Stretchable and self-healable organometal halide perovskite nanocrystal-embedded polymer gels with enhanced luminescence stability

Nanophotonics

article

Minjie Fang¹  Sihui Huang¹  Dong Li¹  Chunli Jiang¹  Pei Tian¹  Hechun Lin¹  Chunhua Luo¹  Wenlei Yu²  Hui Peng¹ 

[1] Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Optoelectronic Science and Engineering, East China Normal University;Department of Biomedical Engineering, Wenzhou Medical University;Collaborative Innovation Center of Extreme Optics, Shanxi University

关键词: luminescent;    organometal halide perovskite nanocrystals;    poly(dimethylsiloxane)-urea gel;    self-healable;    soft optical devices;   

DOI  :  10.1515/nanoph-2018-0126

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Stretchable and self-healing polymer gels with luminescent property are very promising materials for next generation soft optical devices. This work presents the preparation of self-healing and luminescent polymer gels by simply blending organometal halide perovskite nanocrystals (OHP NCs) with poly(dimethylsiloxane)-urea copolymer (PDMS-urea). On the one hand, the obtained luminescent gels are not only flexible, stretchable and relatively transparent, they also exhibit excellent self-healing capability due to the reversible hydrogen bonding network in the PDMS-urea copolymer. On the other hand, the embedding of OHP NCs (MAPbBr 3 and MAPbI 3 NCs) inside the hydrophobic PDMS-urea gel greatly improved the photoluminescence stability of OHP NCs against water. Their applications as phosphors for LEDs have been demonstrated. Both the MAPbBr 3 /PDMS-urea gel and MAPbI 3 /PDMS-urea gel can fully convert the blue emission of GaN chip to green and red emissions, respectively. These gels can be used as photoluminescent materials in flexible optical devices with good self-healing capability.

【 授权许可】

CC BY