Inkjet Printing Matrix Perovskite Quantum Dot Light‐Emitting Devices

Perovskite light emitting devices have been expected to be utilized in the field of displays. In this work, a stable FA0.3Cs0.7PbBr3 perovskite quantum dot ink with optimized octane:dodecane cosolvent is obtained by introducing a trace amount of long‐chain ligand of oleylamine (OAm) during the quant...

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Bibliographic Details
Published in:Advanced materials technologies 2020-06, Vol.5 (6), p.n/a
Main Authors: Li, Danyang, Wang, Junjie, Li, Miaozi, Xie, Gancheng, Guo, Biao, Mu, Lan, Li, Haiyang, Wang, Jian, Yip, Hin‐Lap, Peng, Junbiao
Format: Article
Language:English
Subjects:
inkjet printing
light‐emitting diodes
perovskite quantum dots
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Summary:Perovskite light emitting devices have been expected to be utilized in the field of displays. In this work, a stable FA0.3Cs0.7PbBr3 perovskite quantum dot ink with optimized octane:dodecane cosolvent is obtained by introducing a trace amount of long‐chain ligand of oleylamine (OAm) during the quantum dot purification process. A green electroluminescent matrix device with 120 pixels per inch (PPI) is realized from the ink by using an inkjet printing technique, exhibiting a luminance of 1233 cd m−2, a peak current efficiency of 10.3 cd A−1, and an external quantum efficiency of 2.8%. The results may suggest a possibility of making perovskite quantum dot displays by using the inkjet printing technique. A green electroluminescent matrix device with 120 pixels per inch (PPI) is realized from the FA0.3Cs0.7PbBr3 perovskite quantum dot ink by using an inkjet printing technique, exhibiting a luminance of 1233 cd m−2, a peak current efficiency of 10.3 cd A−1, and an external quantum efficiency of 2.8%.
ISSN:2365-709X
2365-709X
DOI:10.1002/admt.202000099