calibrated a fully automated anisotropic electrical transport measurement setup for the use in superconducting quantum interference device (SQUID) with an accuracy of >95% and sensitivity >0.1µV/K., Analyzed the experimental data and published the results highlighting important information in high impact factor journals., Developed and communicated standard operating procedures to a team of 5., Supervised master's and Ph.D. students.
• RESEARCH ASSOCIATE, Materials Science Division, Inter-University Accelerator Centre, New Delhi, India, 2013-02-01, 2014-08-01, Lead researcher in the science and engineering research board of India funded-project: nano-structuring by energetic ion beams., Principal scientist to magnetic, electrical and thermal transport measurements., Conducted beam-line operations and maintenance., Supervision and technical guidance to Ph.D. students., Wrote technical presentations, manuscripts, and projects., Designed, developed, and calibrated setups for the Seebeck Effect and magnetic susceptibility measurements.
• RESEARCH ASSOCIATE, Department of Physics, National University of Singapore, Singapore, 2012-01-01, 2012-12-01, Senior researcher in the national research foundation Singapore funded-project: multiferroic and magnetoresistive heterostructure: materials and devices., Synthesized oxide materials in bulk powder, nanoparticles, and single crystal form., Analyzed experimental results and published the results in high impact journals., As an expert in thermoelectricity, I designed and calibrated a fully interfaced Seebeck Coefficient measurement setup., Designed an experimental setup for close cycle refrigerator (CCR), from 20K - 350K., Supervision and technical guidance to Ph.D. students., Wrote technical presentations, manuscripts, and projects.

• Magnetic properties of the thiospinel compound CuCr2Se4, T. S. Tripathi, G. C. Tewari, C. S. Yadav, and A. K. Rastogi, DAE Solid State Symposium at Barkatullah University, Bhopal, India, Proceedings of DAE Solid State Symposium, 51, 893, 2006
• A Magnetometer for Cryogen-free system: Extraction and Integration method, T. S. Tripathi, G. C. Tewari, and A. K. Rastogi, DAE Solid State Symposium at BARC, Mumbai, India, Proceedings of DAE Solid State Symposium, 53, 557, 2008
• The study of Magnon-drag effects in the Thermopower of CuCr2X4 (X = S, Se and Te)., T. S. Tripathi, G. C. Tewari, and A. K. Rastogi, International Conference on Magnetism (ICM-2009) at University of Karlsruhe, Germany, Journal of Physics: Conference Series, 200, 032060, 2010
• Electronic Transport Properties of Layered Antiferromagnet CuCrS2., G. C. Tewari, P. Kumar, T. S. Tripathi, A. K. Rastogi, DAE Solid State Physics Symposium at Manipal University, Manipal, India, AIP Conference Proceedings, 1349, 1059-1060, 2011
• Magnetoresistance, Magnetic entropy change and Critical exponents' analysis in the room temperature ferromagnet CuCr2Te4, T. S. Tripathi, R. Mahendiran, International Conference of Young Researchers on Advanced Materials (ICYRAM) Singapore, 2012
• Effect of Ag Doping and Annealing on Thermoelectric Properties of PbTe., Manju Bala, Srashti Gupta, T.S Tripathi, K. Asokan, Solid State Physics Symposium - at VIT University, Vellore, Tamil Nadu, India, AIP Conference Proceedings, 1665, 110047, 2015
• Structural, optical, and electrical transport properties of ALD fabricated thin films of CuCrO2., T. S. Tripathi, and Maarit Karppinen, International Conference on Magnetism at in Barcelona, Spain., Physics Procedia, 75, 488-494, 2015
• Structural, optical, and electrical transport properties of ALD fabricated thin films of CuCr2O4., T. S. Tripathi, and Maarit Karppinen, 13th International Baltic Conference on Atomic Layer Deposition at Tartu, Estonia., 2015
• Novel ALD process based on an organic reductant for in situ deposition of metallic copper thin films., T. S. Tripathi, and Maarit Karppinen, 15th International Baltic Conference on Atomic Layer Deposition at Linkoping, Sweden., 2017
• Observation of local electroluminescent cooling and identifying the remaining challenges., I. Radevici, T. Sadi, T. S. Tripathi, J. Tiira, S. Ranta, A. Tukiainen, M. Guina, J. Oksanen, SPIE OPTO, 2019, San Francisco, California, United States, Proc. of SPIE, 10936, 109360A-109360A9, 2019
• Towards high efficiency GaAs structures for electroluminescent cooling, V. Dagytė, I. Radevici, T. S. Tripathi, T. Sadi, J.Oksanen, The 18th European Workshop on Metal-Organic Vapour Phase Epitaxy (EW-MOVPE 18th) Vilnius, Lithuania, June 16-19, 2019, 2019

