화학공학소재연구정보센터
학회 한국화학공학회
학술대회 2021년 가을 (10/27 ~ 10/29, 광주 김대중컨벤션센터)
권호 27권 2호, p.1440
발표분야 공업화학
제목 Improved Production Yields and Stabilities of MAPbBr3 Perovskite Quantum Dots and Their Use in Stretchable and Self-Healable Color Filters
초록 Organic–inorganic hybrid CH3NH3PbBr3 (MAPbBr3) perovskite quantum dots (PQDs) are considered promising for optoelectronic devices. However, during purification, polar protic and aprotic non-solvents can destruct the structure of MAPbBr3 perovskites. This significantly lowers the production yields and degrades the optical properties of the PQDs. Herein, we demonstrate the feasibility of using methyl acetate (MeOAc) as an effective non-solvent for purifying MAPbBr3 with high production yields. The MeOAc-washed MAPbBr3 PQDs maintain their high photoluminescence quantum yields and crystalline structures for long periods with suppressed nonradiative recombination. MeOAc undergoes a hydrolysis reaction in the presence of the PQDs, and the resulting acetate anions partially replace the original surface ligands without damaging the PQD cores. Lastly, the PQDs were composed with a thermoplastic elastomer to obtain stretchable and self-healable color filters for a white light-emitting diode.
저자 양한솔, 노성훈, 서의현, 정재민, 오종규, 장재영
소속 한양대
키워드 나노소재
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