Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session R60: Condensed Matter/Materials Science Solutions to Environmental ProblemsInvited
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Sponsoring Units: FIP Chair: Abhishek Kumar, NIST Room: BCEC 258A |
Thursday, March 7, 2019 8:00AM - 8:36AM |
R60.00001: Perovskites for Energy Harvesting Invited Speaker: Marina Leite The extraordinary performance of perovskite solar cells (> 20%) is still hampered by their dynamic optical and electrical responses, which often lead to degradation. The individual and combined effects of water, oxygen, temperature, bias, and light must be controlled for their future commercialization. To unravel the contribution of each parameter on materials’ properties and devices’ performance, we combine advanced scanning probe methods. We investigate a series of hybrid perovskites, including MAPbI3, MAPbBr3, CsxFA1−xPb(IyBr1−y)3 , and triple cation Cs-mixed. Using environmental PL microscopy we elucidate a humidity-induced PL hysteresis, strongly dependent on the Cs/Br ratio. Through Kelvin-probe force microscopy we elucidate the dynamic open-circuit voltage response as a function of chemical composition and illumination treatments. We propose a machine learning (ML) paradigm to identify the influence of each aforementioned parameter on perovskite’s stability and device performance. Our functional microscopy platform, combined with ML, can be leveraged to assess Pb-free perovskites. |
Thursday, March 7, 2019 8:36AM - 9:12AM |
R60.00002: John Wheatley Award Talk: Multifunctional Materials for Emerging Technologies Invited Speaker: Federico Rosei As the age of fossil fuels is coming to an end, now more than ever there is the need for more efficient and sustainable renewable energy technologies. This presentation will give an overview on recent developments in solar technologies that aim to address the energy challenge. In particular, nanostructured materials synthesized via the bottom–up approach present an opportunity for future generation low cost manufacturing of devices. We demonstrate various multifunctional materials, namely materials that exhibit more than one functionality, and structure/property relationships in such systems, including new strategies for the synthesis of multifunctional nanoscale materials to be used for applications in photovoltaics, solar hydrogen production, luminescent solar concentrators and other emerging optoelectronic technologies. [1-22]. |
Thursday, March 7, 2019 9:12AM - 9:48AM |
R60.00003: Nanomanufacturing: An enabler for environmental technologies Invited Speaker: James Liddle From clean water to clean energy, many environmental technologies rely upon nanoscale phenomena, and consequently on our ability to control and manipulate material structure, composition, and function at that scale. While we have achieved unprecedented control over matter using the tools of integrated circuit manufacturing, the volumes and price points required to meet the demands of environmental technologies mean that the semiconductor manufacturing toolset cannot be used. I will describe the economic landscape relevant to nanomanufacturing in the context of environmental technologies and a selection of those nanostructuring methods that may meet the boundary conditions of scale and cost. |
Thursday, March 7, 2019 9:48AM - 10:24AM |
R60.00004: Advances in molecular and polymeric photovoltaic devices and the challenges to their commercialization Invited Speaker: Jayant Kumar TBD |
Thursday, March 7, 2019 10:24AM - 11:00AM |
R60.00005: Electrospun Nanofibers Enhance the Flux and Fouling Resistance of Ultrafiltration Membranes Invited Speaker: Jessica Schiffman The reliability and ease of operation of membrane-based water purification systems has led to their |
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