Search Results - "Jariwala, Sarthak"

Tracking Photoexcited Carriers in Hybrid Perovskite Semiconductors: Trap-Dominated Spatial Heterogeneity and Diffusion by deQuilettes, Dane W, Jariwala, Sarthak, Burke, Sven, Ziffer, Mark E, Wang, Jacob T.-W, Snaith, Henry J, Ginger, David S

“…We use correlated confocal and wide-field fluorescence microscopy to probe the interplay between local variations in charge carrier recombination and charge…”
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The Role of Excitation Energy in Photobrightening and Photodegradation of Halide Perovskite Thin Films by Quitsch, Wolf-Alexander, deQuilettes, Dane W, Pfingsten, Oliver, Schmitz, Alexander, Ognjanovic, Stevan, Jariwala, Sarthak, Koch, Susanne, Winterer, Markus, Ginger, David S, Bacher, Gerd

“…We study the impact of excitation energy on the photostability of methylammonium lead triiodide (CH3NH3PbI3 or MAPI) perovskite thin films. Light soaking leads…”
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Time-Resolved Electrical Scanning Probe Microscopy of Layered Perovskites Reveals Spatial Variations in Photoinduced Ionic and Electronic Carrier Motion by Giridharagopal, Rajiv, Precht, Jake T, Jariwala, Sarthak, Collins, Liam, Jesse, Stephen, Kalinin, Sergei V, Ginger, David S

“…We study light-induced dynamics in thin films comprising Ruddlesden–Popper phases of the layered 2D perovskite (C4H9NH3)2PbI4. We probe ionic and electronic…”
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Polymer-modified halide perovskite films for efficient and stable planar heterojunction solar cells by Zuo, Lijian, Guo, Hexia, deQuilettes, Dane W, Jariwala, Sarthak, De Marco, Nicholas, Dong, Shiqi, DeBlock, Ryan, Ginger, David S, Dunn, Bruce, Wang, Mingkui, Yang, Yang

“…The solution processing of polycrystalline perovskite films introduces trap states that can adversely affect their optoelectronic properties. Motivated by the…”
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Reducing Surface Recombination Velocity of Methylammonium-Free Mixed-Cation Mixed-Halide Perovskites via Surface Passivation by Jariwala, Sarthak, Burke, Sven, Dunfield, Sean, Shallcross, R. Clayton, Taddei, Margherita, Wang, Jian, Eperon, Giles E, Armstrong, Neal R, Berry, Joseph J, Ginger, David S

“…We control surface recombination in the mixed-cation, mixed-halide perovskite, FA0.83Cs0.17Pb­(I0.85Br0.15)3, by passivating nonradiative defects with the…”
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Reducing Surface Recombination Velocities at the Electrical Contacts Will Improve Perovskite Photovoltaics by Wang, Jian, Fu, Weifei, Jariwala, Sarthak, Sinha, Irika, Jen, Alex K.-Y, Ginger, David S

“…We explore the effects of nonradiative recombination at the extracting contacts on the achievable performance of halide perovskite photovoltaic cells. First,…”
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Interpreting Halide Perovskite Semiconductor Photoluminescence Kinetics by Taddei, Margherita, Jariwala, Sarthak, Westbrook, Robert J. E., Gallagher, Shaun, Weaver, Aaron C., Pothoof, Justin, Ziffer, Mark E., Snaith, Henry J., Ginger, David S.

“…Drawing from both experimental data and simulation, we highlight best practices for fitting time-resolved photoluminescence (TRPL) decays of halide perovskite…”
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Dimethylammonium Addition to Halide Perovskite Precursor Increases Vertical and Lateral Heterogeneity by Jariwala, Sarthak, Kumar, Rishi E, Eperon, Giles E, Shi, Yangwei, Fenning, David P, Ginger, David S

“…Adding a large A-site cation, such as dimethylammonium (DMA), to the perovskite growth solution has been shown to improve the performance and long-term…”
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Structure-Property Relationships in Organic-Inorganic Halide Perovskite Solar Cells by Jariwala, Sarthak Piyushkumar

“…Over the past 100 years, there has been a complete disregard for the environmental impact of unregulated burning of fossil fuels. This has led to an increase…”
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Dimethylammonium Addition to Halide Perovskite Precursor Increases Vertical and Lateral Heterogeneity by Jariwala, Sarthak, Kumar, Rishi E., Eperon, Giles E., Shi, Yangwei, Fenning, David P., Ginger, David S.

“…Adding a large A-site cation, such as dimethylammonium (DMA), to the perovskite growth solution has been shown to improve the performance and long-term…”
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Dimethylammonium Addition to Halide Perovskite Precursor Increases Vertical and Lateral Heterogeneity by Jariwala, Sarthak, Kumar, Rishi E., Eperon, Giles E., Shi, Yangwei, Fenning, David P., Ginger, David S.

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Controlling Spatial Crystallization Uniformity and Phase Orientation of Quasi‐2D Perovskite‐Based Light‐Emitting Diodes Using Lewis Bases by Han, Yaeeun, Park, Sungbin, Wang, Jian, Jariwala, Sarthak, Lee, Kangmin, Bischak, Connor G., Kim, Sohyeon, Hong, Jungyun, Kim, Sunwoo, Lee, Mi Jung, Ginger, David S., Hwang, Inchan

“…Crystallographic orientation has a significant impact on the optoelectronic properties of films of quasi‐2D perovskite quantum wells. Here, oxygen‐bearing…”
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Quasi‐2D Perovskites: Controlling Spatial Crystallization Uniformity and Phase Orientation of Quasi‐2D Perovskite‐Based Light‐Emitting Diodes Using Lewis Bases (Adv. Mater. Interfaces 2/2020) by Han, Yaeeun, Park, Sungbin, Wang, Jian, Jariwala, Sarthak, Lee, Kangmin, Bischak, Connor G., Kim, Sohyeon, Hong, Jungyun, Kim, Sunwoo, Lee, Mi Jung, Ginger, David S., Hwang, Inchan

“…The stability of intermediate complexes formed by the addition of Lewis bases is a key factor in modulating orientation of quasi‐2D perovskites as well as…”
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Dimethylammonium additives alter both vertical and lateral composition in halide perovskite semiconductors by Jariwala, Sarthak, Kumar, Rishi, Eperon, Giles E, Shi, Yangwei, Fenning, David, Ginger, David S

“…Adding a large A-site cation, such as dimethylammonium (DMA), to the perovskite growth solution has been shown to improve performance and long-term operational…”
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Approaching the limits of optoelectronic performance in mixed cation mixed halide perovskites by controlling surface recombination by Jariwala, Sarthak, Burke, Sven, Dunfield, Sean, Shallcross, Clayton, Taddei, Margherita, Wang, Jian, Eperon, Giles E, Armstrong, Neal R, Berry, Joseph J, Ginger, David S

“…We demonstrate the critical role of surface recombination in mixed-cation, mixed-halide perovskite, FA0.83Cs0.17Pb(I0.85Br0.15)3. By passivating non-radiative…”
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Local Crystal Misorientation Influences Non-Radiative Recombination by Jariwala, Sarthak, Sun, Hongyu, Adhyaksa, Gede W. P, Lof, Andries, Muscarella, Loreta A, Ehrler, Bruno, Garnett, Erik C, Ginger, David S

“…We use ultrasensitive electron backscatter diffraction (EBSD) to map the local crystal orientations, grains, and grain boundaries in CH3NH3PbI3 (MAPI)…”
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