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SUMMARY:Enabling a renewable future with terawatts of solar and the role o
 f next-generation solar energy materials – perovskites for the future?
DTSTART:20171212T163000
DTEND:20171212T173000
DTSTAMP:20260930T195019Z
UID:d588c403d5f08f80475d7e05c3b1c7e106aa36c0323c38f7bbf5c411
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Jao van de Lagemaat\n\nUniversity of Colorado Boulder\n
 USA\nDeeply transforming the energy system by increased use of solar and o
 ther renewable technologies while becoming both sustainable and reliable i
 s a major challenge that surpasses simple drivers such as cost and other i
 ncentives. The solar energy market has been growing at astonishing year-to
 -year rates of over 20% per year surpassing all previous estimates but is 
 still only a minor component of the total energy use of the world. Further
 more\, it is unclear whether further growth can be sustained by current te
 chnologies owing to large capital expenditures (CapEx) needed for new plan
 ts leading to a possibility of production peaking before we reach signific
 ant solar production. To enable a terawatt revolution\, not just tradition
 al technologies are needed in much larger amounts than current production 
 levels but also a mix of new\, high-efficiency\, scalable technologies nee
 ds to be developed. One promising new technology could upend this and offe
 r strongly reduced cost and low CapEx production using solution processing
  with roll-to-roll techniques and low-cost rapid vapor phase deposition. H
 owever\, many barriers remain such as questions about the material’s rel
 iability\, ultimate efficiency and its scalability. Also\, these novel mat
 erials turn out to be poorly understood from a basic chemistry and physics
  perspective. This presentation discusses the current research at NREL and
  other institutes towards driving the technology rapidly towards commercia
 lization both from an applied materials and fundamental device and materia
 ls physics perspective and goes further into the technology barriers that 
 need to be dealt with before such a revolution can happen.\nSecondly\, if 
 indeed we enable a terawatt revolution in photovoltaics\, large changes ar
 e needed to the world’s energy systems. Even at the fairly low current p
 enetration levels of solar\, it is already leading to situations where sol
 ar energy has to be curtailed because the sun doesn’t always shine when 
 you need it to. It is clear that strategies are needed to deal with this p
 roblem that involve storage either using electrochemical batteries or by p
 roducing fuels from sunlight or other strategies. In 2014\, the US produce
 d 125 TWh (or 0.4 % of its total energy use) by solar. In contrast\, 2.1 q
 uads of the energy use went into production of hydrogen from steam methane
  reforming. Hydrogen can be used not just to run cars but can be used to p
 roduce liquid fuels\, fertilizer\, and is a major industrial chemical. Pro
 ducing hydrogen from renewable resources such as solar could potentially t
 ransform the entire energy economy and decrease the enormous amount of ene
 rgy that is currently wasted or rejected when renewable resources produce 
 more than is needed by the grid. There are significant technical and funda
 mental science barriers towards reaching this goal and this talk will brie
 fly discuss what basic and applied research is needed to reach this goal a
 nd compare to other approaches towards a carbon-free future.\n \n\n	Berry
 \, J. J.\, van de Lagemaat\, J.\, Al-Jassim\, M. M.\, Kurtz\, S.\, Yan\, Y
 .\, & Zhu\, K. (2017). Perovskite Photovoltaics: The Path to a Printable T
 erawatt-Scale Technology. ACS Energy Letters\, 2540–2544. http://doi.org
 /10.1021/acsenergylett.7b00964\n\n \n 
LOCATION:BCH 2201 https://plan.epfl.ch/?room==BCH%202201
STATUS:CONFIRMED
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