• Atomic Layer Deposition of Copper Metal Films from Cu(acac)2 and Hydroquinone Reductant T. S. Tripathi, M. Wilken, C. Hoppe, T. D. L. Arcos, G. Grundmeier, A. Devi, M. Karppinen, Advanced Engineering Materials 1438-1656 23 2100446 2021
• Mixed‐Anion Compounds: An Unexplored Playground for ALD Fabrication, Atomic Layer Deposition of Copper Metal Films from Cu(acac)2 and Hydroquinone Reductant T. S. Tripathi, M. Wilken, C. Hoppe, T. D. L. Arcos, G. Grundmeier, A. Devi, M. Karppinen, Advanced Engineering Materials 1438-1656 23 2100446 2021, M. Karppinen, 2196-7350, 11, 2100146, 2021
• Improving the efficiency of GaInP/GaAs light emitters using surface passivation., T. S. Tripathi, I. Radevici, V. Dagytė, T. Sadi, and J. Oksanen, IEEE Trans. on Elec. Dev., 67, 3667-3672, 2020
• New chemical mechanism explaining the breakdown of protective oxides on high temperature steels in biomass combustion and gasification plants., Tom Blomberg, T.S. Tripathi, M. Karppinen, RSC Advances, 9, 10034-10048, 2019
• Experimental setup for anisotropic thermoelectric transport measurements using MPMS., T.S. Tripathi, M. Karppinen, Meas. Sci. and Techn., 30, 025602 (7pp), 2019
• Semiconducting nature and thermal transport studies of ZrTe3, Hooda, Mandeep, T. S. Tripathi, C. S. Yadav, J. Alloy Compounds, 785, 603-609, 2019
• Electronic and vibrational properties of TiS2, ZrS2, and HfS2: Periodic trends studied by dispersion corrected hybrid density functional methods., N. Glebko, I. Aleksandroya, G. C. Tewari, T. S. Tripathi, M. Karppinen, and A. J. Karttunen, J. Phys. Chem. C, 122, (47) 26835-26844, 2018
• Microstructure and optical properties of ultrathin NiO films grown by atomic layer deposition., D. Hagen, T. S. Tripathi, I. Terasaki, M. Karppinen, Semicond. Sci. Technol., 33, 115015, 2018
• Time-effective synthesis of rhombohedral CuAlO2 from mesoporous alumina substrate., A. S. Shamshirgar, M. Aghayan, T. S. Tripathi, M. Karppinen, M. Gasik, I. Hussainova, Materials and Design, 147, 48-55, 2018
• Atomic Layer Deposition of CuS thin films from Elemental Sulfur., T. S. Tripathi, L. Jouko, M. Karppinen, Adv. Mater. Interfaces, 5(9), 1701366, 2018
• Atomic layer deposition of p-type semiconducting thin films: a review, T.S. Tripathi, M. Karppinen, Adv. Mater. Interfaces, 4, 1700300, 2017
• Evolution of nanostructured single phase CoSb3 thin-films by low energy ion-beam induced mixing and their thermoelectric performance., M. Bala, A. Bhogra, S. A. Khan, T. S. Tripathi, S. K. Tripathi, D. K. Avasthi, and K. Asokan, Phys. Chem. Chem. Phys., 19, 24886-24895, 2017
• Enhancement of thermoelectric power of PbTe thin films by Ag ion implantation., M. Bala, A. Bhogra, S. A. Khan, T. S. Tripathi, S. K. Tripathi, D. K. Avasthi, and K. Asokan, J. Appl. Phys., 121, 215301 (9p), 2017
• Efficient Process for Direct Atomic Layer Deposition of Metallic Cu Thin Films Based on an Organic Reductant., T.S. Tripathi, Maarit Karppinen, Chem. Mater., 29(3), 1230-1235, 2017
• Atomic layer deposition of nickel-cobalt spinel thin films with controlled electrical, thermoelectric, and magnetic properties., D. J. Hagen, T. S. Tripathi, and M. Karppinen, Dalton Trans., 46, (14) 4796-4805, 2017
• Enhanced p-Type Transparent Semiconducting Characteristics for ALD-Grown Mg-Substituted CuCrO2 Thin Films., T.S. Tripathi, Maarit Karppinen, Adv. Electron. Mater., 3, 160034, 2017
• Three-Dimensional Uracil Network with Sodium as a Linker., Z. Giedraityte, O. L. Acevedo, L. A. Espinosa Leal, V. Pale, J. Sainio, T. S. Tripathi, and M. Karppinen, J. Phys. Chem. C, 120, (46) 26342-26349, 2016
• Anomalous thickness-dependent optical energy gap of ALD-grown ultra-thin CuO films., T. S. Tripathi, I. Terasaki, M. Karppinen, J. Phys.: Cond. Matter, 28, 475801 (8p), 2016
