Enhanced Photoluminescence from Organic Dyes Coupled to Periodic Array of Zirconium Nitride Nanoparticles,ACS Photonics

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Enhanced Photoluminescence from Organic Dyes Coupled to Periodic Array of Zirconium Nitride Nanoparticles
ACS Photonics ( IF 6.5 ) Pub Date : 2018-06-14 00:00:00 , DOI: 10.1021/acsphotonics.8b00320
Ryosuke Kamakura ₁ , Shunsuke Murai _{1,

2} , Koji Fujita ₁ , Katsuhisa Tanaka ₁

Affiliation

Noble metals, particularly gold, have been conventionally used for their suitable optical properties in the field of plasmonics. However, gold has a relatively low melting temperature, especially when nanosized, and the abundance of gold in the earth’s crust is low. These material-related limitations hinder the exploration of the use of plasmonics in several application areas. Transition metal nitrides are promising material alternatives because of their high mechanical and thermal stabilities, in addition to their acceptable plasmonic properties in the visible spectral region. Zirconium nitride (ZrN) is one such promising alternative owing to a higher carrier density than that of titanium nitride (TiN), which has been the most studied complementary material to gold. In this study, we have fabricated periodic arrays of ZrN nanoparticles and found that the ZrN array enhances the photoluminescence from an organic dye on the array; the photoluminescence intensity is increased by as much as 9.7× in the visible region. This result experimentally verifies that ZrN is useful as an alternative material to gold, to further develop plasmonics, and mitigate the conventional material-related limitations.

中文翻译：

有机染料与氮化锆纳米粒子周期阵列耦合的增强的光致发光

贵金属，特别是金，由于其在等离子体技术领域中的合适的光学性能，已被常规地使用。但是，金具有相对较低的熔化温度，尤其是在纳米级的情况下，地壳中金的含量较低。这些与材料有关的局限性阻碍了在多个应用领域中对等离激子的使用的探索。过渡金属氮化物除了具有在可见光谱范围内可接受的等离子体性能外，还具有较高的机械和热稳定性，因此是有前途的材料替代品。氮化锆（ZrN）就是这样一种有前途的替代品，因为它的载流子密度比氮化钛（TiN）高，而氮化钛（TiN）是金研究最多的补充材料。在这项研究中，我们制备了ZrN纳米粒子的周期性阵列，发现ZrN阵列增强了阵列上有机染料的光致发光。在可见光区域，光致发光强度增加了9.7倍。该结果通过实验验证了ZrN可以用作金的替代材料，以进一步开发等离子体激元，并减轻常规材料相关的局限性。

更新日期：2018-06-14

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