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Journal of Materials Science

, Volume 53, Issue 22, pp 15430–15441 | Cite as

Perovskite quantum dots as fluorescent materials for multi-colored lighting

  • Zhao Zhenfu
  • Jing Liang
  • Wu Zhihai
  • Cheng Jiong
  • Zhang Miaomiao
  • Hou Yafei
Chemical routes to materials

Abstract

Halide perovskite quantum dots (PQDs) have been intensively studied because of their superior optical properties and have great potential applications in laser, display technology and light-emitting diodes (LEDs). Presently, high-efficiency green emissive CH3NH3PbBr3 PQDs have been successfully fabricated. However, the synthesis of stable iodide-based CH3NH3PbX3 (MAPbX3 (X = Cl, Br, I), MA = CH3NH3) QDs still faces significant challenges because they are sensitive to the moisture in open air. Herein, we investigated the effect of the solvent and ligand on the growth of the as-prepared MAPbBr3 and MAPbI3 sample, mainly involved in the volume ratio of N,N-dimethylformamide (DMF) and γ-butyrolactone (GBL) and the amount of n-octylamine in toluene. The results show that the low volume ratio of DMF and GBL is beneficial to prepare highly luminescent, stable and full-colored MAPbX3 PQDs in open air. Besides, the PL emission peak of MaPbBr3 PQDs can be adjusted from 430 to 513 nm via precisely controlling the amount of n-octylamine in toluene because of quantization. The obtained MAPbX3 PQDs show high quantum yield and a wide range of tunable light emission from ultraviolet to near-infrared region. The MAPbX3 PQDs, especially iodide-based MAPbX3 PQDs, obtained from this method remain stable more than 3 months at ambient condition. We further demonstrated the multi-colored LEDs by using different color emissive MAPbX3 PQDs as color converters and being subjected to excitation through a blue GaN chip. Furthermore, MAPbX3 PQDs are expected to show interesting nanoscale optical properties and have great potential applications in electroluminescence devices, lasers and optical sensors.

Notes

Acknowledgements

This work was supported by National Natural Science Foundation of China (Grant No. 11704206), Research Fund Project of Ningbo University (Grant No. XYL18019), and K.C. Wong Magna Fund in Ningbo University.

Supplementary material

10853_2018_2774_MOESM1_ESM.docx (2.4 mb)
Supplementary material 1 (DOCX 2479 kb)

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.The Department of Microelectronics Science and Engineering, Science FacultyNingbo UniversityNingboChina
  2. 2.Beijing Institute of Nanoenergy and NanosystemsChinese Academy of ScienceBeijingChina

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