121st General Meeting of the KCS

Type Poster Presentation
Area Environmental Energy
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code ENVR.P-665
Subject Thin Film Encapsulation for Enhanced Stability of Efficient Perovskite Solar Cells
Authors Nam Joong Jeon
Solar Energy Materials, Korea Research Institute of Chemical Technology, Korea
Abstract The stability of perovskite solar cell (PSC) is enhanced significantly by applying a customized thin film encapsulation (TFE). The TFE is composed of a multilayer stack of organic/inorganic layers deposited by initiated chemical vapor deposition and atomic layer deposition, respectively, whose water vapor transmission rate is in order of 10-4 gm-2day-1 at an accelerated condition of 38 °C, 90% relative humidity (RH). The TFE is optimized in the consideration of various aspects for the thermo-sensitive PSCs. Especially, lowering the process temperature is one of utmost importance to minimize potential thermal damage to PSC during the monolithic integration of TFE onto PSC. The direct deposition of four dyads of TFE onto PSC causes less than 0.3 % of degradation (from 18.5 % to 18.2 %) in the power conversion efficiency while the long-term stability is substantially improved; the PSC retains 97% of its original efficiency after 300 hr exposure to an accelerated condition of 50 °C, 50% RH, confirming the enhanced stability of the PSC against moisture.
E-mail njjeon@krict.re.kr