Jiangxi University of Science and Technology Develops High-Performance Antimony-Based Perovskite Luminescent Materials

Against the backdrop of an era driven by both energy conservation, environmental protection, and technological innovation, the R&D of LED headlight materials has become a competitive high ground in the global lighting industry. Recently, the "Brilliant Optical Materials" team from Jiangxi University of Science and Technology has successfully developed high-performance antimony-based perovskite luminescent materials, injecting strong momentum into the innovation of headlight technology. This achievement not only resolves long-standing technical challenges in the industry but also opens up new pathways for the development of the green lighting industry.

Although LED headlights are renowned for their energy efficiency, issues such as severe light decay and low visibility in rainy or foggy conditions have consistently hindered the improvement of their performance. Facing these challenges, the team, led by its head Junwen Deng, adopted a problem-oriented approach and achieved two key technological breakthroughs through repeated exploration.

It is understood that the team employed a diethylenetriamine-mediated perovskite preparation technique, utilizing diethylenetriamine to encapsulate metal ions, forming an organic coating on their surface. Leveraging its strong coordination ability, it forms a rigid chelation structure with uncoordinated Sb³⁺, protecting it from erosion by water and oxygen in the air. Traditional LED headlights experience a light decay rate as high as 15% during use, severely affecting their service life and lighting performance. The team innovatively used diethylenetriamine as a mediator to optimize the crystal structure of the perovskite material, reducing the light decay rate to below 5% and significantly enhancing the material's stability. To address the issue of insufficient light penetration in rainy or foggy conditions, the team employed antimony doping technology to increase the material's photoluminescence quantum yield to 99.92%. Test data indicate that the rain and fog penetration distance of the new material has increased by 130%, and it achieves 100% lead-free composition, fully meeting the requirements for green and environmentally friendly manufacturing. These two technological breakthroughs not only resolve industry pain points but also elevate the performance of LED headlights to a new level, providing strong safeguards for drivers' safety in adverse weather conditions.

Throughout the R&D process, the team has always emphasized close collaboration with the industry, establishing in-depth partnerships with enterprises such as Jiangxi Lvye Automotive Lighting Co., Ltd.

With the continuous improvement of technology and the acceleration of the industrialisation process, new-type antimony-based perovskite luminescent materials are expected to be widely applied in automotive lighting, urban lighting, smart homes, and other fields, driving the lighting industry towards greater efficiency and environmental protection.