Enhanced Stabilities and Production Yields of MAPbBr(3) Quantum Dots and Their Applications as Stretchable and Self-Healable Color Filters
- Authors
- Yang, Han Sol; Noh, Sung Hoon; Suh, Eui Hyun; Jung, Jaemin; Oh, Jong Gyu; Lee, Kyeong Ho; Jang, Jaeyoung
- Issue Date
- Jan-2021
- Publisher
- AMER CHEMICAL SOC
- Keywords
- MAPbBr(3) perovskite; quantum dots; methyl acetate; ligand-assisted reprecipitation; stabilities; stretching and self-healing properties; thermoplastic elastomers
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.13, no.3, pp.4374 - 4384
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 13
- Number
- 3
- Start Page
- 4374
- End Page
- 4384
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/1431
- DOI
- 10.1021/acsami.0c19287
- ISSN
- 1944-8244
- Abstract
- Organic-inorganic hybrid CH3NH3PbBr3 (MAPbBr(3)) perovskite quantum dots (PQDs) are considered as promising and cost-effective building blocks for various optoelectronic devices. However, during centrifugation for the purification of these PQDs, commonly used polar protic and aprotic non-solvents (e.g., methanol and acetone) can destroy the nanocrystal structure of MAPbBr, perovskites, which will significantly reduce the production yields and degrade the optical properties of the PQDs. This study demonstrates the use of methyl acetate (MeOAc) as an effective non-solvent for purifying as-synthesized MAPbBr(3) PQDs without causing severe damage, which facilitates attainment of stable PQD solutions with high production yields. The MeOAc-washed MAPbBr(3) PQDs maintain their high photoluminescence (PL) quantum yields and crystalline structures for long periods in solution states. 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. Time-resolved PL analysis reveals that the MeOAc-washed PQDs show suppressed non-radiative recombination and a longer PL lifetime than acetone-washed and methanol-washed PQDs. Finally, it is demonstrated that a composite of the MAPbBr(3) PQDs and a thermoplastic elastomer (polystyrene-block-polyisoprene-block-polystyrene) is feasible as a stretchable and self-healable green color filter for a white light-emitting diode device.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 에너지공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/1431)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.