Interface Anchored Effect on Improving Working Stability of Deep Ultraviolet Light-Emitting Diode Using Graphene Oxide-Based Fluoropolymer Encapsulant
Interface Anchored Effect on Improving Working Stability of Deep Ultraviolet Light-Emitting Diode Using Graphene Oxide-Based Fluoropolymer Encapsulant
复制标题
氧化石墨烯基含氟聚合物封装材料提高深紫外发光二极管工作稳定性的界面锚定效应
DOI：
10.1021/acsami.7b17668
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发表时间：
2018
影响因子：
9.5
通讯作者：
Chen Changqing
中科院分区：
文献类型：
--
作者：
Liang Renli;Dai Jiangnan;Xu Linlin;Zhang Yi;He Ju;Wang Shuai;Chen Jingwen;Peng Yang;Ye Lei;Kuo Hao chung;Chen Changqing
基于氧化石墨烯（GO）的含氟聚合物首次被提出作为界面封装剂，以提高深紫外发光二极管（duv - led）的光提取效率，并实现其超长工作稳定性，受益于其基于锚定效应的优越界面性能。对于氧化石墨烯基含氟聚合物复合材料，设计锚定结构，利用嵌在含氟聚合物中的氧化石墨烯与接枝在表面的3-氨基丙基三乙氧基硅烷之间的界面反应，将石英透镜有效、紧密地铆接在DUV-LED芯片上。实验结果表明，在界面锚定效应的基础上，利用0.10 wt %氧化石墨烯基含氟聚合物的密封特性，DUV-LED界面层的空隙减少了84%，光输出功率提高了15%，结温降低了5%。此外，稳定工作时间显著提高了660%，这要归功于0.10 wt %氧化石墨烯基含氟聚合物良好的界面锚定键合。这种新型的氧化石墨烯基含氟聚合物被认为是一种可行且有效的界面封装剂，可以提高duv - led的性能。
The graphene oxide (GO)-based fluoropolymer is first proposed as an interface encapsulant to improve the light extraction efficiency and achieve the ultralong working stability of deep ultraviolet light-emitting diodes (DUV-LEDs), benefitting from its superior interface performance based on an anchored effect. For the GO-based fluoropolymer composite, the anchored structure is designed to effectively and tightly rivet the quartz lens on the DUV-LED chip by using the interface reaction between GO embedded in fluoropolymer and 3-aminopropyltriethoxy-silane grafted on the surfaces. Experimental results show that on the basis of the interface anchored effect, the air voids in the interface layer of DUV-LED are reduced by 84%, leading to an improvement of the light output power by 15% and a decrease of the junction temperature by 5%, by virtue of the sealing characteristics of the 0.10 wt % GO-based fluoropolymer. In addition, the steady working time is dramatically improved by 660% and it was attributed to the good interface anchored bonding of the 0.10 wt % GO-based fluoropolymer. This novel graphene oxide-based fluoropolymer is believed to provide a feasible and effective interface encapsulant to improve the performance of DUV-LEDs.