Excited-State Energy Manipulation Enables Single-Layer White Light-Emitting Diodes to Simulate the Solar Spectrum
White light-emitting diodes (WLEDs) have been widely researched and applied for their characteristics of energy savings and environmentally friendliness. However, the spectrum of WLEDs is quite different from that of natural sunlight, and long-term use can have an impact on both physiological and psychological health. Three strategies have been designed to address the issue of spectral defects by revealing the exciton energy transfer and distribution behavior between multiple excited states. Here, single emitting layer (SEL)-WLEDs are designed to simulate the solar spectrum, which exhibits excellent spectral stability at different operating voltages, demonstrating that exciton distribution can maintain dynamic balance. In addition, these devices can accurately replicate sunlight during different time periods, with a high color rendering index (CRI ∼ 90) and a nearly 90% coverage in the human comfort region. Meanwhile, the ultraviolet, deep blue, and near-infrared regions were reduced by 100%, 80%, and 90%, respectively. These results indicate that the strategies are expected to be used to promote the physical and mental health of those who work in environments far from natural light for a long time.
Authors
- Jian‐Yun Nie (ORCID: https://orcid.org/0000-0003-1556-3335)
- Chiyu Guo
- Ruifeng Lu (ORCID: https://orcid.org/0000-0002-1752-2070)
- Feng‐Ming Xie (ORCID: https://orcid.org/0000-0001-7988-3755)
- Hengyang Xiang (ORCID: https://orcid.org/0000-0001-5614-9275)
- Zhuoying Chen (ORCID: https://orcid.org/0000-0002-2535-5962)
- Jianxin Tang (ORCID: https://orcid.org/0000-0002-6813-0448)
- Chenghao Bi (ORCID: https://orcid.org/0000-0002-6074-1412)
- Haibo Zeng (ORCID: https://orcid.org/0000-0002-0281-3617)
- Kai Zhang (ORCID: https://orcid.org/0000-0002-6165-701X)
- Run Wang (ORCID: https://orcid.org/0000-0001-8915-656X)
- Yong‐Xin Guo (ORCID: https://orcid.org/0000-0001-8842-5609)
- Xinrui Chen (ORCID: https://orcid.org/0009-0009-9477-7454)
- Yifei Wang (ORCID: https://orcid.org/0000-0002-9634-4574)
Institutions
- Macau University of Science and Technology (MO)
- Centre National de la Recherche Scientifique (FR)
- Harbin Engineering University (CN)
- Université Paris Sciences et Lettres (FR)
- Nanjing University of Science and Technology (CN)
- Soochow University (CN)
- Sorbonne Université (FR)
- Laboratoire de Physique et d’Étude des Matériaux (FR)
- Institute of Molecular Functional Materials (CN)
- Qingdao Center of Resource Chemistry and New Materials (CN)
- Macao Polytechnic University (MO)
- Ministry of Industry and Information Technology (CN)
- ESPCI Paris (FR)
Publication Details
- Journal
- ACS Applied Materials & Interfaces
- Published
- 2025-04-29
- DOI
- https://doi.org/10.1021/acsami.5c02806
- Citations
- 3
- Primary Topic
- Organic Light-Emitting Diodes Research
- Type
- article
- Field-Weighted Citation Impact
- 2.19
Funders
- National Natural Science Foundation of China
- National Key Research and Development Program of China