当前位置:首页>郑州>Nano Res.[合成]│郑州大学卢思宇、张保卫团队:一种强抗热猝灭红色荧光粉:Cs₂ZrCl₆:Sb³⁺

Nano Res.[合成]│郑州大学卢思宇、张保卫团队:一种强抗热猝灭红色荧光粉:Cs₂ZrCl₆:Sb³⁺

  • 2026-03-31 06:38:23
Nano Res.[合成]│郑州大学卢思宇、张保卫团队:一种强抗热猝灭红色荧光粉:Cs₂ZrCl₆:Sb³⁺

背景介绍

在城市总用电中,户外照明占比超过40%,而高功率荧光粉转换白色发光二极管(WLED)是户外照明的最佳节能器件。然而,功率越大,WLED工作时温度越高(可达200°C以上)。在高温下,非辐射跃迁会被激活,进而引发荧光粉的热猝灭。为保持高功率下WLED 的发光强度和色度,开发具有抗热猝灭特性的新型荧光粉显得尤为迫切。

成果简介

卢思宇、张保卫团队介绍了一种零维金属卤化物钙钛矿:Cs2ZrCl6:Sb3+,该材料在高达500 K的温度下仍能保持高效的红光发射,且表现出明显的“反热猝灭”特性。性能与主流反热猝灭荧光粉(如 K2SiF6:Mn4+)相当。其优异的反热猝灭性能源于异价掺杂引起的缺陷调控机制:Sb3+的异价掺杂诱导了主体的结构缺陷,在高温下,会加速缺陷向发光中心的能量转移,进而来补偿非辐射跃迁的发射损失。基于该材料组装的白光LED器件,在高达2000 mA的电流下仍能保持稳定的发光强度和色度。

图文导读

图 1. (a)Cs2ZrCl6:xSb3+(x = 0.5%、1.0%、2.1%、2.6%、3.3%、3.5%、4.6%)的粉末 XRD 图谱。Cs2ZrCl6(ICSD 编号 26695)标准XRD卡片作为对比。(b)在280-500K范围内,Cs2ZrCl6:xSb3+的变温光谱(375 nm激发)。(c)Cs2ZrCl6:xSb3+ 的归一化变温光谱(以300 K时的PL强度为1进行归一化)。(d)稳定性实验,包含Cs2ZrCl6:xSb3+ 从 300 K 到 500 K 的十次加热 - 冷却循环,分别在 300 K(黑色圆点)和 500 K(红色圆点)下测量 PL 强度(以300 K时的PL强度为1进行归一化)。(e)在一次加热 - 冷却循环中,Cs2ZrCl6:xSb3+ 从 298 K 到 523 K 的变温XRD。

图 2.(a)在280-500 K范围内,Cs2ZrCl6:3.3%Sb3+ 变温光谱,x的范围为0.5%至 4.6%,且PL强度以 300 K 时的PL强度为基准归一化。(b)Cs2ZrCl6:xSb3+不同掺杂浓度(x = 0.5%-4.6%)的热释光谱。(c)Cs2ZrCl6:3.3%Sb3+和 Cs2ZrCl6:5.1%Te4+ 在从 298 至 523 K 的一次加热 - 冷却循环中的XRD 峰位及其拟合斜率。(d)Cs2ZrCl6:3.3%Sb3+ 和 Cs2ZrCl6:5.1%Te4+ 的热释光光谱。(e)在375nm激发下,Cs2ZrCl6:3.3%Sb3+的发射过程以及能量补偿过程图。(f)在 375 nm 激发下,Cs2ZrCl6:5.1%Te4+的发射过程以及能量补偿过程图。

