浏览全部资源
扫码关注微信
1.山西中科潞安紫外光电科技有限公司, 山西 长治 046000
2.中国科学院半导体研究所 半导体照明技术研究开发中心, 北京 100083
[ "王雪(1991-),女,山西长治人,硕士,工程师,2017年于陕西科技大学获得硕士学位,主要从事芯片设计与开发研究。 E-mail: wangxue@luan-uv.cn" ]
收稿日期:2022-11-07,
修回日期:2022-11-25,
纸质出版日期:2023-05-05
移动端阅览
王雪,刘乃鑫,王兵等.AlGaN基深紫外LED的NiAu透明电极及其接触特性[J].发光学报,2023,44(05):898-903.
WANG Xue,LIU Naixin,WANG Bing,et al.Ohmic Contact Characteristics of AlGaN-based Deep-ultraviolet Light-emitting-diodes with NiAu Transparent Electrode[J].Chinese Journal of Luminescence,2023,44(05):898-903.
王雪,刘乃鑫,王兵等.AlGaN基深紫外LED的NiAu透明电极及其接触特性[J].发光学报,2023,44(05):898-903. DOI: 10.37188/CJL.20220385.
WANG Xue,LIU Naixin,WANG Bing,et al.Ohmic Contact Characteristics of AlGaN-based Deep-ultraviolet Light-emitting-diodes with NiAu Transparent Electrode[J].Chinese Journal of Luminescence,2023,44(05):898-903. DOI: 10.37188/CJL.20220385.
在p⁃AlGaN表面沉积Ni/Au/Ni/Au透明电极体系,通过传输线模型测试,研究了退火温度对Ni/Au/Ni/Au与p⁃AlGaN材料接触特性的影响。结果表明,AlGaN基深紫外LED采用Ni/Au/Ni/Au金属体系,在600 ℃空气氛围下退火3 min形成p型半导体材料NiO。进一步优化Ni/Au/Ni/Au体系金属厚度,当Ni/Au/Ni/Au各层厚度由20/20/20/20 nm减薄至2/2/5/5 nm,并在600 ℃空气氛围退火3 min,其与p⁃AlGaN材料的接触电阻率从3.23×10
-1
Ω·cm
2
降到2.58×10
-4
Ω·cm
2
。采用上述优化的Ni/Au/Ni/Au体系制备的深紫外LED器件,器件光电特性得到了改善。在150 mA驱动下工作电压低至5.8 V;通过提升电极透过率,光输出功率提升18.9%。
A Ni/Au/Ni/Au transparent electrode system was deposited on the surface of p-AlGaN, and the effects of annealing temperature on the contact characteristics of Ni/Au/Ni/Au with p-AlGaN were studied by transmission line model. When the AlGaN-based deep ultraviolet LED adopted Ni/Au/Ni/Au metal system, meanwhile annealed at 600 ℃ for 3 min, the results show that p-type semiconductor material NiO can be formed in the contact interface. The metal thickness of Ni/Au/Ni/Au system was further optimized. When the Ni/Au/Ni/Au layers were thinned from 20/20/20/20 nm to 2/2/5/5 nm,with the annealing condition at 600 ℃ for 3 min, the specific contact resistivity decreased from 3.23×10
-1
Ω·cm
2
to 2.58×10
-4
Ω·cm
2
. Using the above optimized Ni/Au/Ni/Au system into LED chip process, the photoelectric characteristics of the LED device can be improved drastically. The operating voltage was reduced to 5.8 V at 150 mA, as the increase of the electrode transmittance, the optical output power was increased by 18.9% at the same current.
PENG X C , GUO W , XU H Q , et al . Significantly boosted external quantum efficiency of AlGaN-based DUV-LED utilizing thermal annealed Ni/Al reflective electrodes [J]. Appl. Phys. Express , 2021 , 14 ( 7 ): 072005-1-4 . doi: 10.35848/1882-0786/ac0b07 http://dx.doi.org/10.35848/1882-0786/ac0b07
蔡钧安 , 秦志新 . 纳米压印制备的光子晶体结构对AlGaN基材料深紫外出光效率的提高 [J]. 发光学报 , 2014 , 35 ( 8 ): 998 - 1002 . doi: 10.3788/fgxb20143508.0998 http://dx.doi.org/10.3788/fgxb20143508.0998
CAI J A , QIN Z X . Enhancement of Deep-UV light extraction efficiency from bulk AlGaN with photonic crystals fabricated by nanoimprint lithography [J]. Chin. J. Lumin. , 2014 , 35 ( 8 ): 998 - 1002 . (in Chinese) . doi: 10.3788/fgxb20143508.0998 http://dx.doi.org/10.3788/fgxb20143508.0998
王福学 , 叶煊超 . 量子阱层和垒层具有不同Al组分的270/290/330 nm AlGaN基深紫外LED光电性能 [J]. 发光学报 , 2017 , 38 ( 1 ): 57 - 62 . doi: 10.3788/fgxb20173801.0057 http://dx.doi.org/10.3788/fgxb20173801.0057
WANG F X , YE X C . 270/290/330 nm AlGaN-based deep ultraviolet light-emitting diodes with different Al content in quantum wells and barriers [J]. Chin. J. Lumin. , 2017 , 38 ( 1 ): 57 - 62 . (in Chinese) . doi: 10.3788/fgxb20173801.0057 http://dx.doi.org/10.3788/fgxb20173801.0057
JO M , MAEDA N , HIRAYAMA H . Enhanced light extraction in 260 nm light-emitting diode with a highly transparent p-AlGaN layer [J]. Appl. Phys. Express , 2016 , 9 ( 1 ): 012102-1-3 . doi: 10.7567/APEX.9.012102 http://dx.doi.org/10.7567/APEX.9.012102
