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Selected Publications


13.    Barman,Debasish.; Annadhasan,M.; Bidkar,A.; Rajamalli,P.; Barman,D.; Chandrasekar,R.; Ghosh, S.S.; Iyer, P. K.* Highly Efficient Color-Tunable Organic Co-crystals Unveiling Polymorphism, Isomerism, Delayed Fluorescence for Optical Waveguides and Cell-imaging Nature Communications (2023), 14, 6648.( https://www.nature.com/articles/s41467-023-42017-8 )


12.    Barman, Debasish; Annadhasan, M.; Chandrasekar, R.*; Iyer, P. K.* Hot-Excitons Harvesting via Through-Space Single-Molecule Based White-Light Emission and Optical Waveguides. Chem. Sci. (2022), xx, xx.( https://doi.org/10.1039/D2SC02172B )


11.    Garai, R.; Gupta, R.K.;Hossain, M.; Iyer, P. K.* Surface recrystallized stable 2D-3D graded perovskite solar cells for efficiency beyond 21%J. Mater. Chem. A, (2021), 9, 26069-26076.( https://doi.org/10.1039/D1TA06901B )


10.    Hossain, M.; Garai, R.; Gupta, R.K.; Arunagirinathan, R.A.; Iyer, P. K.* Fluoroarene Derivative based Passivation of Perovskite Solar Cell Exhibiting Excellent Ambient and Thermo-Stability Achieving Efficiency >20%†.J. Mater. Chem. C, (2021), 09 10406-10413(https://doi.org/10.1039/D1TC02335G )


9.    Garai, R.; Gupta, R.K.; Tanwar, A.S.; Hossain, M.; Iyer, P. K.* Conjugated Polyelectrolyte-Passivated Stable Perovskite Solar Cells for Efficiency Beyond 20%. Chem. Mater., (2021), 33 5709-5717. (https://doi.org/10.1021/acs.chemmater.1c01436 )


8.    Choudhury, A.; Gupta, R.K.; Garai, R.; Iyer, P. K.* Tailoring Trap Density of States through Impedance Analysis for Flexible Organic Field-Effect Transistors. Adv. Mater. Interfaces, (2021), xx xx.(https://doi.org/10.1002/admi.202100574 )


7.    Barman, Debasish; Gopikrishna, P.; Iyer, P. K.* Stimuli-Responsive Trimorphs and Charge-Transfer Complexes of a Twisted Molecular Donor. Langmuir, (2021), xx xx.(https://doi.org/10.1021/acs.langmuir.1c01172 )


6.    Gupta, R.K.; Garai, R.; Hossain, M.; Afroz, M. A.; Kalita, D.; Iyer, P. K.* Engineering Polymer Solar Cells: Advancement in Active Layer Thickness and Morphology. J. Mater. Chem. C, (2021), 9, 8746-8775.(https://doi.org/10.1039/D1TC01860D )


5.    Gupta, R.K.; Garai, R.; Hossain, M.; Choudhury, A; Iyer, P. K.* Halide Engineering for Mitigating Ion Migration and Defect States in Hot-Cast Perovskite Solar Cells. ACS Sustainable Chem. Eng., (2021), 9, 7993–8001.(https://doi.org/10.1039/D1TC01860D )


4.    Das, S.; Choudhury, A.; Mandal, A.; Kumar, C.; Sahoo, S. R.; Bedi, A.; Karmakar, H. S.; Ghosh, N. G.; Dey, S.; Iyer, P. K.*; Bhattacharyya, S.; Zade, S. S.*; An unconventional route to an ambipolar azaheterocycle and its in situ generated radical anion. Org. Biomol. Chem. , (2021), 19, 5114-5120.


3.    Singh, N.; Malik, A.H,; Iyer, P. K.*; Patra,S.* Diversifying the xanthine scaffold for potential phosphodiesterase 9A inhibitors: synthesis and validation. Med. Chem. Res. , (2021), 30, 1199–1219.


2.    Dey, A.; Singh, A.; Dutta, D.; Ghosh, S. S.*; Iyer, P. K.* Rapid and Label-Free Bacteria Detection using Hybrid Tri-layer Dielectrics Integrated n-Type Organic Field Effect Transistor. J. Mater. Chem. A,, (2019), 7, 18330-18337. (https://doi.org/10.1039/C9TA06359E )


1.    Meher, N. ; Iyer, P. K.* Spontaneously Self-Assembled Naphthalimide Nanosheets: Aggregation Induced Emission and Unveiling a-PET for Sensitive Detection of Organic Volatile Contaminants in Water. Angew.Chem. Int. Ed., (2018), 57, 8488 –8492. (https://doi.org/10.1002/anie.201802842 )

Quick Links

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Congratulations to Dr. Debasish Barman on your recent remarkable publication in Nature Communications!

Congratulations to Mr. Ramkrishna Das Adhikari for being awarded the prestigious Prime Minister's Research Fellowship (PMRF)-2022.

Congratulations to Ms. Nehal Zehra, Ms. Paromita Bhattcharjee and Mr Debashish Barman, for for successfully defending their Ph.D viva-voce.

Prof. Iyer has taken charge as a Officiating Director of IIT Guwahati.

Many congratulations to Dr. Rabindranath Garai for being awarded the prestigious 2023-2024 Fulbright-Nehru Postdoctoral Research Fellowship.

Prof. Iyer joined as Associate Editor in ACS Applied Biomaterials from 1st January,2023.

Ms. Kavita Narang and Mr. Rajdikshit Gogoi to do a part of their research work in Prof. Krishna Lab at University of Iceland under ERASMUS fellowship.

Congratulations to Mr Laxmi Adil Raman and Ms. Anwesha Choudhury for for successfully defending their Ph.D viva-voce.

IIT-Guwahati group led by Professsor Iyer devises a 2D-3D perovskite capable of enhanced charge transport. This work is highlighted in (The Hindu Businessline)

Professsor Iyer and his research team comprsing Mr. Ritesh Kant Gupta, Mr. Rabindranath Garai, Mr. Maimur Hossain and Mr. Arvin Sain Tanwar develpoed cost-effective, highly efficient perovskite solar cells to produce electricity from sunlight. This work is highlighted in (Economic times), (NE India Broadcast), (NDTV Education), (The statesman), (Ahmedabad Mirror), (Free press journal),

Congratulations to Mr. Priyam Ghosh and Mr. Soumalya Bhowmik for being awarded the prestigious Prime Minister's Research Fellowship (PMRF)-2020.

Thanks to Prof. Parameswar K. Iyer, Prof. Siddhartha S. Ghosh and teams for their immense contribution in the fight against COVID-19 pandemic by developing high quality and affordable sterile SPILD VTM Kit, RT-PCR Kits and RNA isolation kits.

Congrats to Anamika Dey and the whole team for tremendous work on developing low-cost hand-held device to detect bacteria. This work is highlighted in (India Today), (Nature Asia Article), (The Times of India)

Motivated students may contact for JRF and NPDF positions.


Prof. Parameswar K. Iyer

Department of Chemistry &

Centre for Nanotechnology

Indian Institute of Technology Guwahati

Guwahati-781039, Assam. India

Tel: +91-361-258-2314 (O)

Fax: +91-361-269-0762 / 258-2349

E-mail: pki@iitg.ac.in