화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2021년 가을 (11/03 ~ 11/05, 대구 엑스코(EXCO))
권호 25권 2호
발표분야 포스터-에너지저장·변환
제목 Retarding the Halide Interaction among CsPbBr3 and CsPbI3 Perovskite Quantum Dots: Introducing Cs-oleate Capping on the Quantum Dot to Increase Activation Energies
초록 All-inorganic CsPbX3 (X: Cl, Br, or I) perovskite quantum dots (PQDs) have studied due to their excellent potentials to versatile applications. One of the applications, about the while light emitting diodes (LEDs) and white backlight, the one of major technical issues is to reduce pixel size as well as enhance the radiative process. With the high PLQY, the PQDs could be one of the excellent candidates for the LEDs. One problem to emit the white light from the PQDs is that changing their emissions to single emission due to halide exchange process among the PQDs. Therefore, it is necessary to block or retard the halide migration to protect identical emissions for the each PQDs. In this work, by introducing the Cs-oleate capping on the PQDs to retard the halide migration process. We investigated kinetics of halide migration process with presence of the Cs-oleate capping layer as well as the effect of capping process to activation energy for the halide exchange process.
저자 박세은, 우연수, 윤석준
소속 영남대
키워드 perovskite; quantum dots; halide ion; exchange
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