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Akademický článek

Optically pumped room temperature low threshold deep UV lasers grown on native AlN substrates

Autor: Kumar Kalapala Akhil Raj, Liu Dong, Cho Sang June, Park Jeongpil, Zhao Deyin, Albrecht John D., Moody Baxter, Ma Zhenqiang, Zhou Weidong

Publikováno v: Opto-Electronic Advances, Vol 3, Iss 4, Pp 190025-1-190025-6 (2020)

We report here an optically pumped deep UV edge emitting laser with AlGaN multiple quantum wells (MQWs) active region grown on AlN substrate by low pressure organometallic vapor phase epitaxy (LP-OMVPE) in a high-temperature reactor. The 21 period Al

Externí odkaz: https://doaj.org/article/f0d56e4bf7b445e583ceaa89ff012830

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Akademický článek

Endograft-specific hemodynamics after endovascular aneurysm repair: a CFD analysis.

Autor: Zhang, Yuansu¹ (AUTHOR), Zhao, Deyin² (AUTHOR), Si, Xiaomao³ (AUTHOR), Yue, Xiaoxing¹ (AUTHOR), Chen, Jinhui¹ (AUTHOR), Lu, Yongming¹ (AUTHOR), Qiu, Peng⁴ (AUTHOR), Lu, Xinwu⁴ (AUTHOR), Yang, Xinrui⁴ (AUTHOR) cinder_13@126.com

Publikováno v: Scientific Reports. 12/28/2024, Vol. 14 Issue 1, p1-14. 14p.

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Akademický článek

Unraveling phenotypic heterogeneity in stanford type B aortic dissection patients through machine learning clustering analysis of cardiovascular CT imaging

Autor: Liu, Kun ^{1, 9}, Zhao, Deyin ^{2, 9}, Feng, Lvfan ³, Zhang, Zhaoxuan ⁴, Qiu, Peng ⁵, Wu, Xiaoyu ⁵, Wang, Ruihua ⁵, Hussain, Azad ⁶, Uzokov, Jamol ⁷, Han, Yanshuo ^{4, 8, ∗}

Publikováno v: In Hellenic Journal of Cardiology August 2024

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Report

229 nm UV LEDs using p-type silicon for increased hole injection

Autor: Liu, Dong, Cho, Sang June, Park, Jeongpil, Seo, Jung-Hun, Dalmau, Rafael, Zhao, Deyin, Kim, Kwangeun, Kim, Munho, Lee, In-Kyu, Albrecht, John D., Zhou, Weidong, Moody, Baxter, Ma, Zhenqiang

Publikováno v: published: Appl. Phys. Lett. 112, 081101 (2018)

Ultraviolet (UV) light emission at 229 nm wavelength from diode structures based on AlN/Al0.77Ga0.23N quantum wells and using p-type Si to significantly increase hole injection was reported. Both electrical and optical characteristics were measured.

Externí odkaz: http://arxiv.org/abs/1708.03973

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Report

UVC LEDs on Bulk AlN Substrates Using Silicon Nanomembranes for Efficient Hole Injection

Autor: Cho, Sang June, Liu, Dong, Seo, Jung-Hun, Dalmau, Rafael, Kim, Kwangeun, Park, Jeongpil, Zhao, Deyin, Yin, Xin, Jung, Yei Hwan, Lee, In-Kyu, Kim, Munho, Wang, Xudong, Albrecht, John D., Moody, Weidong Zhou Baxter, Ma, Zhenqiang

As UV LEDs are explored at shorter wavelengths (< 280 nm) into the UVC spectral range, the crystalline quality of epitaxial AlGaN films with high Al compositions and inefficient hole injection from p-type AlGaN severely limit the LED performance and

Externí odkaz: http://arxiv.org/abs/1707.04223

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