Enhanced Red Emission of Eu,O-Codoped GaN Embedded in a Photonic Crystal Nanocavity with Hexagonal Air Holes
Enhanced Red Emission of Eu,O-Codoped GaN Embedded in a Photonic Crystal Nanocavity with Hexagonal Air Holes
复制标题
嵌入具有六角形气孔的光子晶体纳米腔中的 Eu,O-共掺杂 GaN 的增强红光发射
DOI：
10.1103/physrevapplied.15.034086
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发表时间：
2021
影响因子：
4.6
通讯作者：
Yasufumi Fujiwara
中科院分区：
文献类型：
--
作者：
Shuhei Ichikawa;Yutaka Sasaki;Takenori Iwaya;Masato Murakami;Masaaki Ashida;Dolf Timmerman;Jun Tatebayashi;Yasufumi Fujiwara
在这项工作中，我们使用简化的牺牲层选择性湿法蚀刻，制造了一种氮化物基光子晶体（PhC）纳米腔，该纳米腔具有嵌入式有源层，用于未探索的红色区域。 Eu,O-共掺杂(:,)嵌入具有六边形孔的L7型二维PhC (2D-PhC)纳米腔中。室温光致发光 (PL) 显示在 620 nm 左右波长处与腔模耦合的发射。 L7 纳米腔中基本模式的品质因数为 5400，与最先进的具有嵌入蓝色和紫外区域氮化物基有源层的 2D-PhC 纳米腔的品质因数相当。我们表明，由于 2D-PhC 纳米腔的小模式体积和增强的光提取而产生的 Purcell 效应导致每单位面积的集成 PL 强度相对于典型发射增加了 54 倍。
In this work, we fabricate a nitride-based photonic crystal (PhC) nanocavity with an embedded active layer for unexplored red regions using simplified selective wet etching of ansacrificial layer. Eu,O-codoped(:,) is embedded in L7-type two-dimensional-PhC (2D-PhC) nanocavities with hexagonal holes. Room-temperature photoluminescence (PL) showsemission coupled to the cavity modes at wavelengths around 620 nm. The quality factor of the fundamental mode in an L7 nanocavity is 5400, which is comparable to those of state-of-the-art 2D-PhC nanocavities with embedded nitride-based active layers for the blue and ultraviolet regions. We show that the Purcell effect due to the small mode volumes of the 2D-PhC nanocavities and enhanced light extraction lead to a 54-fold increase in the integrated PL intensity per unit area with respect to the typical:,emission.