图 3.高工作电流下 WLED 的性能。(a)在50至2000毫安的高通量工作电流下,Cs2ZrCl6:xSb3+(红色线和三角形)、商业红色荧光粉 CaAlSiN3:Eu2+(橙色线和圆圈)、商业抗热猝灭荧光粉 K2SiF6:Mn4+(蓝色线和正方形)以及carbon dots(绿色线和五边形)分别涂覆在紫外LED芯片上的电致发光(EL)光谱。UV-LED 芯片的EL强度作为参考(灰色线和星号)。(b)在50至2000毫安电流范围内,Cs2ZrCl6:xSb3+作为红色荧光粉、Rb3InCl6:xSb3+作为绿色荧光粉的WLED的EL光谱。(c)在50至 2000 毫安电流范围内,Cs2ZrCl6:xSb3+(红色线和三角形)、商业红色荧光粉CaAlSiN3:Eu2+(橙色线和圆圈)、商业抗热猝灭荧光粉K2SiF6:Mn4+(蓝色线和正方形)以及carbon dots(绿色线和五边形)分别作为红色荧光粉、Rb3InCl6:xSb3+作为绿色荧光粉的WLED的归一化EL光谱。(d)Cs2ZrCl6:xSb3+-WLED与商用红色荧光粉CaAlSiN3:Eu2+-WLED(圆形)、商用抗热猝灭荧光粉 K2SiF6:Mn4+-WLED(正方形)以及carbon dots-WLED(五边形)的 CIE 坐标变化。(e)基于Cs2ZrCl6:xSb3+的WLED 在低电流(300 K,左)和高电流(450 K,右)时的工作照片,(f)基于商用红色荧光粉CaAlSiN3:Eu2+的WLED 在低电流(300 K,左)和高电流(450 K,右)时的工作照片。

作者简介

卢思宇,吉林大学本硕博,郑州大学教授,博士生导师,中原基础领军,主要从事碳点的可控制备及其在发光、催化等领域的功能研究。主持基金委区域联合重点,优秀青年,河南省卓越创新群体,面上,青年等项目;在Nat. Synth., J. Am. Chem. Soc., Adv. Mater., Angew. Chem. Int. Ed., Nat. Commun., 等学术期刊发表论文200余篇,被引用33103余次,H因子103。兼任 Chin. J. Chem.(中科院一区)副主编;Chinese Chem Lett编委以及Sci. Bull., Sci. China Chem.等期刊青年编委; 入选2022年度全球高被引科学家 (科睿唯安),2023年度中国高被引学者(爱思唯尔);担任碳点功能材料理事会理事和全国碳点功能材料会议共同主席。

张保卫,四川大学本硕,意大利技术研究院博士,郑州大学副教授,河南省高层次人才,河南省优青,Applied Surface Science客座编辑。研究工作主要集中在半导体纳米团簇、纳米晶体的制备,组装与光学应用。以第一作者或通讯作者在Nat. Commun., J. Am. Chem. Soc.(2), Angew (1), Nano Lett.(4), ACS Energy Lett.(2), ACS Nano, ACS Mater. Lett., Chem. Mater.(2)发表文章30余篇。

文章信息

Zhang H, Jia J, Zhang B, et al. A robust anti-thermal quenching red phosphors: Cs2ZrCl6:Sb3+. Nano Research, 2026, 19(3): 94908432. https://doi.org/10.26599/NR.2026.94908432.

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  1. CONNECT:[ UseTime:0.000473s ] mysql:host=127.0.0.1;port=3306;dbname=i460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000721s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001539s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000261s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000488s ]
  6. SELECT * FROM `set` [ RunTime:0.002005s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000604s ]
  8. SELECT * FROM `article` WHERE `id` = 501292 LIMIT 1 [ RunTime:0.000373s ]
  9. UPDATE `article` SET `lasttime` = 1775182166 WHERE `id` = 501292 [ RunTime:0.008624s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000269s ]
  11. SELECT * FROM `article` WHERE `id` < 501292 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000409s ]
  12. SELECT * FROM `article` WHERE `id` > 501292 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001089s ]
  13. SELECT * FROM `article` WHERE `id` < 501292 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000646s ]
  14. SELECT * FROM `article` WHERE `id` < 501292 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.006218s ]
  15. SELECT * FROM `article` WHERE `id` < 501292 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003882s ]
0.096937s