TAKANO T , MINO T , SAKAI J , et al . Deep-ultraviolet light-emitting diodes with external quantum efficiency higher than 20% at 275 nm achieved by improving light-extraction efficiency [J]. Appl. Phys. Express , 2017 , 10 ( 3 ): 031002 . doi: 10.7567/apex.10.031002 http://dx.doi.org/10.7567/apex.10.031002
祁昌亚 , 胡正飞 , 张燕 , 等 . AlGaN紫外探测器p电极的Ni/Au/Ni/Au欧姆接触结构研究 [J]. 红外 , 2016 , 37 ( 2 ): 22 - 28 . doi: 10.3969/j.issn.1672-8785.2016.02.004 http://dx.doi.org/10.3969/j.issn.1672-8785.2016.02.004
QI C Y , HU Z F , ZHANG Y , et al . Research on Ni/Au/Ni/Au Ohmic contact structures of p-AlGaN ultraviolet detector [J]. Infrared , 2016 , 37 ( 2 ): 22 - 28 . (in Chinese) . doi: 10.3969/j.issn.1672-8785.2016.02.004 http://dx.doi.org/10.3969/j.issn.1672-8785.2016.02.004
WANG L Y , SONG W D , HU W X , et al . Efficiency enhancement of ultraviolet light-emitting diodes with segmentally graded p-type AlGaN layer [J]. Chin. Phys. B , 2019 , 28 ( 1 ): 018503-1-6 . doi: 10.1088/1674-1056/28/1/018503 http://dx.doi.org/10.1088/1674-1056/28/1/018503
KIM K H , LEE T H , SON K R , et al . Performance improvements in AlGaN-based ultraviolet light-emitting diodes due to electrical doping effects [J]. Mater. Des. , 2018 , 153 : 94 - 103 . doi: 10.1016/j.matdes.2018.04.086 http://dx.doi.org/10.1016/j.matdes.2018.04.086
徐帅 , 王光绪 , 吴小明 , 等 . Ni插入层对Ag/p-GaN界面接触性能的影响机理 [J]. 发光学报 , 2019 , 40 ( 7 ): 865 - 870 . doi: 10.3788/fgxb20194007.0865 http://dx.doi.org/10.3788/fgxb20194007.0865
XU S , WANG G X , WU X M , et al . Influence mechanism of Ni interlayer on Ag/p-GaN interfacial contact performance [J]. Chin. J. Lumin. , 2019 , 40 ( 7 ): 865 - 870 . (in Chinese) . doi: 10.3788/fgxb20194007.0865 http://dx.doi.org/10.3788/fgxb20194007.0865
王雪 , 崔志勇 , 王兵 , 等 . ITO/Al复合透明导电薄膜对紫外LED光电性能的提升 [J]. 半导体技术 , 2020 , 45 ( 9 ): 680 - 684 . doi: 10.13290/j.cnki.bdtjs.2020.09.004 http://dx.doi.org/10.13290/j.cnki.bdtjs.2020.09.004
WANG X , CUI Z Y , WANG B , et al . Improvement of optoelectronic properties of ultraviolet LEDs with ITO/Al composite transparent conductive flims [J]. Semicond. Technol. , 2020 , 45 ( 9 ): 680 - 684 . (in Chinese) . doi: 10.13290/j.cnki.bdtjs.2020.09.004 http://dx.doi.org/10.13290/j.cnki.bdtjs.2020.09.004
MALLEM S P R , AHN W H , LEE J H , et al . Influence of thermal annealing on the PdAl/Au metal stack Ohmic contacts to p-AlGaN [J]. Crystals , 2020 , 10 ( 12 ): 1091-1-7 . doi: 10.3390/cryst10121091 http://dx.doi.org/10.3390/cryst10121091
ZHAO S R , MCFAVILEN H , WANG S , et al . Temperature dependence and high-temperature stability of the annealed Ni/Au Ohmic contact to p -type GaN in air [J]. J. Electron. Mater. , 2016 , 45 ( 4 ): 2087 - 2091 . doi: 10.1007/s11664-015-4278-3 http://dx.doi.org/10.1007/s11664-015-4278-3
MAEDA N , JO M , HIRAYAMA H . Improving the efficiency of AlGaN Deep-UV LEDs by using highly reflective Ni/Al p-type electrodes [J]. Phys. Status Solidi A , 2017 , 215 ( 8 ): 1700435-1-5 . doi: 10.1002/pssa.201700435 http://dx.doi.org/10.1002/pssa.201700435
HU Z F , LI X Y , ZHANG Y . Characteristics of Ni/Au/Ni/Au Ohmic contact in a p-AlGaN/GaN semiconductor [J]. IOP Conf. Ser.: Mater. Sci. Eng. , 2020 , 770: 01 2018-1-9 . doi: 10.1088/1757-899x/770/1/012018 http://dx.doi.org/10.1088/1757-899x/770/1/012018
CHEN L C , CHEN F R , KAI J J , et al . Microstructural investigation of oxidized Ni/Au Ohmic contact to p -type GaN [J]. J. Appl. Phys. , 1999 , 86 ( 7 ): 3826 - 3832 . doi: 10.1063/1.371294 http://dx.doi.org/10.1063/1.371294
HO J K , JONG C S , CHIU C C , et al . Low-resistance Ohmic contacts to p -type GaN [J]. Appl. Phys. Lett. , 1999 , 74 ( 9 ): 1275 - 1277 . doi: 10.1063/1.123546 http://dx.doi.org/10.1063/1.123546
0
浏览量
548
下载量
2
CSCD
关联资源
相关文章
相关作者
相关机构