Ms. Neelu Sharma Profile

Neelu Sharma

at Indian Institute of Technology Bombay

SPIE Involvement:

Author

Publications (10)

Proceedings Article | 11 March 2024 Poster + Paper

Performance analysis of lead free organic-inorganic hybrid double perovskites MA2NaBiCl6 based fabricated solar cell device

Neelu Neelu, Nivedita Pandey, Amitabha Nath, Subhananda Chakrabarti

Proceedings Volume 12883, 1288309 (2024) https://doi.org/10.1117/12.3013286

KEYWORDS: Perovskite, Solar cells, Lead, External quantum efficiency, Sustainability, Photovoltaics, Tolerancing, Quantum devices, Materials properties, Quantum data

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Proceedings Article | 30 November 2023 Poster + Paper

Synthesis and characterization study of a novel lead-free hybrid organic-inorganic halide double perovskite (MA)2NaBiCl6 for photonics applications

Neelu Sharma, Nivedita Pandey, Subhananda Chakrabarti

Proceedings Volume 12796, 127960H (2023) https://doi.org/10.1117/12.3004210

KEYWORDS: Perovskite, Lead, Photonics, Spectroscopy, Semiconductors, Scanning electron microscopy, FT-IR spectroscopy, X-ray diffraction, UV-Vis spectroscopy, Transmittance

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Proceedings Article | 30 November 2023 Poster + Paper

Investigation of self-powered photoresponse performance of all inorganic lead-free halide perovskites (CsSnCl3) nanocrystals (NCs) decorated Er:ZnO nanowires/Si heterojunctions

Ajay Kumar, Rajib Saha, Avijit Dalal, Aniruddha Mondal, Neelu Sharma, Subhananda Chakrabarti

Proceedings Volume 12796, 127960G (2023) https://doi.org/10.1117/12.3004180

KEYWORDS: Nanowires, Heterojunctions, Perovskite, Zinc oxide, Silicon, Erbium, Transmission electron microscopy, Photodetectors, Nanocrystals, Light absorption

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In the current study, we report the all-inorganic lead-free halide perovskites-oxide heterojunction based optoelectronic device fabrications on Si substrate by employing cost-effective chemical bath deposition (CBD) and hot-injection techniques. The selective rare-earth doping of erbium (Er) in ZnO nanowires is performed by employing double-step CBD technique on Si platform for developing a superior heterojunction between Er:ZnO and Si. Furthermore, lead-free perovskites NCs of CsSnCl3 are synthesized by using cost-effective hot-injection method and such NCs are decorated over the Er:ZnO nanowires to passivate the surface defect states. The effect of Er-doping and CsSnCl3 incorporation on structural, optical and luminescence properties of nanowire heterojunctions has been successfully investigated by employing XRD, UV-VIS and PL. The crystal structure of Er:ZnO and Er: ZnO-CsSnCl₃ heterojunctions has been analyzed using X-Ray Diffraction (XRD) technique, which confirms the polycrystalline nature of nanowires with the formation of a highly crystalline cubic phase of CsSnCl₃. The optical absorption of Er:ZnO nanowires and CsSnCl₃ NCs are studied by using ultraviolet-visible (UV-VIS) spectroscopy and corresponding energy bandgaps are estimated to be 3.31 eV and 3.24 eV, respectively. The oxygen vacancies and complex defect states are minimized in ZnO nanowires by Er-doping and perovskites NCs addition and such CsSnCl3 decorated Er:ZnO nanowires exhibit enhanced UV luminescence as compared to undoped ZnO. Finally, photoresponse of undoped, Er-doped and CsSnCl₃ incorporated ZnO nanowires/Si heterojunction has been studied by measuring dark and photo-current and photo-current switching at UV-A wavelength region and such heterojunctions shows excellent photoresponse under self-powered mode. Therefore, such perovskites incorporated Er:ZnO nanowires/Si heterojunction can be a potential candidate for fabricating a highly responsive self-powered UV-detector (UV-A).

Proceedings Article | 5 October 2023 Poster + Paper

Investigation of electronic and optical behavior of Ag-based novel double perovskite MA2AgBiCl6 for photovoltaic applications

Neelu Neelu, Nivedita Pandey, Subhananda Chakrabarti

Proceedings Volume 12651, 126510D (2023) https://doi.org/10.1117/12.2677992

KEYWORDS: Perovskite, Scanning electron microscopy, Photovoltaics, FT-IR spectroscopy, Solar cells, Crystals, Materials properties, Photoluminescence, Nanoparticles, Lead

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Proceedings Article | 1 October 2023 Poster + Paper

Impact of Bi doping on the structural and optical properties of the lead-free double perovskites (Cs2SnCl6:Bi3+) for optoelectronic applications

Ajay Kumar, Neelu Sharma, Rajib Saha, Samishta Choudhary, Subhananda Chakrabarti

Proceedings Volume 12659, 1265907 (2023) https://doi.org/10.1117/12.2677960

KEYWORDS: Perovskite, Bismuth, Doping, Luminescence, Tin, Optical properties, Optoelectronics, UV-Vis spectroscopy, Magnesium, Crystals

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Proceedings Article | 10 March 2023 Poster + Paper

Room temperature synthesis and experimental study of novel double perovskite MA2KBiCl6 for photovoltaic application

Neelu Sharma, Nivedita Pandey, Subhananda Chakrabarti

Proceedings Volume 12416, 124160A (2023) https://doi.org/10.1117/12.2648259

KEYWORDS: Perovskite, FT-IR spectroscopy, Lead, Photovoltaics, Nanoparticles, Crystals, Absorption, Bismuth, Absorption spectrum, Scanning electron microscopy

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Proceedings Article | 10 March 2023 Poster + Paper

Room temperature synthesis and experimental study of novel double perovskite MA2KBiCl6 for photovoltaic application

Neelu Sharma, Nivedita Pandey, Subhananda Chakrabarti

Proceedings Volume 12416, 124160A (2023) https://doi.org/10.1117/12.2648259

KEYWORDS: Perovskite, FT-IR spectroscopy, Lead, Photovoltaics, Nanoparticles, Crystals, Absorption, Bismuth, Absorption spectrum, Scanning electron microscopy

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Proceedings Article | 3 October 2022 Poster + Presentation + Paper

A comparative study of Dots-in-a-Double-Well (DDWELL) heterostructures with SK, SML and coupled SK-on-SML as active region

Archishman Saha, Neelu Neelu, Ravindra Kumar, Saranya Reddy Shriram, Subhananda Chakrabarti

Proceedings Volume 12200, 122000C (2022) https://doi.org/10.1117/12.2633251

KEYWORDS: Heterojunctions, Absorption, Quantum dots, Luminescence, Indium arsenide, Sensors, Optoelectronic devices, Crystals, Security technologies, Quantum wells

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