| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
콜로이드 및 분자조립 부문위원회 I |
| 제목 |
Facile Route to Highly Stable CH3NH3PbBr3 Quantum Dots with High Production Yields and Their Optoelectronic Applications |
| 초록 |
CH3NH3PbBr3 (MAPbBr3) perovskite quantum dots (QDs) have attracted great attention as promising and cost-effective elements for optoelectronic devices. However, commonly used polar non-solvents can damage the QD cores during centrifugation for purification, which significantly diminish their production yields and optical properties. Here, we introduce an effective non-solvent to purify as-synthesized MAPbBr3 QDs without severe damage, obtaining stable QDs with high production yields. The washed MAPbBr3 QDs maintained their high photoluminescence (PL) quantum yields and crystalline structures for long times. Time-resolved (PL) analysis revealed that the QDs showed suppressed non-radiative recombination and a prolonged (PL) lifetime, supporting the minimized damage on the QDs. Finally, we fabricated stretchable and self-healable green color filters for the demonstration of white light-emitting diodes by composing the MAPbBr3 QDs with a thermoplastic elastomer. |
| 저자 |
양한솔, 장재영, 노성훈, 서의현, 정재민, 오종규, 이경호
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| 소속 |
한양대 |
| 키워드 |
MAPbBr3 perovskite; quantum dots; methylacetate; ligand-assisted reprecipitation; non-solvent; colloidal stability
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| E-Mail |
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