@article {48701,
	title = {Multi-bandgap quantum dots ensemble for near-infrared photovoltaics},
	journal = {Energy Technology},
	volume = {11},
	year = {2023},
	month = {JUN},
	type = {Article},
	abstract = {<p>
	Narrow bandgap quantum dots (QDs) are an important class of materials for near-infrared (NIR) optoelectronic devices owing to their size-tunable bandgap and chemical root processing. In photovoltaic applications, NIR QDs could be particularly useful to complement the sub-bandgap transmission loss of NIR solar radiation from perovskite and c-Si solar cells. However, insufficient carrier extraction thickness associated with the narrow NIR excitonic bandwidth of QDs limits the conversion efficacy of the broad NIR solar spectrum. Here, we utilize a multi-bandgap QD ensemble which widens the NIR absorption bandwidth to mimic the broad solar spectrum. A solution-phase ligand passivation strategy is used to control doping properties and energy level alignment of multi-bandgap QDs. We successfully developed bulk-heterojunction solar cells using the multi-bandgap QD ensemble, which yields higher carrier extraction thickness and broader NIR absorption. The gain from NIR absorption and carrier transport resulted in higher short-circuit current generation and power conversion efficiency (PCE) in solar cell devices. The champion device shows 8.73\% PCE under 1.5 AM solar illumination and 7.44\% and 5.05\% PCE for the NIR photons transmitted from perovskite and c-Si layers.</p>
},
	keywords = {bulk-heterojunctions, multi-bandgap, near-infrared, quantum dots, solar cells, surface passivation},
	issn = {2194-4288},
	doi = {10.1002/ente.202201375},
	author = {Mahajan, Chandan and Dambhare, Neha V. and Biswas, Arindam and Sharma, Anjali and Shinde, Dipak Dattatray and Rath, Arup K.}
}
@article {49336,
	title = {Magnetic chemiresistive Fe-doped In2O3 nanocubes to Tunably detect NO2 at ppm to ppb concentrations},
	journal = {ACS APPLIED NANO MATERIALS},
	volume = {7},
	year = {2024},
	month = {JUN },
	pages = {14331-14343},
	type = {Journal Article},
	keywords = {GAS-SENSING PROPERTIES, METAL-OXIDE  NANOSTRUCTURES},
	doi = {10.1021/acsanm.4c01795},
	author = {Rudra, Pratyasha and Dambhare, Neha V. and Srihari, Velaga and Das, Sagnik and Rath, Arup Kumar and Saha, Debdulal and Mondal, Swastik}
}
