Ultralow voltage–driven efficient and stable perovskite light-emitting diodes
The poor operational stability of perovskite light-emitting diodes (PeLEDs) remains a major obstacle to their commercial application. Achieving high brightness and quantum efficiency at low driving voltages, thus effectively reducing heat accumulation, is key to enhancing the operational lifetime of PeLEDs. Here, we present a breakthrough, attaining a record-low driving voltage while maintaining high brightness and efficiency. By thoroughly suppressing interface recombination and ensuring excellent charge transport, our PeLEDs, with an emission peak at 515 nanometers, achieve a maximum brightness of 90,295 candelas per square meter and a peak external quantum efficiency of 27.8% with an ultralow turn-on voltage of 1.7 volts (~70% bandgap voltage). Notably, Joule heat is nearly negligible at these low driving voltages, substantially extending the operational lifetime to 7691.1 hours. Our optimized strategies effectively tackle stability issue through thermal management, paving the way for highly stable PeLEDs.
Authors
- Naizhong Jiang
- Fanglong Yuan (ORCID: https://orcid.org/0000-0003-4619-275X)
- Tianmin Wu (ORCID: https://orcid.org/0000-0002-6129-1126)
- Ruidan Zhang (ORCID: https://orcid.org/0000-0002-9582-1869)
- Lingwei Zeng (ORCID: https://orcid.org/0000-0001-6367-4799)
- Daqin Chen (ORCID: https://orcid.org/0000-0003-0725-273X)
- Tao Pang (ORCID: https://orcid.org/0000-0002-1747-972X)
- Zhibin Wang (ORCID: https://orcid.org/0000-0001-8156-6409)
- Chenhao Li (ORCID: https://orcid.org/0000-0003-1182-6804)
- Lei Lei (ORCID: https://orcid.org/0000-0002-9033-8544)
- Qian Teng
- Feng Huang (ORCID: https://orcid.org/0000-0002-3945-9295)
- Ximing Wu (ORCID: https://orcid.org/0000-0002-7110-059X)
- Hailiang Huang
- Song Zheng
- Jinsui Li
- Dan Li
- Jinyang Li (ORCID: https://orcid.org/0000-0001-7003-2153)
Institutions
- Fujian Normal University (CN)
- Hunan University of Science and Technology (CN)
- Beijing Normal University (CN)
- Huzhou Normal University (CN)
- China Jiliang University (CN)
Publication Details
- Journal
- Science Advances
- Published
- 2024-09-06
- DOI
- https://doi.org/10.1126/sciadv.adp8473
- Citations
- 73
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 15.23
Funders
- National Natural Science Foundation of China