HOME > Profile > ISLAM, Ashraful
- Address
- 305-0047 1-2-1 Sengen Tsukuba Ibaraki JAPAN [Access]
Research
- Keywords
Organic/inorganic interface, Photochemistry and Photovoltaics
PublicationsNIMS affiliated publications since 2004.
Research papers
- Md. Abdul Karim, Vishnuvardhan Reddy Chappidi, Md. Emrul Kayesh, Sai Santosh Kumar Raavi, Ashraful Islam. Crosslinker additive integration: A strategy to boost performance and stability in FASnI3 perovskite solar cells. Solar Energy. 278 (2024) 112761 10.1016/j.solener.2024.112761
- ISLAM, Ashraful, Towhid H. Chowdhury, Md Akhtaruzzaman, QIN, Chuanjiang, HAN, Liyuan, Jae-Joon Lee, Idriss M. Bedja, Kamaruzzaman Sopian, Antoine Mirloup, Nicolas Leclerc. . SUSTAINABLE ENERGY & FUELS. [1] () 209-214
- Vishnuvardhan Reddy Chappidi, Sudhanshu Kumar Nayak, Md. Emrul Kayesh, Md. Abdul Karim, Yulu He, Ashraful Islam, Sai Santosh Kumar Raavi. Elucidating the improved properties of defect engineered lanthanum-doped nickel oxide as hole-transport layer in triple-cation perovskite solar cells. Solar Energy. 281 (2024) 112888 10.1016/j.solener.2024.112888
Proceedings
- Liyuan Han, Ashraful Islam. Highly Efficient Dye-sensitized Solar Cells. MRS Proceedings 2011. (2011) g07-05 10.1557/opl.2011.1121
Presentations
- FERDOUS, Jannatul, JEVASUWAN, Wipakorn, KAYESH Md Emrul, ISLAM, Ashraful, FUKATA, Naoki. Tin oxide nanoparticle as hole transporting layer for highly stable Sn-based perovskite solar cells. The 35th International Photovoltaic Science and Engineering Conference (PVSEC-35). 2024
- ISLAM, Ashraful, WU, Yongzhen, カエシ モハメド エンムル, チョウドリ トゥフヒドゥ フサイン. Coadditive and compositional engineering for high performance perovskite solar cells. BCSIR Congress-2022. 2022 Invited
- イスラム アシュラフル, Md. Emrul Kayesh, チョウドリ トゥフヒドゥ フサイン. Co-additive engineering for efficient and stable toxic Pb free Sn-perovskite solar cells. ICSTB-2021/http://icstb2021bcsir.com/ International Conference on Science and Technology for Celebrating the Birth Centenary of Bangabandhu. 2021 Invited
Published patent applications
Research Center for Energy and Environmental Materials (GREEN)
Organic-inorganic hybrid solar cells
Solar cell, Perovskite, Dye-sensitized, Interface, Stability, High efficiency
Overview
Photovoltaic (PV) systems-have very little impact on the environment, making them one of the cleanest power-generating technologies available. Organic-inorganic hybrid perovskite solar cells has high potential as a next generation PV due to its rapid increase in the power-conversion efficiency. Improvement in durability and efficiency through the development of intelligent materials and new device structure are the current issues facing these solar cells. The key concerns are the development of an environmentally friendly lead-free perovskite layer and new charge carrying materials (ETM and HTM).
Novelty and originality
• Materials engineering strategies to synthesize and fabricate stable perovskites.
• Size controlled growth of perovskite crystals and reactive surface engineering
• Development of inverted perovskite architecture with high stability
• Development of Pb free Sn-PSCs with new levels of efficiency and operational stability
• Development of low band gap stable Sn-Pb based PSC for tandem solar cell.
Details
We have successfully fabricated highly stable Pb-PSCs, toxic Pb free Sn-PSCs and low band gap Sn-Pb-PSCs through materials engineering strategies, reactive perovskite surface and unique device architectural engineering. The rapid crystallization process of tin halide perovskite compounds results in severe electronic defects which limits the open circuit voltage. We implement bifunctional and electron withdrawing additives with FASnI3 to reduce the electronic defects and enhance electron transportation.
Summary
The efficiency and operational stability of PSCs are heavily influenced by the inherent features of perovskite films, such as trap densities, defects forming at grain boundaries and interfaces, and bandgap mismatching. To facilitate the development of highly efficient and stable perovskite solar cells and their upscaling for practical applications we focused on the strategies through innovative ideas on materials compositional engineering, and defect passivation using novel additive and interfacial engineering.
