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
27

Scopus Publications

140

Scholar Citations

7

Scholar h-index

4

Scholar i10-index

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

  • 1 Fundamental Physics of Light Emitting Diodes
    D Muchahary, S Bhattarai, A Sharma, A Kumar
    Organic and Inorganic Light Emitting Diodes: Reliability Issues and 2023

  • Numerical investigation of toxic free perovskite solar cells for achieving high efficiency
    S Bhattarai, R Pandey, J Madan, GS Sahoo, I Hossain, SM Wabaidur, ...
    Materials Today Communications 35, 105893 2023

  • Photovoltaic Performance Investigation of Cs3Bi2I9-Based Perovskite Solar Cells with Various Charge Transport Channels Using DFT and SCAPS-1D Frameworks
    MK Hossain, GF Ishraque Toki, DP Samajdar, MHK Rubel, M Mushtaq, ...
    Energy & Fuels 2023

  • Numerical Analysis in DFT and SCAPS-1D on the Influence of Different Charge Transport Layers of CsPbBr3 Perovskite Solar Cells
    MK Hossain, MKA Mohammed, R Pandey, AA Arnab, MHK Rubel, ...
    Energy & Fuels 37 (8), 6078-6098 2023

  • Performance enhancement by an embedded microlens array in perovskite solar cells
    S Bhattarai, D Gogoi, A Sharma, TD Das
    Indian Journal of Physics, 1-7 2023

  • Performance analysis and optimization of all-inorganic CsPbI3-based perovskite solar cell
    S Bhattarai, I Hossain, M Maiti, R Pandey, J Madan
    Indian Journal of Physics, 1-9 2023

  • Halide Composition Engineered a Non-Toxic Perovskite–Silicon Tandem Solar Cell with 30.7% Conversion Efficiency
    R Pandey, S Bhattarai, K Sharma, J Madan, AK Al-Mousoi, ...
    ACS Applied Electronic Materials 2023

  • A comprehensive study of the optimization and comparison of cesium halide perovskite solar cells using ZnO and Cu 2 FeSnS 4 as charge transport layers
    MK Hossain, GFI Toki, J Madan, R Pandey, H Bencherif, MKA Mohammed, ...
    New Journal of Chemistry 47 (18), 8602-8624 2023

  • A simulation approach for optimization of optical absorption in amorphous silicon solar cell
    M Gogoi, S Bhattarai, TD Das
    Materials Today: Proceedings 73, 604-607 2023

  • Aluminum doped Zinc oxide anode film for performance enhancement of trilayer fluorescence organic light emitting diode
    D Gogoi, S Bhattarai, H Kalita, TD Das
    Materials Today: Proceedings 73, 553-561 2023

  • Performance improvement approach of all inorganic perovskite solar cell with numerical simulation
    S Bhattarai, R Pandey, J Madan, F Ahmed, S Shabnam
    Materials Today Communications 33, 104364 2022

  • Efficiency improvement of organic light-emitting diodes device by attaching microlens arrays and dependencies on the aspect ratio
    A Sharma, S Bhattarai, TD Das
    Indian Journal of Physics 96 (14), 4315-4326 2022

  • A detailed review of perovskite solar cells: Introduction, working principle, modelling, fabrication techniques, future challenges
    S Bhattarai, A Mhamdi, I Hossain, Y Raoui, R Pandey, J Madan, ...
    Micro and Nanostructures, 207450 2022

  • A novel graded approach for improving the efficiency of Lead-Free perovskite solar cells
    S Bhattarai, R Pandey, J Madan, D Muchahary, D Gogoi
    Solar Energy 244, 255-263 2022

  • The Physics of Perovskite Solar Cells: Materials and Characterizations
    DS Bhattarai
    https://notionpress.com/read/the-physics-of-perovskite-solar-cells 1 (Book), 166 2022

  • Heterojunction between crystalline silicon and nanocomposite coupled ZnO SnO2 and optimization of its photovoltaic performance
    D Muchahary, LS Ram, R Narzary, PP Sahu, S Bhattarai, S Tayal
    Current Applied Physics 38, 15-21 2022

  • A Brief on Emerging Materials and Its Photovoltaic Application
    D Muchahary, S Bhattarai, AK Mahato, S Maity
    Emerging Materials: Design, Characterization and Applications, 361-406 2022

  • Investigation of Carrier Transport Materials for Performance Assessment of Lead-Free Perovskite Solar Cells
    S Bhattarai, R Pandey, J Madan, A Mhamdi, A Bouazizi, D Muchahary, ...
    IEEE Transactions on Electron Devices 2022 (0018-9383), 1-8 2022

  • Numerical study of aluminum doped zinc oxide anode based fluorescent bilayer organic light-emitting diode
    D Gogoi, S Bhattarai, TD Das
    Materials Today: Proceedings 67, 280-289 2022

  • Numerical simulation to design an efficient perovskite solar cell through triple-graded approach
    S Bhattarai, A Sharma, PK Swain, TD Das
    Journal of Electronic Materials 50, 6756-6765 2021

