Anomalous Polarons in Two‐Dimensional Organometallic Perovskite Ferroelectric
Source abstract
Abstract
Abstract The concept of ferroelectric polarons is proposed to partially explain the exceptional optoelectronic properties observed in lead halide perovskites (LHPs). It is intriguing but unclear how this proposal, which involves local or transient polarizations, applies in general to 2D LHPs with long‐range ferroelectricity. Here, this work presents a pioneering time‐domain experimental investigation of polarons in ferroelectric (IA)2(MA)2Pb3Br10 (IMPB; IA is isoamylammonium and MA is methylammonium) using transient absorption spectroscopy. Compared to non‐ferroelectric LHPs, IMPB exhibits several distinct polaronic properties closely associated with macroscopic polarizations of ferroelectricity, including a prolonged polaron formation time (≈1.1 ps), a Stark splitting of the bleaching (≈63 meV), and a giant polaron Mott density (≈7.6 × 1018 cm−3). These findings broaden the realm of 2D polaron systems and reveal the decisive role of static/unidirectional polarizations on polaron physics in 2D LHPs.
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Research context
OpenAlex topics: Perovskite Materials and Applications · Solid-state spectroscopy and crystallography · Ferroelectric and Piezoelectric Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratory for Shock Wave and Detonation Physics Institute of Fluid Physics China Academy of Engineering Physics Mianyang 621900 China
State Key Laboratory for Environment‐Friendly Energy Materials Southwest University of Science and Technology Mianyang 621010 China
State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China
Department of Physics College of Physics and Information Engineering Fuzhou University Fuzhou Fujian 350108 China
Funding
Science Challenge Project · National Natural Science Foundation of China · Southwest University of Science and Technology
References (67)
Show source-provided references
1. 10.1021/ja809598r10.1021/ja809598r ↗
2. 10.1038/nature1106710.1038/nature11067 ↗
3. 10.1126/science.122860410.1126/science.1228604 ↗
4. Miyasaka T. · 2021
5. Fujiwara H. · 2022
6. 10.1038/s41377-021-00488-810.1038/s41377-021-00488-8 ↗
7. 10.1038/ncomms838310.1038/ncomms8383 ↗
8. 10.1038/s41586-018-0575-310.1038/s41586-018-0575-3 ↗
9. 10.1038/s41586-018-0451-110.1038/s41586-018-0451-1 ↗
10. 10.1126/science.aam632310.1126/science.aam6323 ↗
11. 10.1021/acs.chemrev.6b0013610.1021/acs.chemrev.6b00136 ↗
12. 10.1038/nenergy.2016.4810.1038/nenergy.2016.48 ↗
13. 10.1038/natrevmats.2015.710.1038/natrevmats.2015.7 ↗
14. 10.1126/science.aaf957010.1126/science.aaf9570 ↗
15. 10.1038/s41563-018-0068-710.1038/s41563-018-0068-7 ↗
16. 10.1021/jacs.0c1094310.1021/jacs.0c10943 ↗
17. 10.1039/C7EE01981E10.1039/C7EE01981E ↗
18. 10.1038/s41377-022-00872-y10.1038/s41377-022-00872-y ↗
19. 10.1021/acs.jpclett.2c0194510.1021/acs.jpclett.2c01945 ↗
20. 10.1021/acs.accounts.1c0062610.1021/acs.accounts.1c00626 ↗
21. 10.1038/s41467-022-30953-w10.1038/s41467-022-30953-w ↗
22. 10.1038/s41467-021-21721-310.1038/s41467-021-21721-3 ↗
23. 10.1126/sciadv.abb713210.1126/sciadv.abb7132 ↗
24. 10.1002/smtd.20200014910.1002/smtd.202000149 ↗
25. 10.1002/adma.20190184310.1002/adma.201901843 ↗
26. 10.1002/adma.20200297210.1002/adma.202002972 ↗
27. 10.1002/adfm.20210301210.1002/adfm.202103012 ↗
28. 10.1016/j.matt.2021.10.02010.1016/j.matt.2021.10.020 ↗
29. 10.1002/anie.20230941610.1002/anie.202309416 ↗
30. 10.1021/acsphotonics.8b0098410.1021/acsphotonics.8b00984 ↗
31. 10.1002/adma.20210232610.1002/adma.202102326 ↗
32. 10.1021/acs.chemmater.6b0080910.1021/acs.chemmater.6b00809 ↗
33. 10.1038/s41467-019-09057-510.1038/s41467-019-09057-5 ↗
34. 10.1126/sciadv.aay404510.1126/sciadv.aay4045 ↗
35. 10.1021/acsnano.7b0398410.1021/acsnano.7b03984 ↗
36. 10.1038/ncomms942010.1038/ncomms9420 ↗
37. 10.1002/adom.20200101610.1002/adom.202001016 ↗
38. 10.1021/acs.nanolett.2c0177110.1021/acs.nanolett.2c01771 ↗
39. 10.1126/sciadv.170179310.1126/sciadv.1701793 ↗
40. 10.1038/s41467-019-12445-610.1038/s41467-019-12445-6 ↗
41. 10.1021/acs.nanolett.2c0368910.1021/acs.nanolett.2c03689 ↗
42. 10.1126/sciadv.170070410.1126/sciadv.1700704 ↗
43. 10.1038/s41467-018-04212-w10.1038/s41467-018-04212-w ↗
44. 10.1103/PhysRevB.98.08510810.1103/PhysRevB.98.085108 ↗
45. 10.1063/5.002487110.1063/5.0024871 ↗
46. 10.1063/1.512745910.1063/1.5127459 ↗
47. 10.1038/s41565-020-0750-110.1038/s41565-020-0750-1 ↗
48. 10.1021/acs.jpclett.3c0223810.1021/acs.jpclett.3c02238 ↗
49. 10.1103/PhysRevB.94.24543410.1103/PhysRevB.94.245434 ↗
50. 10.1038/s41563-020-00865-510.1038/s41563-020-00865-5 ↗
51. 10.1038/nmat493610.1038/nmat4936 ↗
52. 10.34133/ultrafastscience.003010.34133/ultrafastscience.0030 ↗
53. 10.1103/PhysRevB.107.17430310.1103/PhysRevB.107.174303 ↗
54. 10.1021/acs.nanolett.2c0342710.1021/acs.nanolett.2c03427 ↗
55. 10.1103/PhysRev.183.73010.1103/PhysRev.183.730 ↗
56. 10.1016/0038-1098(92)90005-T10.1016/0038-1098(92)90005-T ↗
57. 10.1126/sciadv.170121710.1126/sciadv.1701217 ↗
58. 10.1103/PhysRevMaterials.6.09540110.1103/PhysRevMaterials.6.095401 ↗
59. 10.1021/acsenergylett.7b0086210.1021/acsenergylett.7b00862 ↗
60. 10.1021/acsenergylett.2c0194910.1021/acsenergylett.2c01949 ↗
61. 10.1002/adma.20220422710.1002/adma.202204227 ↗
62. 10.1103/PhysRevB.96.19520210.1103/PhysRevB.96.195202 ↗
63. 10.1038/s41467-020-16463-710.1038/s41467-020-16463-7 ↗
64. 10.1524/zkri.220.5.567.6507510.1524/zkri.220.5.567.65075 ↗
65. 10.1103/PhysRevLett.77.386510.1103/PhysRevLett.77.3865 ↗
66. 10.1103/PhysRevB.77.11512310.1103/PhysRevB.77.115123 ↗
67. 10.1063/1.156406010.1063/1.1564060 ↗