Enhanced red emission in perovskite light-emitting diodes via F-PEI additive
Mixed halogen perovskite materials show good application potential in the field of light-emitting diodes. However, due to non-radiative recombination of defect states in perovskite films, the external quantum efficiency (EQE) and stability of perovskite light-emitting diodes (PeLEDs) still lag behin...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2024-12-01
|
| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0243719 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846093449584967680 |
|---|---|
| author | Yan Wen Yi Shao Xuanxuan Guan Jihua Cao |
| author_facet | Yan Wen Yi Shao Xuanxuan Guan Jihua Cao |
| author_sort | Yan Wen |
| collection | DOAJ |
| description | Mixed halogen perovskite materials show good application potential in the field of light-emitting diodes. However, due to non-radiative recombination of defect states in perovskite films, the external quantum efficiency (EQE) and stability of perovskite light-emitting diodes (PeLEDs) still lag behind traditional LEDs. Herein, we modulated the perovskite crystallization process by adding fluorinated polyethylenimine (F-PEI) into the perovskite precursor solution, resulting in perovskite films with smaller grain sizes, smoother surfaces, and lower defect density. These improvements significantly improve the photoluminescence efficiency of perovskite films and the performance of corresponding diode devices, with the peak EQE of PeLEDs reaching 20.89% at 668 nm. In addition, the F-PEI additive improves the thermal stability of the device and extends the operating life of the device. This shows the potential of this additive to improve the performance of perovskite light-emitting diodes. |
| format | Article |
| id | doaj-art-7f37f23ba606468c863d128a1530ce61 |
| institution | Kabale University |
| issn | 2158-3226 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-7f37f23ba606468c863d128a1530ce612025-01-02T17:23:44ZengAIP Publishing LLCAIP Advances2158-32262024-12-011412125117125117-610.1063/5.0243719Enhanced red emission in perovskite light-emitting diodes via F-PEI additiveYan Wen0Yi Shao1Xuanxuan Guan2Jihua Cao3Suzhou University, Suzhou 234000, ChinaSuzhou University, Suzhou 234000, ChinaSuzhou University, Suzhou 234000, ChinaSuzhou University, Suzhou 234000, ChinaMixed halogen perovskite materials show good application potential in the field of light-emitting diodes. However, due to non-radiative recombination of defect states in perovskite films, the external quantum efficiency (EQE) and stability of perovskite light-emitting diodes (PeLEDs) still lag behind traditional LEDs. Herein, we modulated the perovskite crystallization process by adding fluorinated polyethylenimine (F-PEI) into the perovskite precursor solution, resulting in perovskite films with smaller grain sizes, smoother surfaces, and lower defect density. These improvements significantly improve the photoluminescence efficiency of perovskite films and the performance of corresponding diode devices, with the peak EQE of PeLEDs reaching 20.89% at 668 nm. In addition, the F-PEI additive improves the thermal stability of the device and extends the operating life of the device. This shows the potential of this additive to improve the performance of perovskite light-emitting diodes.http://dx.doi.org/10.1063/5.0243719 |
| spellingShingle | Yan Wen Yi Shao Xuanxuan Guan Jihua Cao Enhanced red emission in perovskite light-emitting diodes via F-PEI additive AIP Advances |
| title | Enhanced red emission in perovskite light-emitting diodes via F-PEI additive |
| title_full | Enhanced red emission in perovskite light-emitting diodes via F-PEI additive |
| title_fullStr | Enhanced red emission in perovskite light-emitting diodes via F-PEI additive |
| title_full_unstemmed | Enhanced red emission in perovskite light-emitting diodes via F-PEI additive |
| title_short | Enhanced red emission in perovskite light-emitting diodes via F-PEI additive |
| title_sort | enhanced red emission in perovskite light emitting diodes via f pei additive |
| url | http://dx.doi.org/10.1063/5.0243719 |
| work_keys_str_mv | AT yanwen enhancedredemissioninperovskitelightemittingdiodesviafpeiadditive AT yishao enhancedredemissioninperovskitelightemittingdiodesviafpeiadditive AT xuanxuanguan enhancedredemissioninperovskitelightemittingdiodesviafpeiadditive AT jihuacao enhancedredemissioninperovskitelightemittingdiodesviafpeiadditive |