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연사 Aron Walsh
강좌일시 2017. 4. 18.(화)  16:00~17:00
강좌 제목 Emerging materials for solar energy: halide perovskites and beyond

미래창조과학부 글로벌프론티어 (재)멀티스케일 에너지 시스템 연구단은 나노기술과 에너지 기술의 융합을 통하여 혁신적 미래 광에너지와 분자에너지 원천기술 개발을 목표로 하는 멀티스케일 에너지 시스템 연구사업을 추진하고 있습니다. 연구단에서 국제 저명인사 초청 멀티스케일 에너지 강좌를 개최합니다. 관심 있는 분들의 많은 참석 바랍니다.

1. 제  목 : Emerging materials for solar energy: halide perovskites and beyond

2. 연  사 : Aron Walsh(Department of Materials, Imperial College London, UK)

3. 일  시 : 2017년 4월 18일 (화), 16:00~17:00

4. 장  소 : 서울대학교 301동 1419호

5. 내  용 : There are a large variety of materials being developed for application in solar energy conversion. The majority are based upon naturally occurring minerals (so-called solar mineralogy). The general procedure has been to take a multi-component system and tune the chemical composition to optimise optical absorption for the terrestrial solar spectrum. Other factors also determine whether a material can be practically employed in a photovoltaic or photoelectrochemical system, for example, the absolute band energies (work functions), defect physics, and chemical stability. I will present our recent progress into the design and optimisation of new solar energy materials with an emphasis on computing photovoltaic performance descriptors from materials simulations [1-5], including advances in structure-property relationships in the kesterite (e.g. Cu2ZnSnS4) and perovskite (e.g. CsSnI3 and CH3NH3PbI3) families, in addition to the matlockite (PbFCl type) and herzenbergite (SnS type) systems. New directions in the field, such as the development of photoferroic materials, will also be addressed.

     [1] “The steady rise of kesterite solar cells”, ACS Energy Lett. 2, 776 (2017)

     [2] “Indirect to direct bandgap transition in methylammonium lead halide perovskite”,

          Energy Environ. Sci. 10, 509 (2017)

     [3] “Metastable cubic tin sulfide: A novel phonon-stable chiral semiconductor”,

          APL Mater. 5, 6101 (2017)

     [4] “Relativistic origin of slow electron-hole recombination in hybrid halide perovskite solar cells”,

          APL Mater. 4, 91501 (2016)

     [5] “Ferroelectric materials for solar energy conversion: photoferroics revisited”

          Energy & Environmental Science 8, 838 (2015)

6. 약  력 :

    Aron Walsh is Professor of Materials Design in the Department of Materials at Imperial College London. He was awarded his Ph.D in chemistry from Trinity College Dublin, completed a postdoctoral position at the National Renewable Energy Laboratory (USA), and held a Marie Curie fellowship at University College London. He began his independent research career at the University of Bath and held a Royal Society University Research Fellowship in the Department of Chemistry. His research combines technique development and applications at the interface between solid-state chemistry and physics. He has published over 200 papers with an h-index of 62. In 2015 he was awarded the EU-40 prize from the Materials Research Society for his work on the theory of solar energy materials.

문  의 : 멀티스케일 에너지 시스템 연구단 연구지원본부 (☏ 889-6669,6670)

         최만수 교수 (기계항공공학부)