MOST CITED SCHOLAR PUBLICATIONS

  • Optimization of carrier transport materials for the performance enhancement of the MAGeI3 based perovskite solar cell
    S Bhattarai, TD Das
    Solar Energy 217, 200-207 2021
    Citations: 29

  • Optimization of the perovskite solar cell design to achieve a highly improved efficiency
    S Bhattarai, TD Das
    Optical Materials 111, 110661 2021
    Citations: 17

  • Efficiency enhancement of perovskite solar cell by using doubly carrier transport layers with a distinct bandgap of MAPbI3 active layer
    S Bhattarai, A Sharma, TD Das
    Optik 224 (2021), 165430 2020
    Citations: 15

  • Halide Composition Engineered a Non-Toxic Perovskite–Silicon Tandem Solar Cell with 30.7% Conversion Efficiency
    R Pandey, S Bhattarai, K Sharma, J Madan, AK Al-Mousoi, ...
    ACS Applied Electronic Materials 2023
    Citations: 13

  • Investigation of Carrier Transport Materials for Performance Assessment of Lead-Free Perovskite Solar Cells
    S Bhattarai, R Pandey, J Madan, A Mhamdi, A Bouazizi, D Muchahary, ...
    IEEE Transactions on Electron Devices 2022 (0018-9383), 1-8 2022
    Citations: 9

  • A novel graded approach for improving the efficiency of Lead-Free perovskite solar cells
    S Bhattarai, R Pandey, J Madan, D Muchahary, D Gogoi
    Solar Energy 244, 255-263 2022
    Citations: 8

  • Numerical simulation study for efficiency enhancement of doubly graded perovskite solar cell
    S Bhattarai, A Sharma, D Muchahary, D Gogoi, TD Das
    Optical Materials 118, 111285 2021
    Citations: 8

  • Factor affecting the performance of perovskite solar cell for distinct MAPI layer thickness
    S Bhattarai, A Sharma, TD Das
    AIP Conference Proceedings 2269 (1), 030071 2020
    Citations: 6

  • Numerical simulation to design an efficient perovskite solar cell through triple-graded approach
    S Bhattarai, A Sharma, PK Swain, TD Das
    Journal of Electronic Materials 50, 6756-6765 2021
    Citations: 5

  • Carrier transport layer free perovskite solar cell for enhancing the efficiency: A simulation study
    S Bhattarai, A Sharma, D Muchahary, M Gogoi, TD Das
    Optik 243, 167492 2021
    Citations: 5

  • Performance improvement approach of all inorganic perovskite solar cell with numerical simulation
    S Bhattarai, R Pandey, J Madan, F Ahmed, S Shabnam
    Materials Today Communications 33, 104364 2022
    Citations: 4

  • Efficiency improvement of organic light-emitting diodes device by attaching microlens arrays and dependencies on the aspect ratio
    A Sharma, S Bhattarai, TD Das
    Indian Journal of Physics 96 (14), 4315-4326 2022
    Citations: 3

  • A detailed review of perovskite solar cells: Introduction, working principle, modelling, fabrication techniques, future challenges
    S Bhattarai, A Mhamdi, I Hossain, Y Raoui, R Pandey, J Madan, ...
    Micro and Nanostructures, 207450 2022
    Citations: 3

  • Fluorescent trilayer OLED device: An electrical and optical characterization-based simulation
    A Sharma, S Bhattarai, TD Das
    AIP Conference Proceedings 2269 (1), 030049 2020
    Citations: 3

  • Numerical investigation of toxic free perovskite solar cells for achieving high efficiency
    S Bhattarai, R Pandey, J Madan, GS Sahoo, I Hossain, SM Wabaidur, ...
    Materials Today Communications 35, 105893 2023
    Citations: 2

  • Numerical Analysis in DFT and SCAPS-1D on the Influence of Different Charge Transport Layers of CsPbBr3 Perovskite Solar Cells
    MK Hossain, MKA Mohammed, R Pandey, AA Arnab, MHK Rubel, ...
    Energy & Fuels 37 (8), 6078-6098 2023
    Citations: 2

  • Performance analysis and optimization of all-inorganic CsPbI3-based perovskite solar cell
    S Bhattarai, I Hossain, M Maiti, R Pandey, J Madan
    Indian Journal of Physics, 1-9 2023
    Citations: 2

  • A comprehensive study of the optimization and comparison of cesium halide perovskite solar cells using ZnO and Cu 2 FeSnS 4 as charge transport layers
    MK Hossain, GFI Toki, J Madan, R Pandey, H Bencherif, MKA Mohammed, ...
    New Journal of Chemistry 47 (18), 8602-8624 2023
    Citations: 2

  • A Brief on Emerging Materials and Its Photovoltaic Application
    D Muchahary, S Bhattarai, AK Mahato, S Maity
    Emerging Materials: Design, Characterization and Applications, 361-406 2022
    Citations: 2

  • Performance enhancement by an embedded microlens array in perovskite solar cells
    S Bhattarai, D Gogoi, A Sharma, TD Das
    Indian Journal of Physics, 1-7 2023
    Citations: 1