Browsing by Author "Sarkar, Joy"

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Open Access
Design and Development of Mixed Perovskite Solar Cells with High Efficiency and Stability through DFT and AI-Based Design Approaches
(University of North Bengal, 2025-03) Chatterjee, Suman; Subba, Subham; Talukdar, Avijit; Debnath, Pratik; Sarkar, Joy
Compared to different solar technologies, Perovskite-based solar cells are preferred by many for their high PCE and cost-effectiveness. Still, building a market-ready solution requires handling various important issues related to stability, how the device is designed, and efficiency. The study presents comprehensive approaches involving Density Functional Theory (DFT), device modeling, and Machine Learning (ML) to improve and evaluate mixed perovskite materials. DFT was utilized to study the electronic structure, energy gap, and defect properties of perovskites. By using SCAPS-1D simulations, different optimization factors were studied. Furthermore, different ML algorithms were trained to find key device properties. The training involved both experiments and simulations to learn from the data and predict how each material would work, allowing for fast screening of various perovskite compositions. Because of this framework, researchers can identify new, efficient materials and learn more about how different compositions affect solar cell performance. This strategy uses DFT modeling, numerical simulation, and data analysis together to improve the speed of developing better perovskite solar cells.
Open Access
Relation between stock market and select marco-electronic variables : A study on pre and post liberalization experiences in India
(University of North Bengal, 2022) Sarkar, Joy; Ray, Hirak; Dhar, Samirendra Nath
Open Access
The Impact of Carbon Price on Stock Market Returns: An Indian Experience
(University of North Bengal, 2021) Sarkar, Joy; Das, Raj
The rapid industrialisation is unquestionably considered as a key to achieve higher economic growth and development in modern civilization today. But, this in turn leads to higher carbon emissions and other GHGs. Ever since the Industrial Revolution; human – induced anthropogenic activities have resulted in huge emission of the GHGs due to which global warming has become a serious concern. Undoubtedly, higher industrial outputs add to the country’s growth but captivating profits at the cost of nature should not be continued. However, in 1997, with the emergence of the Kyoto Protocol, both developed and developing economies started to treat this matter seriously. Under this protocol the carbon credit system was established that imposed quotas on countries having more carbon emissions. Ever since then, the developing countries with less carbon emission generated carbon credits. This carbon credit can be traded actively in the international market at a certain market price to those developed economies with more carbon emission above the cap limit. This led to a rise in the carbon market to boost both the sustainable and environmental friendly practices among entities. Corporations that can reduce emission generate carbon credit, the right of which can be sold to entities that are emitting more CO2 and GHGs. Does this in any way affect corporate valuation and share price? This paper attempts to study the relationship between Carbon emission price and Indian stock market performance for a period covering FY 2008 to FY 2010. The research used simple regression analysis to test the relationship between dependent variables (BSE GREEENEX, BSE INDUSTRIALS, PCBL Ltd., Rain Industries and Reliance Industries) and independent variables (Carbon emission prices). This research is purely based on secondary data collected from websites, journals and other sources. This paper also tries to highlight the trends in the carbon market in India during the period of study.