• Transparent ferrimagnetic semiconducting CuCr2O4 thin films by atomic layer deposition., T. S. Tripathi, C.S. Yadav, M. Karppinen, APL Mater., 4, 046106, 2016
• Formation of nanodots and enhancement of thermoelectric power induced by ion irradiation in PbTe: Ag composite thin films., M. Bala, R. C. Meena, S. Gupta, C. Pannu, T. S. Tripathi, S. Verma, S. K. Tripathi, K. Asokan, D. K. Avasthi, Nuclear Instruments and Methods in Physics Research B, 379, 36-41, 2016
• Isovalent Ca and Ba substitutions in thermoelectric layer-structured oxyselenide Sr2CoO2Cu2Se2., Chou, Ta-Lei; Mustonen, Otto; T. S. Tripathi; Karppinen, Maarit, J. Phys.: Cond. Matter, 28, 035802, 2016
• Phase evolution and electrical properties of CoSb alloy fabricated from Co/Sb bilayers by thermal annealing and ion beam mixing., Manju Bala, Srashti Gupta, T. S. Tripathi, Sikha verma, S.K. Tripathi, K. Asokan and D. K. Avasthi, Phys. Chem. Chem. Phys., 17, 24427-24437, 2015
• Atomic Layer Deposition of Transparent Semiconducting Oxide CuCrO2 Thin Films., T. S. Tripathi, J.-P. Niemelä, M. Karppinen, J. Mater. Chem. C, 3, 8364-8371, 2015
• Enhancement of thermoelectric power of PbTe: Ag nanocomposite thin films., M. Bala, S. Gupta, T. S. Tripathi, S. Verma, S.K. Tripathi, K. Asokan and D. K. Avasthi, RSC Adv., 5, 25887-25895, 2015
• Magnetic entropy changes and critical exponents in double pervoskite manganite Y2NiMnO6., G. Sharma, T. S. Tripathi, J. Saha, and S. Patnaik, J. Mag. Magn. Mat., 368, 318-323, 2014
• An experimental setup for the simultaneous measurement of thermoelectric power of two samples from 77 K - 500 K., T. S. Tripathi, M. Bala, K. Asokan, Review of Scientific Instruments, 85, (8) 085115 (7p), 2014
• Thermoelectric Properties of Layered Antiferromagnetic CuCrSe2., G. C. Tewari, T. S. Tripathi, Hisao Yamauchi, & Maarit Karppinen, J. Mat. Chem. & Phys., 114, 156-161, 2014
• Correlation between Magnetoresistance and Magnetic entropy change in 3D-Hiesenberg ferromagnet CuCr2Te4., T.S. Tripathi, R. Mahendiran, A.K. Rastogi, J. Appl. Phys., 113, 233907 (5pp), 2013
• Influence of Ga doping on rare earth moment ordering and ferromagnetic transition in Nd0.7S0.3Co1-xGaxO3., Pawan Kumar, D.V. Maheswar, M. Aparnadevi, T.S. Tripathi, R. Mahendiran, J. Appl. Phys., 113, 17D702 (3p), 2013
• Magnetocaloric effect and Magneto-thermopower in the room temperature ferromagnet Pr0.6Sr0.4MnO3., D.V. Maheswar, T.S. Tripathi, M. Aparnadevi, R. Mahendiran, J. Appl. Phys., 112, 123915 (9p), 2012
• Normal and inverse MCE in the room temperature ferromagnet Pr0.58Sr0.42MnO3., D.V. Maheswar, M. Aparnadevi, Pawan Kumar, T.S. Tripathi, R. Mahendiran, J. Appl. Phys., 113, 17A906 (3p), 2013
• Magnetic properties of stuffed Copper Chromium Tellurides Cu1+xCr2+yTe4 (x = 0-1, y< 0.3)., T. S. Tripathi, G. C. Tewari and A. K. Rastogi, J. Mag. Magn. Mat., 323, 2300-2304, 2011
• Electronic transport properties of stuffed Copper Chromium Tellurides Cu1+xCr2Te4(x = 0 - 1)., T. S. Tripathi, G. C. Tewari and A. K. Rastogi, J. Mag. Magn. Mat., 323, 2669-2673, 2011
• Increase in thermoelectric efficiency in disordered phase of layered antiferromagnet CuCrS2., G. C. Tewari, T. S. Tripathi, P Kumar, A K Rastogi, S K Pasha, Govind Gupta, Journal of Elec. Mat., 40, 2368-2373, 2011
• Thermoelectric Properties of LayerAntiferromagnet CuCrS2., Girish C. Tewari, T. S. Tripathi, and A.K. Rastogi, Journal of Elec. Mat., 39(8), 1133-1139, 2010
• Effect of chromium disorder on the thermoelectric properties of layeredantiferromagnet CuCrS2., Girish C. Tewari, T. S. Tripathi, and A.K. Rastogi, Z. Kristallogr., 225, 471-474, 2010
• A magnetometer for cryogen-free systems: extraction and integration method., T. S. Tripathi, G. C. Tewari and A. K. Rastogi, CURRENT SCIENCE, 97, 144-147, 2009

