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제118회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Crystallography of aligned hybrid perovskite single crystal arrays

2016년 8월 31일 17시 08분 46초
PHYS.P-429 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 13일 (목요일) 11:00~12:30
저자 및
이린, 성명모*
한양대학교 화학과, Korea
Lead halide perovskites CH3NH3PbX3 (X=Cl, Br, I) have received great attention because of their excellent photoelectronic properties as well as their low-cost device fabrication process. As an example, their theoretical efficiency limit of the solar cell devices was predicted around 31% by a detailed balance model for the reason that exceptional light-harvesting and superior carrier transport properties. Additionally, these excellent properties contribute to the applications of optoelectronic devices such as LASERs, LEDs, and photodetectors. Typically, one of the most important factor to decide the efficiency of these applications is the quality of the crystal. Even though, optoelectrical devices are composed of polycrystalline thin film in general, not a single crystalline form which has longer carrier diffusion length and lower trap density. For these reasons, perovskite single crystals have potential to elicit an optimized device efficiency. In this study, we analyzed the crystallography of the aligned perovskite single crystal arrays by X-ray diffraction (XRD) and selected area electron diffraction (SAED). Also the basic optic properties of perovskites were checked using optical mocriscope (OM) and scanning electron microscopy (SEM). From this work, the perovskite which is aligned in all directions both of out-of-plane and in-plane was fabricated and analyzed.