DataVXAdvanced MaterialsPaper
journal article·2023-02

A Multifunctional “Halide‐Equivalent” Anion Enabling Efficient CsPb(Br/I)3 Nanocrystals Pure‐Red Light‐Emitting Diodes with External Quantum Efficiency Exceeding 23%

Jibin Zhang, Tiankai Zhang, Zhuangzhuang Ma, Fanglong Yuan, Xin Zhou, Heyong Wang, Zhe Liu, Jian Qing, Hongting Chen, Xinjian Li, Shijian Su, Jianing Xie, Zhifeng Shi, Lintao Hou, Chongxin Shan

Advanced Materials· Volume 35· Issue 8
Publisher page
Source abstract

Abstract

Abstract Pure‐red perovskite LEDs (PeLEDs) based on CsPb(Br/I)3 nanocrystals (NCs) usually suffer from a compromise in emission efficiency and spectral stability on account of the surface halide vacancies‐induced nonradiative recombination loss, halide phase segregation, and self‐doping effect. Herein, a “halide‐equivalent” anion of benzenesulfonate (BS–) is introduced into CsPb(Br/I)3 NCs as multifunctional additive to simultaneously address the above challenging issues. Joint experiment‐theory characterizations reveal that the BS– can not only passivate the uncoordinated Pb2+‐related defects at the surface of NCs, but also increase the formation energy of halide vacancies. Moreover, because of the strong electron‐withdrawing property of sulfonate group, electrons are expected to transfer from the CsPb(Br/I)3 NC to BS– for reducing the self‐doping effect and altering the n‐type behavior of CsPb(Br/I)3 NCs to near ambipolarity. Eventually, synergistic boost in device performance is achieved for pure‐red PeLEDs with CIE coordinates of (0.70, 0.30) and a champion external quantum efficiency of 23.5%, which is one of the best value among the ever‐reported red PeLEDs approaching to the Rec. 2020 red primary color. Moreover, the BS–‐modified PeLED exhibits negligible wavelength shift under different operating voltages. This strategy paves an efficient way for improving the efficiency and stability of pure‐red PeLEDs.
Source: crossref · Quality: baseline

Research context

NanomaterialsElectronic materials

OpenAlex topics: Perovskite Materials and Applications · Optical properties and cooling technologies in crystalline materials · Organic Light-Emitting Diodes Research

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

Affiliations

Key Laboratory of Materials Physics of Ministry of Education School of Physics and Microelectronics Zhengzhou University Daxue Road 75 Zhengzhou 450052 China

Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Siyuan laboratory Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials Department of Physics Jinan University Guangzhou 510632 P. R. China

Department of Physics, Chemistry, and Biology (IFM) Linköping University Linköping SE‐58183 Sweden

Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education College of Chemistry Beijing Normal University Beijing 100875 China

Center for Nano Science and Technology @PoliMi Istituto Italiano di Tecnologia Milan 20133 Italy

State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and Devices South China University of Technology Guangzhou 510640 China

Guangdong‐Hong Kong‐Macao Joint Laboratory for Intelligent Micro‐Nano Optoelectronic Technology School of Physics and Optoelectronic Engineering Foshan University Foshan 528225 China

Funding

National Natural Science Foundation of China

References (66)

