Fabrication of wafer-scale nanoporous AlGaN-based deep ultraviolet distributed Bragg reflectors via one-step selective wet etching.
Fabrication of wafer-scale nanoporous AlGaN-based deep ultraviolet distributed Bragg reflectors via one-step selective wet etching.
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通过单步选择性湿蚀刻的晶片尺度纳米孔基于Algan的深层紫外线反射器的制造。
DOI:
10.1038/s41598-022-25712-2
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发表时间:
2022-12-27
影响因子:
4.6
通讯作者:
Dai J
中科院分区:
文献类型:
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作者:
Zhao Y;Shan M;Zheng Z;Jian P;Liu W;Tan S;Chen C;Wu F;Dai J
In this paper, we reported on wafer-scale nanoporous (NP) AlGaN-based deep ultraviolet (DUV) distributed Bragg reflectors (DBRs) with 95% reflectivity at 280 nm, using epitaxial periodically stacked n-Al0.62Ga0.38N/u-Al0.62Ga0.38N structures grown on AlN/sapphire templates via metal–organic chemical vapor deposition (MOCVD). The DBRs were fabricated by a simple one-step selective wet etching in heated KOH aqueous solution. To study the influence of the temperature of KOH electrolyte on the nanopores formation, the amount of charge consumed during etching process was counted, and the surface and cross-sectional morphology of DBRs were characterized by Scanning electron microscopy (SEM) and atomic force microscopy (AFM). As the electrolyte temperature increased, the nanopores became larger while the amount of charge reduced, which revealed that the etching process was a combination of electrochemical and chemical etching. The triangular nanopores and hexagonal pits further confirmed the chemical etching processes. Our work demonstrated a simple wet etching to fabricate high reflective DBRs, which would be useful for AlGaN based DUV devices with microcavity structures.
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影响因子:
4
作者:
Detchprohm, Theeradetch;Liu, Yuh-Shiuan;Dupuis, Russell D.
通讯作者:
Dupuis, Russell D.
DOI:
10.3390/ma11091487
发表时间:
2018-08-21
期刊:
Materials (Basel, Switzerland)
影响因子:
--
作者:
Griffin P;Zhu T;Oliver R
通讯作者:
Oliver R
影响因子:
3.2
作者:
Franke, A.;Hoffmann, M. P.;Sitar, Z.
通讯作者:
Sitar, Z.
影响因子:
6
作者:
Yang, Xiaokun;Xiao, Hongdi;Ma, Jin
通讯作者:
Ma, Jin
影响因子:
3.9
作者:
通讯作者:
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