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郑州大学史志锋 & 北京师范大学袁方龙团队:基于准二维钙钛矿纳米晶的高性能红光发光二极管

  • 2026-05-10 10:59:43
郑州大学史志锋 & 北京师范大学袁方龙团队:基于准二维钙钛矿纳米晶的高性能红光发光二极管
【引言】

金属卤化物钙钛矿发光二极管为低成本全彩显示器提供了一个有前景的平台，但实现高性能的纯红光发射仍然具有挑战性。

郑州大学史志锋 & 北京师范大学袁方龙等人报道了一种使用多功能分子4-(三氟甲基)苯磺酰胺对混合溴/碘准二维钙钛矿进行结晶调控的策略，该分子同时与有机间隔阳离子、Pb²⁺离子和卤素离子配位。此外，前驱体溶液中大空间位阻与有序分子组装的结合在引导纳米晶形成方面起着决定性作用，从而抑制了缺陷形成，抑制了卤素离子迁移，并增强了激子结合能。由此产生的发光二极管在约635 nm处表现出纯红光发射，峰值外量子效率达到30.2%，最大亮度超过25,000 cd m⁻²，半衰期为8426分钟。实现性能与量子点或有机发光二极管相当的钙钛矿发光二极管将标志着商业化进程中的一个重要里程碑。这项工作将扩展传统发光二极管技术之外的机会。

【结果】

【原文PDF】

s41467-026-72733-w_reference.pdf

【原文链接】

Zhang, J., Liu, T., Gu, Q. et al. High-performance red light-emitting diodes from quasi-two-dimensional perovskite nanocrystals. 
Nat Commun (2026). 
https://doi.org/10.1038/s41467-026-72733-w
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  140. /yingpanguazai/ssd/ssd1/www/i.460.net.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000547s ] mysql:host=127.0.0.1;port=3306;dbname=i460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000827s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.011687s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.002716s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000642s ]
  6. SELECT * FROM `set` [ RunTime:0.003591s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000672s ]
  8. SELECT * FROM `article` WHERE `id` = 535044 LIMIT 1 [ RunTime:0.018091s ]
  9. UPDATE `article` SET `lasttime` = 1778701770 WHERE `id` = 535044 [ RunTime:0.012018s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.022185s ]
  11. SELECT * FROM `article` WHERE `id` < 535044 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.013796s ]
  12. SELECT * FROM `article` WHERE `id` > 535044 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.019822s ]
  13. SELECT * FROM `article` WHERE `id` < 535044 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.212982s ]
  14. SELECT * FROM `article` WHERE `id` < 535044 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.125790s ]
  15. SELECT * FROM `article` WHERE `id` < 535044 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.286647s ]
0.810789s