Show source-provided references
1. 10.1038/s41928-022-00745-710.1038/s41928-022-00745-7 ↗
2. 10.1126/science.aad181810.1126/science.aad1818 ↗
3. 10.1038/s41563-020-0784-710.1038/s41563-020-0784-7 ↗
4. 10.1038/s41566-020-00732-410.1038/s41566-020-00732-4 ↗
5. 10.1038/s41566-019-0390-x10.1038/s41566-019-0390-x ↗
6. 10.1038/s41586-018-0575-310.1038/s41586-018-0575-3 ↗
7. 10.1038/s41586-018-0576-210.1038/s41586-018-0576-2 ↗
8. 10.1002/adma.20200716910.1002/adma.202007169 ↗
9. 10.1126/science.aam709310.1126/science.aam7093 ↗
10. 10.1002/adma.20200136710.1002/adma.202001367 ↗
11. 10.1038/s41565-022-01113-410.1038/s41565-022-01113-4 ↗
12. 10.1021/acsenergylett.0c0186010.1021/acsenergylett.0c01860 ↗
13. 10.1021/acs.nanolett.0c0051310.1021/acs.nanolett.0c00513 ↗
14. 10.1038/s41566-018-0260-y10.1038/s41566-018-0260-y ↗
15. 10.1021/acsmaterialslett.2c0030210.1021/acsmaterialslett.2c00302 ↗
16. 10.1021/jacs.9b1171910.1021/jacs.9b11719 ↗
17. 10.1364/OE.23.02368010.1364/OE.23.023680 ↗
18. 10.1021/jacs.2c0463710.1021/jacs.2c04637 ↗
19. 10.1021/jacs.1c0214810.1021/jacs.1c02148 ↗
20. 10.1002/adfm.20211004810.1002/adfm.202110048 ↗
21. 10.1021/acsnano.9b1014810.1021/acsnano.9b10148 ↗
22. 10.1021/jacs.7b1064710.1021/jacs.7b10647 ↗
23. 10.1021/acs.jpcc.8b0696810.1021/acs.jpcc.8b06968 ↗
24. 10.1016/j.joule.2020.07.00310.1016/j.joule.2020.07.003 ↗
25. 10.1002/aenm.20210055510.1002/aenm.202100555 ↗
26. 10.1002/adom.20220018910.1002/adom.202200189 ↗
27. 10.1021/acscentsci.8b0038610.1021/acscentsci.8b00386 ↗
28. 10.1016/j.trechm.2019.04.01010.1016/j.trechm.2019.04.010 ↗
29. 10.1002/anie.20210236010.1002/anie.202102360 ↗
30. 10.1016/j.scib.2021.04.03310.1016/j.scib.2021.04.033 ↗
31. 10.1021/acsenergylett.9b0024710.1021/acsenergylett.9b00247 ↗
32. 10.1021/acsenergylett.7b0028210.1021/acsenergylett.7b00282 ↗
33. 10.1002/adma.20210810210.1002/adma.202108102 ↗
34. 10.1038/s41586-021-03217-810.1038/s41586-021-03217-8 ↗
35. 10.1002/adma.20220085410.1002/adma.202200854 ↗
36. 10.1021/acs.chemmater.7b0160910.1021/acs.chemmater.7b01609 ↗
37. 10.1038/s41467-019-09047-710.1038/s41467-019-09047-7 ↗
38. 10.1063/1.143211010.1063/1.1432110 ↗
39. 10.1021/acsnano.5b0629510.1021/acsnano.5b06295 ↗
40. 10.1002/anie.20210972410.1002/anie.202109724 ↗
41. 10.1002/adma.20220509210.1002/adma.202205092 ↗
42. 10.1002/advs.20220240810.1002/advs.202202408 ↗
43. 10.1021/nl504877910.1021/nl5048779 ↗
44. 10.1021/acsenergylett.1c0081210.1021/acsenergylett.1c00812 ↗
45. 10.1021/acsenergylett.8b0067210.1021/acsenergylett.8b00672 ↗
46. 10.1016/j.joule.2017.07.01710.1016/j.joule.2017.07.017 ↗
47. 10.1002/adfm.20211157810.1002/adfm.202111578 ↗
48. 10.1002/adma.20200557010.1002/adma.202005570 ↗
49. 10.1002/adma.20200882010.1002/adma.202008820 ↗
50. 10.1002/adma.20190171610.1002/adma.201901716 ↗
51. 10.1016/j.nanoen.2019.05.02710.1016/j.nanoen.2019.05.027 ↗
52. 10.1002/smll.20200106210.1002/smll.202001062 ↗
53. 10.1002/adma.20180051510.1002/adma.201800515 ↗
54. 10.1038/s41467-018-04028-810.1038/s41467-018-04028-8 ↗
55. 10.1021/acsenergylett.8b0247810.1021/acsenergylett.8b02478 ↗
56. 10.1021/acsnano.8b0358610.1021/acsnano.8b03586 ↗
57. 10.1002/adma.20130160310.1002/adma.201301603 ↗
58. 10.1038/s41566-018-0283-410.1038/s41566-018-0283-4 ↗
59. 10.1002/adom.20180066710.1002/adom.201800667 ↗
60. 10.1002/advs.20210221310.1002/advs.202102213 ↗
61. 10.1021/acsenergylett.0c0009310.1021/acsenergylett.0c00093 ↗
62. 10.1063/1.509927710.1063/1.5099277 ↗
63. 10.1103/PhysRevB.69.20130610.1103/PhysRevB.69.201306 ↗
64. 10.1103/PhysRevLett.77.386510.1103/PhysRevLett.77.3865 ↗
65. 10.1103/PhysRevB.59.175810.1103/PhysRevB.59.1758 ↗
66. 10.1103/PhysRevB.13.518810.1103/PhysRevB.13.5188 ↗