Scientist with proven track record of impactful research and scientific contributions. Adept at designing and conducting complex experiments, contributing to advancements in field. Known for strong collaboration with team members and adaptability to changing research needs, ensuring successful project outcomes. Key skills include thin films and semiconductor devices fabrication techniques and scientific communication.

YOUNG SCIENTIST START-UP GRANT, Science and Engineering Research Board, India, 2017-2020, 

Project: Study of mixed anion compounds as promising thermoelectric materials and the fabrication of experimental setups for the measurement. 

2012-12-01, Department of Physics National University of Singapore, Performance bonus 

Payments are made in line with the National University of Singapore's policy of rewarding staff based on individual performance, merit, contributions., 

Senior and Junior Research Fellowship, Council of Scientific and Industrial Research, India, 2006-2011, 

The fellowship is VERY COMPETITIVE and provided for doctoral research to the top 10% candidates selected by the national eligibility test (NET).

• Achieved more than 10 times improvements in the external quantum efficiency of devices after high-quality processing and surface passivation.
• Developed several novel ALD processes for promising p-type semiconducting oxides and chalcogenides such as CuCrO2, CuCrMgO2, CuS and metals such as Copper.
• Achieved an appreciably high deposition rate of ∼2 Å/cycle for cooper metal films in a single step fabrication through an organic reducing agent.
• Fabricated and analayed the thin-film semiconducting devices deposited by ALD and processed through several lithography and pattering steps.
• Designed, developed, and automated fully automated setups for electrical transport and magnetic measurements such as (i) Experimental setup for anisotropic thermoelectric transport measurements using SQUID (https://doi.org/10.1088/1361-6501/aaf609). (ii) An experimental setup for the simultaneous measurement of thermoelectric power of two samples from 77 K - 500 K. (https://doi.org/10.1063/1.4891631) (iii) A magnetometer for cryogen-free systems: extraction and integration method. (https://inis.iaea.org/search/searchsinglerecord.aspx?recordsFor=SingleRecord&RN=40024729
• Supervised team of 5 members.