Enabling white color tunability in complex 3D-printed composites by using lead-free self-trapped exciton 2D perovskite/carbon quantum dot inks

The generation of stable white light emission using lead-free perovskites remains a huge challenge in the development of future display and lighting technologies, due to fast material deterioration and the decrease of the color quality. In this work, we report a combination of diverse types of 2D A...

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Bibliographic Details
Published in:Nanoscale 2024-05, Vol.16 (21), p.1262-1272
Main Authors: Luangwanta, Tawanwit, Turren-Cruz, Silver-Hamil, Masi, Sofia, Das Adhikari, Samrat, Recalde, Ileana B, Zanatta, Marcileia, Iglesias, Diego, Rodríguez-Pereira, Jhonatan, Gené-Marimon, Santi, Martinez-Ferrero, Eugenia, Kaowphong, Sulawan, Palomares, Emilio, Sans, Victor, Gualdrón-Reyes, Andrés F, Mora-Seró, Iván
Format: Article
Language:English
Subjects:
Broadband
Carbon dots
Excitons
Inks
Lead free
Ligands
Light emission
Optoelectronic devices
Perovskites
Quantum dots
Relative humidity
Surface stability
Three dimensional composites
White light
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Summary:The generation of stable white light emission using lead-free perovskites remains a huge challenge in the development of future display and lighting technologies, due to fast material deterioration and the decrease of the color quality. In this work, we report a combination of diverse types of 2D A 2 SnX 4 (A = bulky cation, X = Br, I) perovskites exhibiting self-trapped exciton (STE) emission and blue luminescent carbon quantum dots (CQDs), with the purpose of generating A 2 SnX 4 /CQD inks with a broadband emission in the visible region and a tunable white light color. By varying the concentration of the 2D perovskite, the white emission of the mixtures is modulated to cool, neutral, and warm tonalities, with a PL quantum yield up to 45%. From the combinations, the PEA 2 SnI 4 /CQD-based ink shows the longest stability, due to suitable surface ligand passivation provided by the capping ligands covering the CQDs, compensating the defect sites in the perovskite. Then, by incorporating the PEA 2 SnI 4 /CQDs inks into an acrylate polymer matrix, the quenching of the PL component from the perovskite was restrained, being stable for >400 h under ambient conditions and at a relative humidity of ∼50%, and allowing the preparation of complex 3D-printed composites with stable white emission tonalities. This contribution offers an application of STE-based Sn-perovskites to facilitate the future fabrication of lead-free white-light optoelectronic devices. This work reports a facile preparation of lead-free self-trapped exciton 2D A 2 SnX 4 perovskite/carbon quantum dot inks with tunable white-light emission for luminescent 3D printed composites, and potential application in optoelectronic devices.
ISSN:2040-3364
2040-3372
DOI:10.1039/d4nr00707g