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Search Publications by: Ganga R. Neupane (Assoc)

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Displaying 1 - 6 of 6

Controlling Phase Transition Dynamics in Laser-Printed Perovskite Films via Additive-Driven Strain Engineering

April 10, 2026
Author(s)
Hurriyet Yuce Cakir, Manikanta Makala, Ganga Neupane, Marielle Deconinck, Vladimir Shilovskikh, Xinyi Zhou, Rudolph Holley III, Quinn Burlingame, Yana Vaynzof, Yueh-Lin Loo, Behrang Hamadani, Oana Jurchescu
The structural phase transitions in hybrid perovskites are critical to their performance and stability, but controlling them remains a significant challenge. Here, we demonstrate that the dynamics of the low-temperature tetragonal-to-orthorhombic phase

Insights into transient photovoltage lifetimes via dark J-V analysis in perovskite solar cells

September 23, 2024
Author(s)
Ganga Neupane, John Roller, Susanna Thon, Sheng Fu, Zhaoning Song, Yanfa Yan, Behrang Hamadani
Transient photovoltage (TPV) decay measurements have commonly been used to estimate the charge carrier lifetimes in solar cell devices. However, it has recently been demonstrated that an intrinsic material property such as the effective bulk carrier

Intra-grain local luminescence properties of CdSe0.1Te0.9 Thin Films

December 25, 2023
Author(s)
Ganga Neupane, Behrang Hamadani, David Albin, Joel Duenow, Matthew Reese, Susanna Thon
We report on the local photoluminescence properties of grains and grain boundaries of CdSe0.1Te0.9 thin film deposited by the colossal grain growth method using a wide-field hyperspectral imaging technique. We observed significant variations in the

Imaging local luminescence variations in CdSe0.1Te0.9 thin films grown by the colossal grain growth process.

August 4, 2023
Author(s)
Ganga Neupane, Andrew Winchester, Nicolas Marquez Peraca, David Albin, Joel Duenow, Matthew Reese, Sujitra Pookpanratana, Susanna Thon, Behrang Hamadani
Clear visualization and understanding of luminescence properties of grain interiors and grain boundaries in polycrystalline thin-film photovoltaic materials are crucial to achieving high-performance solar cells. Luminescence-based measurements, for example
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