DataVXAdvanced Optical MaterialsPaper
journal article·2023-05Open access

Steric Effects in Ruddlesden–Popper Blue Perovskites for High Quantum Efficiency

Ilgeum Lee, Omar Allam, Jiweon Kim, Yixuan Dou, Hyungju Ahn, Andrew Proppe, Yitong Dong, Dongxin Ma, Li Na Quan, Edward H. Sargent, Seung Soon Jang, Dong Ha Kim

Advanced Optical Materials· Volume 11· Issue 10
Publisher pageOpen full text
Source abstract

Abstract

Abstract Ruddlesden–Popper perovskites (RPPs) feature enhanced stability compared to their bulk counterparts and attract attention for potential applications in light‐emitting diodes (LEDs). However, to date, blue‐emitting RPPs rely on halide compositional tuning, resulting in spectral shifts due to halide segregation under photo‐/electrical‐excitation. Here, efficient blue‐emitting materials with single‐halide RPPs using organic spacer engineering are reported. Experimental and computational results show that the (110)‐oriented thin films exhibit larger bandgap and enhanced stability regardless of the choice of spacers, relative to the (100)‐oriented RPPs. The correlation between the lattice structures and optoelectronic properties reveals that this new class of RPPs exhibits sky‐blue emission at 483 nm with a quantum efficiency of ≈62%. Spearman correlation between the steric size of the spacers and the bandgap is estimated to be 92%, showing that the steric effect is crucial influencers. The protocol and strategy established in this study can be exploited to develop blue perovskite LEDs.
Source: crossref · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Organic Light-Emitting Diodes Research · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemistry and Nano Science Ewha Womans University 52, Ewhayeodae‐gil, Seodaemun‐gu Seoul 03760 Republic of Korea

The George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology 801 Ferst Drive Atlanta GA 30332‐0405 USA

School of Materials Science and Engineering Georgia Institute of Technology 771 Ferst Drive Atlanta GA 30332‐0245 USA

Department of Chemistry Virginia Tech 1040 Drillfield Dr. Blacksburg Blacksburg VA 24060 USA

Pohang Accelerator Laboratory Pohang University of Science and Technology 80 Jigok‐ro, Nam‐gu Pohang 37673 Republic of Korea

Department of Electrical and Computer Engineering University of Toronto 10 King's College Road Toronto Ontario M5S 3G4 Canada

Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3E4 Canada

Basic Sciences Research Institute (Priority Research Institute) Ewha Womans University 52, Ewhayeodae‐gil, Seodaemun‐gu Seoul 03760 Republic of Korea

Nanobio∙Energy Materials Center (National Research Facilities and Equipment Center) Ewha Womans University 52, Ewhayeodae‐gil, Seodaemun‐gu Seoul 03760 Republic of Korea

References (33)

Show source-provided references
1. 10.1126/science.aad181810.1126/science.aad1818 ↗
2. 10.1038/s41467-019-08561-y10.1038/s41467-019-08561-y ↗
3. 10.1038/nnano.2016.11010.1038/nnano.2016.110 ↗
4. 10.1038/s41566-019-0390-x10.1038/s41566-019-0390-x ↗
5. 10.1038/s41586-018-0575-310.1038/s41586-018-0575-3 ↗
6. 10.1002/advs.20150019410.1002/advs.201500194 ↗
7. 10.1038/s41467-019-09047-710.1038/s41467-019-09047-7 ↗
8. 10.1039/C9EE02162K10.1039/C9EE02162K ↗
9. 10.1038/s41467-017-00284-210.1038/s41467-017-00284-2 ↗
10. 10.1021/acs.nanolett.7b0097610.1021/acs.nanolett.7b00976 ↗
11. 10.1002/adfm.20190386110.1002/adfm.201903861 ↗
12. 10.1038/s41467-019-09011-510.1038/s41467-019-09011-5 ↗
13. 10.1038/s41467-018-05909-810.1038/s41467-018-05909-8 ↗
14. 10.1038/s41467-019-09794-710.1038/s41467-019-09794-7 ↗
15. 10.1002/smll.20200294010.1002/smll.202002940 ↗
16. 10.1021/acs.jpclett.7b0208310.1021/acs.jpclett.7b02083 ↗
17. 10.1039/C0JM02121K10.1039/C0JM02121K ↗
18. 10.1016/j.actamat.2009.03.03710.1016/j.actamat.2009.03.037 ↗
19. 10.1002/adma.20170421710.1002/adma.201704217 ↗
20. 10.1039/C7QM00472A10.1039/C7QM00472A ↗
21. 10.1038/ncomms675710.1038/ncomms6757 ↗
22. 10.1021/cm401205210.1021/cm4012052 ↗
23. 10.1126/science.267.5203.147310.1126/science.267.5203.1473 ↗
24. 10.1002/adma.20190151710.1002/adma.201901517 ↗
25. 10.1038/s41586-018-0576-210.1038/s41586-018-0576-2 ↗
26. 10.1002/aenm.20170013110.1002/aenm.201700131 ↗
27. 10.1021/jacs.7b1115710.1021/jacs.7b11157 ↗
28. 10.1038/nature1830610.1038/nature18306 ↗
29. 10.1038/s41563-018-0154-x10.1038/s41563-018-0154-x ↗
30. Segall M. D. · J. Phys.: Condens. Matter · 2002 · 119 · 67
31. Fuchs M. · Comput. Phys. Commun. · 1999 · 17 · 900
32. 10.1007/BF0153796210.1007/BF01537962 ↗
33. 10.1002/anie.20161002910.1002/anie.201610029 ↗