https://scholars.lib.ntu.edu.tw/handle/123456789/580987
標題: | A deep-dyeing strategy for ultra-stable, brightly luminescent perovskite-polymer composites | 作者: | Zhang C He Z Mogensen M Gesquiere A.J Chen C.-H Chiu T.-L Lee J.-H Wu S.-T Dong Y. JIUN-HAW LEE |
關鍵字: | Color; Composite materials; Composite structures; Cost effectiveness; Dyeing; Emission spectroscopy; Laser excitation; Lighting; Perovskite; Polymers; Space division multiple access; Cost-effective approach; Environmental instability; Environmental stability; Heating-cooling cycle; Manufacturing process; Solid state lighting; Swelling-deswelling; Visible degradation; Polyethylene terephthalates | 公開日期: | 2021 | 卷: | 9 | 期: | 10 | 起(迄)頁: | 3396-3402 | 來源出版物: | Journal of Materials Chemistry C | 摘要: | To fulfill the requests of highly vivid colors in displays and customized spectra in solid-state lighting (SSL), a cost-effective approach to create color-tunable downconverters with narrow emission spectra is in demand. In this regard, perovskite nanocrystal downconverters have aroused great interest due to their narrow-band, tunable emission and easy manufacturing process. However, environmental instability is still the major concern of their commercialization, especially for red-emitting downconverters. Herein, built upon the previous successful development of a swelling-deswelling microencapsulation (SDM) method, we report a deep-dyeing strategy that can directly convert commercial solvent-resistant polymer matrices (e.g.polyethylene terephthalate (PET)) into polymer-protected deep-dyed perovskite polymer composites (DDPPCs) with outstanding color tunability, excellent pure color, and superior environmental stability. The MAPbBr3-based DDPPCs manifest a high photoluminescent quantum yield of 77.9%. Moreover, they survived in water for over 3 years without visible degradation, their photoluminescence (PL) is reversible under a 140 °C heating-cooling cycle, and they maintained 87.6% of the original PL intensity after 10 hours of continuous blue laser excitation. More importantly, the as-synthesized CsPbBr0.75I2.25-based red DDPPCs also exhibit excellent water-, thermal-, and photo-stability. The deep-dyeing process is expected to achieve highly stable PPCs for next-generation displays, SSL or other applications. ? The Royal Society of Chemistry 2021. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102957585&doi=10.1039%2fd1tc00042j&partnerID=40&md5=b7d7b9577a1548167735c2ef009dff2b https://scholars.lib.ntu.edu.tw/handle/123456789/580987 |
ISSN: | 20507534 | DOI: | 10.1039/d1tc00042j |
顯示於: | 電機工程學系 |
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