Speaker: 서장원 책임연구원(한국화학연구원)

Date & Time: 2019년 9월 25일(수), 17:00

Where: D-122호

Abstract

Current perovskite solar cells (PSCs) intended for commercialization in the near future require both high efficiency and good long-term stability. Most highly efficient PSCs utilize an n-type layer of mesoporous titanium dioxide in an n-i-p device configuration, in which organic conductors are widely used to transport holes into an adjoined metal. Thus far, a variety of efforts have been devoted to achieve a defect-less perovskite film with high-quality morphologies to realize reduced loss-in-potential outcomes and enhanced efficiency levels. In this talk, we will discuss several challenges that need to be addressed in improving the photovoltaic performance and the stability of the perovskite solar cells, i.e. (1) preparation of high crystalline film of (FAPbI3)1-x(MAPbBr3)x with a large grain size and a preferred orientation, (2) development of selective charge-transporting layers (CTL) with a superior stability, (3) interfacial control and energy level matching between the perovskite and the CTLs. Finally, we will briefly introduce our progress on the development of scalable perovskite solar cells based on gravure-printing technique. Our strategy as presented in this work will offer new directions for those involved in the fabrication of highly efficient, stable and scalable PSCs.

Biography

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Ph.D School of Materials Science and Engineering, Seoul National University, Seoul, Korea <2006>

M.S. Department of Fiber and Polymer Science, Seoul National University, Seoul, Korea <2000>

B.S. Department of Fiber and Polymer Science , Seoul National University, Seoul, Korea <1998>

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Principal/Senior Researcher, Energy Materials Research Center, Korea Research Institute of Chemical Technology <2013 – present>

Research Professor, Department of Materials Science and Engineering, Seoul National University <2012 – 2013>

Postdoctoral Associate, Institute for Lasers, Photonics, and Biophotonics, University at Buffalo, State University of New York <2008 – 2012>

초청자 : 융합과학부 나노융합전공 김창순 교수 (changsoon@snu.ac.kr)