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Metadata Files

Data Publication

Responsive optical materials based on ligand-free perovskite quantum dots embedded in mesoporous scaffolds

DIGITAL.CSIC

(2022)

Descriptions

Herein we show that dispersing inorganic Cesium Lead Bromide (CsPbBr3) perovskite quantum dots (QDs) in optical quality films, possessing an accessible and controlled pore size distribution, gives rise to fluorescent materials with a controlled and highly sensitive response to ambient changes. A scaffold based synthetic approach is employed to attain ligand-free QDs, whose pristine surface endows them with high sensitivity to the presence of different vapors in their vicinity. At the same time, the void network of the host offers a means to gradually expose the embedded QDs to such vapors. Under these conditions, the luminescent response of the QDs is mediated by the mesostructure of the matrix, which determines the rate at which vapor molecules will adsorb onto the pore walls and, eventually, condensate, filling the void space. With luminescence quantum yields as high as 60%, scaffold supported ligand-free perovskite nanocrystals display intense photoemission signals over the whole process, as well as high photo and chemical stability, which allows illuminating them for long periods of time and recovering the original response upon desorption of the condensed phase. The results herein presented open a new route to explore the application of perovskite QDs based materials in sensing.

Keywords

Originally assigned keywords

Responsive materials

CsPbBr3

Nanocrystals

Optical properties

Porous materials

MSL enriched keywords

minerals

oxide mineral

perovskite

Inferred deformation behavior

microphysical deformation mechanism

fluid desorption

measured property

bromide

cesium

Analyzed feature

pore structure and distribution

pore size

pore size distribution

MSL enriched sub domains i

rock and melt physics

geochemistry

microscopy and tomography

Source

https://digital.csic.es/handle/10261/284790

Source publisher

DIGITAL.CSIC

DOI

10.20350/digitalcsic/14818

Creators

Romero-P??Rez, Carlos

Zanetta, Andrea

Fern??Ndez-Delgado, Natalia

Herrera Collado, Miriam

Hern??Ndez-Saz, Jes??S

Molina, Sergio I.

Cali??, Laura

Calvo, Mauricio E.

M??Guez, Hern??N

Contributors

Digital.CSIC

DataManager

Digital.CSIC

HostingInstitution

References

10.1021/acsami.2c16867

Citation

Romero-P??Rez, C., Zanetta, A., Fern??Ndez-Delgado, N., Herrera Collado, M., Hern??Ndez-Saz, J. S., Molina, S. I., Cali??, L., Calvo, M. E., & M??Guez, H. N. (2022). Responsive optical materials based on ligand-free perovskite quantum dots embedded in mesoporous scaffolds [Data set]. DIGITAL.CSIC. https://doi.org/10.20350/DIGITALCSIC/14818

Dates

Accepted:

2022-12-14

Available:

2022-12-14

Created:

2022-11-29

Issued:

2022-12-14

Language

Funding References

Funder name: Financial support of the Spanish Ministry of Science and Innovation under grant PID2020-116593RB-I00, funded by MCIN/AEI/10.13039/501100011033, and of the Junta de Andaluc??a under grant P18-RT-2291 (FEDER/UE) is gratefully acknowledged. L.C. thanks Junta de Andaluc??a and the European Regional Development Funds program (EU-FEDER) for financial support under a talent attraction program (DOC_00220). Also, N.F.D. acknowledges co-funding by European Social Fund and Junta de Andaluc??a for PAIDI2020 (DOC_01244).

Rights

openAccess

Creative Commons Attribution Non Commercial 4.0 International