Sagar Bhattarai
Verified @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, Rahul Pandey, Jaya Madan, Girija Shankar Sahoo, Ismail Hossain, Saikh Mohammad Wabaidur, and Mohd Zahid Ansari
Materials Today Communications, eISSN: 23524928, Published: June 2023
Elsevier BV
M. Khalid Hossain, Mustafa K. A. Mohammed, Rahul Pandey, A. A. Arnab, M. H. K. Rubel, K. M. Hossain, Md Hasan Ali, Md. Ferdous Rahman, H. Bencherif, Jaya Madan, Md. Rasidul Islam, D. P. Samajdar, and Sagar Bhattarai
Energy and Fuels, ISSN: 08870624, eISSN: 15205029, Pages: 6078-6098, Published: 20 April 2023
American Chemical Society (ACS)
M. Khalid Hossain, G. F. Ishraque Toki, Jaya Madan, Rahul Pandey, H. Bencherif, Mustafa K. A. Mohammed, Md. Rasidul Islam, M. H. K. Rubel, Md. Ferdous Rahman, Sagar Bhattarai, and D. P. Samajdar
New Journal of Chemistry, ISSN: 11440546, eISSN: 13699261, Pages: 8602-8624, Published: 30 March 2023
Royal Society of Chemistry (RSC)
A comparative analysis along with the optimization of various parameters for 8 different Cs-halide perovskite absorber-based solar cells is performed using a SCAPS-1D simulator, where ZnO and CFTS are proposed as ETL and HTL materials, respectively.
Deboraj Muchahary, Sagar Bhattarai, Arvind Sharma, and Ajay Kumar Mahato
Organic and Inorganic Light Emitting Diodes: Reliability Issues and Performance Enhancement, Pages: 1-50, Published: 1 January 2023
CRC Press
M. Khalid Hossain, G. F. Ishraque Toki, D. P. Samajdar, M. H. K. Rubel, M. Mushtaq, Md. Rasidul Islam, Md. Ferdous Rahman, Sagar Bhattarai, H. Bencherif, Mustafa K. A. Mohammed, Rahul Pandey, and Jaya Madan
Energy and Fuels, ISSN: 08870624, eISSN: 15205029, Published: 2023
American Chemical Society (ACS)
Sagar Bhattarai, Dipankar Gogoi, Arvind Sharma, and T. D. Das
Indian Journal of Physics, ISSN: 09731458, eISSN: 09749845, Published: 2023
Springer Science and Business Media LLC
Sagar Bhattarai, Ismail Hossain, Madhusudan Maiti, Rahul Pandey, and Jaya Madan
Indian Journal of Physics, ISSN: 09731458, eISSN: 09749845, Published: 2023
Springer Science and Business Media LLC
Monika Gogoi, Sagar Bhattarai, and T.D. Das
Materials Today: Proceedings, eISSN: 22147853, Pages: 604-607, Published: January 2023
Elsevier BV
Dipankar Gogoi, Sagar Bhattarai, Hrishikesh Kalita, and T.D. Das
Materials Today: Proceedings, eISSN: 22147853, Pages: 553-561, Published: January 2023
Elsevier BV
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
Rahul Pandey, Sagar Bhattarai, Kulbhushan Sharma, Jaya Madan, Ali K. Al-Mousoi, Mustafa K. A. Mohammed, and M. Khalid Hossain
ACS Applied Electronic Materials, eISSN: 26376113, Published: 2022
American Chemical Society (ACS)
Deboraj Muchahary, Sagar Bhattarai, Ajay Kumar Mahato, and Santanu Maity
Emerging Materials: Design, Characterization and Applications, Pages: 361-406, Published: 1 January 2022
Springer Nature Singapore
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