Broadband Defects Emission and Enhanced Ligand Raman Scattering in 0D Cs3Bi2I9 Colloidal Nanocrystals
Source abstract
Abstract
Abstract Excitonic 0D and 2D lead‐halide perovskites have been recently developed and investigated as new materials for light generation. Here broadband (>1 eV) emission from newly synthesized 0D lead‐free colloidal Cs3Bi2I9 nanocrystals (NCs) is reported. The nature of their emissive states as well as the relative dynamics which are currently hotly debated are investigated. In particular, it is found that the broadband emission is made by the coexistence of emissive excitons and sub‐bandgap emissive trap‐states. Remarkably, evidence of enhanced Raman scattering from the ligands is observed when attached to the NCs surface, an effect that is preliminarily attributed to strong exciton‐ligands electronic coupling in these systems.
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Research context
OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · 2D Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Istituto Italiano di Tecnologia Center for Nano Science and Technology Via Pascoli 70/3 20133 Milano Italy
SRM‐University AP Amaravati, Guntur AP 522502 India
Istituto Italiano di Tecnologia Nanochemistry Department Via Morego 30 16163 Genova Italy
Politecnico di Milano Dipartimento di Fisica Piazza Leonardo da Vinci 32 20133 Milano Italy
Funding
Horizon 2020 Framework Programme
References (35)
Show source-provided references
1. 10.1021/jacs.6b1039010.1021/jacs.6b10390 ↗
2. 10.1039/C7SC04539E10.1039/C7SC04539E ↗
3. 10.1021/acs.accounts.7b0043310.1021/acs.accounts.7b00433 ↗
4. 10.1002/pssb.20155280510.1002/pssb.201552805 ↗
5. 10.1126/science.122860410.1126/science.1228604 ↗
6. 10.1126/science.124398210.1126/science.1243982 ↗
7. 10.1038/nnano.2014.14910.1038/nnano.2014.149 ↗
8. 10.1038/nmat427110.1038/nmat4271 ↗
9. 10.1021/ja507086b10.1021/ja507086b ↗
10. 10.1103/PhysRevB.87.12542110.1103/PhysRevB.87.125421 ↗
11. 10.1021/acs.jpclett.5b0174710.1021/acs.jpclett.5b01747 ↗
12. 10.1002/adma.20150197810.1002/adma.201501978 ↗
13. 10.1021/acs.jpclett.6b0257810.1021/acs.jpclett.6b02578 ↗
14. 10.1021/acs.jpcc.6b1242610.1021/acs.jpcc.6b12426 ↗
15. 10.1021/jacs.8b0154310.1021/jacs.8b01543 ↗
16. 10.1021/acs.nanolett.7b0465910.1021/acs.nanolett.7b04659 ↗
17. 10.1021/acs.nanolett.8b0056010.1021/acs.nanolett.8b00560 ↗
18. 10.1021/acs.inorgchem.6b0157110.1021/acs.inorgchem.6b01571 ↗
19. 10.1021/acs.chemmater.7b0118410.1021/acs.chemmater.7b01184 ↗
20. 10.1002/anie.20170473910.1002/anie.201704739 ↗
21. 10.1021/acs.jpclett.7b0138110.1021/acs.jpclett.7b01381 ↗
22. 10.1021/acsnano.6b0832410.1021/acsnano.6b08324 ↗
23. 10.1143/JPSJ.65.146410.1143/JPSJ.65.1464 ↗
24. 10.1039/C6MH00519E10.1039/C6MH00519E ↗
25. 10.1021/acs.accounts.5b0046410.1021/acs.accounts.5b00464 ↗
26. 10.1039/C7CC07223F10.1039/C7CC07223F ↗
27. 10.1002/anie.20160816010.1002/anie.201608160 ↗
28. 10.1021/acs.jpclett.5b0202210.1021/acs.jpclett.5b02022 ↗
29. 10.1016/0022-2313(88)90045-210.1016/0022-2313(88)90045-2 ↗
30. 10.1021/acsenergylett.6b0035510.1021/acsenergylett.6b00355 ↗
31. 10.1016/j.solmat.2016.01.03510.1016/j.solmat.2016.01.035 ↗
32. 10.1039/C8EE00124C10.1039/C8EE00124C ↗
33. 10.1103/PhysRevB.83.20520210.1103/PhysRevB.83.205202 ↗
34. 10.1016/S0009-3084(00)00207-310.1016/S0009-3084(00)00207-3 ↗
35. 10.1021/acs.jpclett.5b0156710.1021/acs.jpclett.5b01567 ↗