Abstract
Halide perovskite materials offer an ideal playground for easily tuning their color and, accordingly, the spectral range of their emitted light. In contrast to common procedures, this work demonstrates that halide substitution in Ruddlesden–Popper perovskites not only progressively modulates the bandgap, but it can also be a powerful tool to control the nanoscale phase segregation—by adjusting the halide ratio and therefore the spatial distribution of recombination centers. As a result, thin films of chloride-rich perovskite are engineered—which appear transparent to the human eye—with controlled tunable emission in the green. This is due to a rational halide substitution with iodide or bromide leading to a spatial distribution of phases where the minor component is responsible for the tunable emission, as identified by combined hyperspectral photoluminescence imaging and elemental mapping. This work paves the way for the next generation of highly tunable transparent emissive materials, which can be used as light-emitting pixels in advanced and low-cost optoelectronics.
| Original language | English |
|---|---|
| Article number | 2105942 |
| Journal | Advanced Materials |
| Volume | 34 |
| Issue number | 1 |
| DOIs | |
| State | Published - 6 Jan 2022 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2021 The Authors. Advanced Materials published by Wiley-VCH GmbH
Funding
A.Z and Z.A.‐G. contributed equally to this work. A.Z. and G.G. acknowledge the “HY‐NANO” project that received funding from the European Research Council (ERC) Starting Grant 2018 under the European Union's Horizon 2020 research and innovation programme (Grant Agreement No. 802862). The authors acknowledge the project GO for IT that received funding from Fondazione CRUI. G.G. acknowledges the Project EXPRESS that received funding from the program FARE Ricerca In Italia (No. R18ENKMTA3). The authors acknowledge Prof. Matteo Alvaro and Dr. Stefania Righetto for the use of the Raman facility at the Department of Earth Sciences of the University of Pavia (Italy). G.G. acknowledges Dr. Albertus Sutanto and Dr. Valentin Queloz for fruitful discussion. K.F. acknowledges a George and Lilian Schiff Studentship, Winton Studentship, the Engineering and Physical Sciences Research Council (EPSRC) studentship, Cambridge Trust Scholarship, and Robert Gardiner Scholarship. F.U.K. thanks the Jardine Foundation and Cambridge Trust for a doctoral scholarship. This work received funding from the European Research Council under the European Union's Horizon 2020 research and innovation programme (HYPERION – Grant Agreement No. 756962). The authors acknowledge the EPSRC (EP/R023980/1) for funding. S.D.S. acknowledges the Royal Society and Tata Group (UF150033). A.Z and Z.A.-G. contributed equally to this work. A.Z. and G.G. acknowledge the ?HY-NANO? project that received funding from the European Research Council (ERC) Starting Grant 2018 under the European Union's Horizon 2020 research and innovation programme (Grant Agreement No. 802862). The authors acknowledge the project GO for IT that received funding from Fondazione CRUI. G.G. acknowledges the Project EXPRESS that received funding from the program FARE Ricerca In Italia (No. R18ENKMTA3). The authors acknowledge Prof. Matteo Alvaro and Dr. Stefania Righetto for the use of the Raman facility at the Department of Earth Sciences of the University of Pavia (Italy). G.G. acknowledges Dr. Albertus Sutanto and Dr. Valentin Queloz for fruitful discussion. K.F. acknowledges a George and Lilian Schiff Studentship, Winton Studentship, the Engineering and Physical Sciences Research Council (EPSRC) studentship, Cambridge Trust Scholarship, and Robert Gardiner Scholarship. F.U.K. thanks the Jardine Foundation and Cambridge Trust for a doctoral scholarship. This work received funding from the European Research Council under the European Union's Horizon 2020 research and innovation programme (HYPERION ? Grant Agreement No. 756962). The authors acknowledge the EPSRC (EP/R023980/1) for funding. S.D.S. acknowledges the Royal Society and Tata Group (UF150033). Open Access Funding provided by Universita degli Studi di Pavia within the CRUI-CARE Agreement.
| Funders | Funder number |
|---|---|
| Fondazione CRUI | R18ENKMTA3 |
| HYPERION | |
| Jardine Foundation | EP/R023980/1 |
| Horizon 2020 Framework Programme | 756962 |
| Engineering and Physical Sciences Research Council | |
| Royal Society | |
| European Commission | |
| Università degli Studi di Pavia | |
| Gates Cambridge Trust | |
| Horizon 2020 | 802862 |
| Tata Sons | UF150033 |