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Printing Fabrication of Bulk Heterojunction Solar Cells and In Situ Morphology Characterization
Published on: January 29, 2017
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Electrohydrodynamically Printed d-f Transition Cerium(III) Complex.
Hainan Du1, Peiyu Fang2, Jiajun Luo1,3
1Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.
The Journal of Physical Chemistry Letters
|January 18, 2024
Summary
This study introduces cerium(III) complex 2-Me for inkjet printing, achieving stable blue fluorescence patterns for display applications. This pioneering work offers a new avenue for advanced display technologies.
Area of Science:
- Materials Science
- Photochemistry
- Nanotechnology
Background:
- D-f transition rare earth complexes are promising for displays due to their optical properties.
- Inkjet printing is a key technique for fabricating full-color displays.
- Inkjet printing of d-f transition rare earth complexes remains unexplored.
Purpose of the Study:
- To investigate the feasibility of using d-f transition cerium(III) complex 2-Me as an inkjet-printable luminescent material.
- To develop stable inkjet inks from 2-Me for display applications.
- To demonstrate the fabrication of fluorescent patterns using inkjet printing.
Main Methods:
- Inkjet printing of cerium(III) complex 2-Me using 1,2-dichlorobenzene as solvent and polystyrene as an additive.
- Characterization of the optical properties (emission peak, excited-state lifetime, photoluminescence quantum yield) of the printed films.
- Suppression of the coffee ring effect to achieve uniform fluorescent patterns.
Main Results:
- The 2-Me ink exhibited excellent stability, with printed films showing similar emission characteristics and excited-state lifetime to the powder.
- A high photoluminescence quantum yield (PLQY) of 45% was achieved for the 2-Me film.
- The first inkjet-printed pattern "HUST" with uniform blue fluorescence was successfully fabricated by suppressing the coffee ring effect.
Conclusions:
- Cerium(III) complex 2-Me is a viable material for inkjet printing luminescent displays.
- The developed ink formulation and printing technique enable the creation of stable, high-PLQY fluorescent patterns.
- This research opens up new possibilities for advanced display technologies utilizing inkjet-printable rare earth complexes.
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