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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제121회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Fabrication of CsPbX3/CsPb2X5 Quantum Dots Film-Based Monochromatic Remote-Type LED

2018년 2월 13일 16시 40분 07초
INOR.P-216 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 19일 (목요일) 11:00~12:30
Inorganic Chemistry
저자 및
HYEONGJIN LEE, Hee Chang Yoon, JoongHo Lee, YOUNG RAG DO*
Department of Chemistry, Kookmin University, Korea
In this study, we fabricated core-shell structured CsPbX3/CsPb2Br5 (X = Br, I, and a mixture of these materials) perovskite quantum dot (QD) based remote-type phosphor-converted light-emitting diodes (pc-LEDs). First, five different colors of highly efficient and narrow full-width-at-half maximum (FWHM) CsPbX3/CsPb2Br5 QDs were synthesized by a colloidal hot injection method. The quantum yields (QYs) of the CsPbX3/CsPb2Br5 QDs ranged from 85% to 95%. The peak wavelength and FWHM of each of the five CsPbX3/CsPb2Br5 QDs were measured and found to be 515–635 nm and 20–35 nm, respectively. In addition, quantum dot stability tests such as humidity, thermal, and polar solvent were conducted to confirm the enhancement the stability of CsPbX3/CsPb2Br5 in harsh condition. Moreover, to realize remote-type monochromatic pc-LEDs, green and red emissive CsPbX3/CsPb2Br5 perovskite QD films were obtained using a UV-curable resin (NOA 63). The monochromatic green and red emission peaks of the remote-type LEDs have narrow FWHMs of 20nm and 36nm, respectively. The optical properties of the CsPbX3/CsPb2Br5 QDs and their monochromatic remote-type LEDs were characterized by UV-visible, photoluminescence, and electroluminescence measurements