Photonic band characterization in InGaN/GaN nanocolumn arrays with triangular and honeycomb lattices by angle-resolved micro-photoluminescence measurements
Photonic band characterization in InGaN/GaN nanocolumn arrays with triangular and honeycomb lattices by angle-resolved micro-photoluminescence measurements
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DOI：
10.35848/1347-4065/abfeaa
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发表时间：
2021
影响因子：
1.5
通讯作者：
T. Oto;Masato Okamura;Yuzo Matsui;Kai Motoyama;S. Ishizawa;R. Togashi;K. Kishino
中科院分区：
文献类型：
--
作者：
T. Oto;Masato Okamura;Yuzo Matsui;Kai Motoyama;S. Ishizawa;R. Togashi;K. Kishino
我们展示了光子晶体（PhCs）的光子带特性的InGaN/GaN纳米柱（NC）阵列的基础上制作的Ti掩模选择性区域生长。成功地制备了直径和最近距离大致相同的三角形和蜂窝网格状纳米碳。为了有效地观察光子带，我们设计了一个角度分辨的显微光致发光测量系统。蜂窝晶格中的光子带与三角晶格中的光子带相比在更长的波长处，这表明对于蜂窝晶格，更窄的NC可用于在长波长区域实现PhC效应。因此，具有大纳米晶和PhC效应的窄蜂窝晶格适合于长波长发射。
We demonstrated photonic band characterization in photonic crystals (PhCs) based on InGaN/GaN nanocolumn (NC) arrays fabricated by Ti-mask selective area growth. Triangular and honeycomb latticed NCs with approximately the same diameter and closest distance were successfully fabricated. To effectively observe the photonic bands, we designed an angle-resolved micro-photoluminescence measurement system. The photonic bands in the honeycomb lattice were at longer wavelengths compared with those in the triangular lattice, indicating that, for the honeycomb lattice, narrower NCs were available to realize PhC effects in the long-wavelength region. Therefore, narrow honeycomb lattices with large nanocrystalline and PhC effects are suitable for long-wavelength emission.