Sagar Bhattarai
Verified email at gmail.com
Assistant Professor and HoD, Department of Physics
Arunachal University of Studies
Dr. Sagar Bhattarai was born in T.K. Grant (North Guwahati). He is an expert in optoelectronic devices. His research area is Organic Solar Cells, Perovskite Solar Cells, OLED, and III-V semiconductors. He has published more than 20 research papers in various international and national journals till now. He is currently working as an Assistant Professor of Physics at Arunachal University of Studies, Namsai, Arunachal Pradesh (India).
EDUCATION
PhD in Physics
RESEARCH INTERESTS
Condensed Matter Physis, Computational Physics, III-V Semiconductor
FUTURE PROJECTS
Perovskite solar cells
Researchers worldwide have been interested in perovskite solar cells (PSCs) due to their exceptional photovoltaic (PV) performance. The PSCs are the next generation of the PV market as they can produce power with performance that is on par with the best silicon solar cells while costing less than silicon solar cells. The efficiency of PSCs has increased from 3.81% to 25.7% within a decade, demonstrating their immense potential. In this review, the advantages of PSCs and the evolution of efficiency with various configuration are summarized and discussed. The manufacture of PSCs on a large scale and the fabrication of perovskite films are described as well. Despite their advantages, PSCs have encountered numerous problems, including toxicity and degradation in the presence of moisture, oxygen, and UV light. Thus, we emphasize this line added to the difficulties preventing the commercialization of PSCs, as well as the road map towards commercialization are thoroughly examined.
Applications Invited
Renewable Energy
Applications Invited
Tandem solar cell, Quantum Dot solar cell
Applications Invited
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Sagar Bhattarai, Asya Mhamdi, Ismail Hossain, Yassine Raoui, Rahul Pandey, Jaya Madan, Abdelaziz Bouazizi, Madhusudan Maiti, Dipankar Gogoi, and Arvind Sharma
Micro and Nanostructures, eISSN: 27730123, Volume: 172, Published: December 2022
Elsevier BV
Sagar Bhattarai, Rahul Pandey, Jaya Madan, Firdausa Ahmed, and Shahnaz Shabnam
Materials Today Communications, eISSN: 23524928, Published: December 2022
Elsevier BV
Arvind Sharma, Sagar Bhattarai, and T. D. Das
Indian Journal of Physics, ISSN: 09731458, eISSN: 09749845, Pages: 4315-4326, Published: December 2022
Springer Science and Business Media LLC
Sagar Bhattarai, Rahul Pandey, Jaya Madan, Deboraj Muchahary, and Dipankar Gogoi
Solar Energy, ISSN: 0038092X, Volume: 244, Pages: 255-263, Published: 15 September 2022
Elsevier BV
Sagar Bhattarai, Rahul Pandey, Jaya Madan, Asya Mhamdi, Abdelaziz Bouazizi, Deboraj Muchahary, Dipankar Gogoi, Arvind Sharma, and T. D. Das
IEEE Transactions on Electron Devices, ISSN: 00189383, eISSN: 15579646, Pages: 3217-3224, Published: 1 June 2022
Institute of Electrical and Electronics Engineers (IEEE)
This present work emphasizes the numerical modeling of lead-free methylammonium tin tri-iodide (MASnI3)-based perovskite solar cells (PSCs) under optimizing preconditions. The prior selection of the perovskite material of MASnI3 is feasible for a more extended absorption spectrum due to a smaller bandgap of 1.3 eV than higher bandgap methylammonium lead tri-iodide (MAPbI3)-based PSC and the factor of lesser toxicity. Furthermore, to enhance the efficiency of the device, selecting potentially steadier and superior carrier transport materials (CTMs) is among the most effective approaches for optimizing device outputs. Among the proposed materials, a prior selection of copper antimony sulfide (CuSbS2) and zinc oxide (ZnO) as CTMs with an optimized thickness of MASnI3 material has offered a higher power conversion efficiency (PCE) of 22.16% under the photoillumination AM1.5. Furthermore, the less-defective PSC device can also be helpful for further device optimization and futuristic development.
Deboraj Muchahary, Lakum Sai Ram, Rewrewa Narzary, Partha Pratim Sahu, Sagar Bhattarai, and Shubham Tayal
Current Applied Physics, ISSN: 15671739, Pages: 15-21, Published: June 2022
Elsevier BV
Monika Gogoi, Sagar Bhattarai, and T.D. Das
Materials Today: Proceedings, eISSN: 22147853, Published: 2022
Elsevier BV
Dipankar Gogoi, Sagar Bhattarai, Hrishikesh Kalita, and T.D. Das
Materials Today: Proceedings, eISSN: 22147853, Published: 2022
Elsevier BV
Dipankar Gogoi, Sagar Bhattarai, and T.D. Das
Materials Today: Proceedings, eISSN: 22147853, Pages: 280-289, Published: January 2022
Elsevier BV
Sagar Bhattarai, Arvind Sharma, P. K. Swain, and T. D. Das
Journal of Electronic Materials, ISSN: 03615235, eISSN: 1543186X, Pages: 6756-6765, Published: December 2021
Springer Science and Business Media LLC
Sagar Bhattarai, Arvind Sharma, Deboraj Muchahary, Monika Gogoi, and T.D. Das
Optik, ISSN: 00304026, Volume: 243, Published: October 2021
Elsevier BV
Sagar Bhattarai, Arvind Sharma, Deboraj Muchahary, Dipankar Gogoi, and T.D. Das
Optical Materials, ISSN: 09253467, Volume: 118, Published: August 2021
Elsevier BV
Sagar Bhattarai and T.D. Das
Solar Energy, ISSN: 0038092X, Volume: 217, Pages: 200-207, Published: 15 March 2021
Elsevier BV
Sagar Bhattarai and T.D. Das
Optical Materials, ISSN: 09253467, Volume: 111, Published: January 2021
Elsevier BV
Sagar Bhattarai, Arvind Sharma, and T.D. Das
Optik, ISSN: 00304026, Volume: 224, Published: December 2020
Elsevier BV
Sagar Bhattarai, Arvind Sharma, and T. D. Das
AIP Conference Proceedings, ISSN: 0094243X, eISSN: 15517616, Volume: 2269, Published: 12 October 2020
AIP Publishing
Arvind Sharma, Sagar Bhattarai, and T. D. Das
AIP Conference Proceedings, ISSN: 0094243X, eISSN: 15517616, Volume: 2269, Published: 12 October 2020
AIP Publishing
Sagar Bhattarai, Arvind Sharma, and T. D. Das
Lecture Notes in Electrical Engineering, ISSN: 18761100, eISSN: 18761119, Volume: 686, Pages: 965-971, Published: 2020
Springer Singapore