Sagar Bhattarai

Verified email at gmail.com

Assistant Professor and HoD, Department of Physics
Arunachal University of Studies



                             

https://researchid.co/sagarbhattarai012

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
18

Scopus Publications

59

Scholar Citations

4

Scholar h-index

2

Scholar i10-index

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

  • A simulation approach for optimization of optical absorption in amorphous silicon solar cell
    M Gogoi, S Bhattarai, TD Das
    Materials Today: Proceedings 2022

  • 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

  • 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 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

  • 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, 1-12 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

  • A Brief on Emerging Materials and Its Photovoltaic Application
    D Muchahary, S Bhattarai, AK Mahato, S Maity
    Emerging Materials, 361-406 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 (12), 6756-6765 2021

  • 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

  • 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

  • Theoretical Approach to Study the Physical Properties of GaAsSb Alloy
    A Sharma, G Gupta, S Bhattarai, TD Das
    2021

  • 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

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

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

  • 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

  • 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

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: 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: 10

  • Optimization of the perovskite solar cell design to achieve a highly improved efficiency
    S Bhattarai, TD Das
    Optical Materials 111, 110661 2021
    Citations: 9

  • 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: 4

  • 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: 4

  • 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: 3

  • 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: 2

  • 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: 2

  • 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: 2

  • 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 (12), 6756-6765 2021
    Citations: 2

  • 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: 2

  • 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
    Citations: 1

  • A Brief on Emerging Materials and Its Photovoltaic Application
    D Muchahary, S Bhattarai, AK Mahato, S Maity
    Emerging Materials, 361-406 2022
    Citations: 1