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| Type |
Poster Presentation |
| Area |
Inorganic Chemistry |
| Room No. |
Event Hall |
| Time |
4월 19일 (목요일) 11:00~12:30 |
| Code |
INOR.P-216 |
| Subject |
Fabrication of CsPbX3/CsPb2X5 Quantum Dots Film-Based Monochromatic Remote-Type LED |
| Authors |
HYEONGJIN LEE, Hee Chang Yoon, JoongHo Lee, YOUNG RAG DO*
Department of Chemistry, Kookmin University, Korea
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| Abstract |
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 |
| E-mail |
lhjalqp@kookmin.ac.kr |
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121st General Meeting of the KCS