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High Impact Factor Journal Publication of IUB Photonic Simulation Laboratory (IUBPSL) of the EEE Department in Collaboration with the University of Kentucky (USA) and Oak Ridge National Laboratory (USA)

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IUB Photonic Simulation Laboratory (IUBPSL), a research group in the Department of Electrical and Electronic Engineering (EEE), School of Science, Engineering and Technology (SETS) have published a journal paper on the 25th of March, 2021, titled “Photoluminescence Enhancement, Blinking Suppression, And Improved Biexciton Quantum Yield of Single Quantum Dots in Zero Mode Waveguides”, in the the “Journal of Physical Chemistry Letters”, a peer-reviewed scientific journal published by the American Chemical Society. According to the SCImago Journal & Country Rank, it is a Q1 journal with an impact factor of 6.71. This year the Journal of Physical Chemistry Letters celebrated its 125th anniversary.
In this project, IUBPSL collaborated with Dr. Chris Richards, Associate Professor in the Department of Chemistry and Director of the Light Microscopy Center, University of Kentucky, USA, and Dr. Charles Collier, Research Scientist (Staff Researcher) of Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Tennessee, USA. The investigation was carried out on the photoluminescence enhancement of a single quantum dot due to the presence of aluminum zero-mode-waveguide. The research teams from IUBPSL provided the computational support modelling light interactions with the zero mode waveguides for the project and UKY was the lead on the experimental side. The paper reported that ∼2.5-fold enhancement in PL intensity resulting from a 2-fold enhancement in excitation intensity due to the increased local electric field, 1.5-fold enhancement in collection efficiency and ∼4.3-fold enhancement in the radiative decay rate, and a 7.0-fold increase in non-radiative decay, which resulted in the slight quenching of the photoluminescence quantum yield were achieved by the researchers. This is a significant academic achievement for the department of Electrical and Electronic Engineering (EEE) of IUB.
The preparation of the article involved meticulous research work and experimentation, making it a considerable undertaking during the ongoing COIVD-19 pandemic. The endeavour was made possible due to the perseverance and dedication of two student members of the research group, S. M. Nayeem Arefin and Fatema Fairooz under the supervision of the director of the IUBPSL and Associate Professor of the EEE department of IUB, Dr. Mustafa Habib Chowdhury, as a continuation of his constant efforts to create world-class student researchers from IUB. This prestigious publication is a testament to the unwavering commitment of the IUBPSL as well as the Department of EEE towards high-quality research and scientific excellence.