DataVXAdvanced Optical MaterialsPaper
journal article·2025-04Open access

Hydrazide Molecular Configuration Induced Phase Regulation and Defect Passivation Enable Efficient Quasi‐2D Blue Perovskite Light‐Emitting Diodes

Shuyan Fang, Chao Shen, Zhi Tan, Chenhui Su, Junquan Luo, Siqi Wu, Jian Qing, Yunhan Luo, Renqiang Yang, Jibin Zhang, Ziyang Hu, Jihai Liao, Lintao Hou

Advanced Optical Materials· Volume 13· Issue 10
Publisher pageOpen full text
Source abstract

Abstract

Abstract Perovskite light‐emitting diodes (PeLEDs) have demonstrated significant potential in the display sector, attributed to their wide color gamut, narrow emission spectra, and cost‐effectiveness. Despite the rapid advancements in red and green PeLEDs, the attainment of high brightness and high external quantum efficiency (EQE) for blue PeLEDs remains a considerable challenge, which substantially limits their practical applications in white lighting and optical communication. In this study, a method for the passivation of blue quasi‐2D perovskites using hydrazide derivatives with varying alkyl chain lengths is presented. Density functional theory analysis indicates that hydrazide derivatives can effectively adsorb onto halogen vacancies, thereby reducing charge trapping states associated with undercoordinated Pb 2+ . Experimental results demonstrate that the optimal hydrazide derivative can better eliminate non‐radiative recombination loss, suppress ions migration, and regulate phase distribution, facilitating smoother energy transfer. Through this approach, stable sky‐blue PeLEDs are achieved with an EQE of 14.5% and a maximum luminance of 2659 cd m −2 . This work offers a systematic understanding of hydrazide additive design, which will further enhance the performance and stability of blue quasi‐2D PeLEDs.
Source: crossref · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Organic Light-Emitting Diodes Research · Conducting polymers and applications

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

Affiliations

Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials College of Physics and Optical Engineering Jinan University Guangzhou 510632 China

Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications College of Physics and Optical Engineering Jinan University Guangzhou 510632 China

Key Laboratory of Optoelectronic Chemical Materials and Devices (Ministry of Education) School of Optoelectronic Materials and Technology Jianghan University Wuhan 430056 China

Key Laboratory of Materials Physics of Ministry of Education School of Physics Zhengzhou University Zhengzhou 450001 China

Department of Microelectronic Science and Engineering Ningbo Collaborative Innovation Center of Nonlinear Calamity System of Ocean and Atmosphere Ningbo University Ningbo 315211 China

Department of Physics South China University of Technology Guangzhou 510640 China

Funding

National Natural Science Foundation of China · Jianghan University · China Postdoctoral Science Foundation

References (47)

Show source-provided references
1. 10.1002/adma.20150256710.1002/adma.201502567 ↗
2. 10.1002/adfm.20160010910.1002/adfm.201600109 ↗
3. 10.1002/adma.20160388510.1002/adma.201603885 ↗
4. 10.1038/s41467-020-17633-310.1038/s41467-020-17633-3 ↗
5. 10.1038/s41586-023-05792-410.1038/s41586-023-05792-4 ↗
6. 10.1038/s41467-021-25093-610.1038/s41467-021-25093-6 ↗
7. 10.1038/s41467-020-20433-410.1038/s41467-020-20433-4 ↗
8. 10.1038/s41928-024-01151-x10.1038/s41928-024-01151-x ↗
9. 10.1038/s41566-023-01177-110.1038/s41566-023-01177-1 ↗
10. 10.1038/nnano.2014.14910.1038/nnano.2014.149 ↗
11. 10.1002/adma.20220446010.1002/adma.202204460 ↗
12. 10.1002/adfm.20230814710.1002/adfm.202308147 ↗
13. 10.1016/j.cej.2024.15072610.1016/j.cej.2024.150726 ↗
14. 10.1002/adma.20230228310.1002/adma.202302283 ↗
15. 10.1002/anie.20230218410.1002/anie.202302184 ↗
16. 10.1002/adfm.20230657010.1002/adfm.202306570 ↗
17. Shen C. · Adv. Photonics · 2024 · 6
18. 10.1002/adfm.20230342310.1002/adfm.202303423 ↗
19. 10.1038/s41377-023-01206-210.1038/s41377-023-01206-2 ↗
20. 10.1021/acs.nanolett.3c0426710.1021/acs.nanolett.3c04267 ↗
21. 10.1002/adma.20230271110.1002/adma.202302711 ↗
22. 10.1002/adfm.20230142510.1002/adfm.202301425 ↗
23. 10.1002/adfm.20211004810.1002/adfm.202110048 ↗
24. 10.1007/s40820-021-00688-210.1007/s40820-021-00688-2 ↗
25. 10.1002/smll.20220463810.1002/smll.202204638 ↗
26. 10.1002/adma.20230393810.1002/adma.202303938 ↗
27. 10.1002/anie.20220501210.1002/anie.202205012 ↗
28. 10.1126/science.abi632310.1126/science.abi6323 ↗
29. 10.1002/adma.20230205910.1002/adma.202302059 ↗
30. 10.1002/adfm.20230781810.1002/adfm.202307818 ↗
31. 10.1016/j.scib.2024.05.02810.1016/j.scib.2024.05.028 ↗
32. 10.1021/jacs.2c0717210.1021/jacs.2c07172 ↗
33. 10.1016/j.matt.2020.11.01110.1016/j.matt.2020.11.011 ↗
34. 10.1021/acsnano.3c1213110.1021/acsnano.3c12131 ↗
35. 10.1016/j.nanoen.2023.10914410.1016/j.nanoen.2023.109144 ↗
36. 10.1038/s41928-023-00955-710.1038/s41928-023-00955-7 ↗
37. 10.1038/s41467-020-17943-610.1038/s41467-020-17943-6 ↗
38. 10.1021/acsphotonics.8b0143510.1021/acsphotonics.8b01435 ↗
39. 10.1002/adma.20170709310.1002/adma.201707093 ↗
40. 10.1038/nphoton.2016.26910.1038/nphoton.2016.269 ↗
41. 10.1002/adma.20220807810.1002/adma.202208078 ↗
42. 10.1002/adfm.20190975410.1002/adfm.201909754 ↗
43. 10.1002/adma.20220509210.1002/adma.202205092 ↗
44. 10.1038/s41467-019-09794-710.1038/s41467-019-09794-7 ↗
45. 10.1016/j.cej.2023.14129210.1016/j.cej.2023.141292 ↗
46. 10.1038/s41566-019-0505-410.1038/s41566-019-0505-4 ↗
47. 10.1039/D0TC05669C10.1039/D0TC05669C ↗