High power UV-B LEDs with long lifetime

机译：大功率UV-B LED，使用寿命长

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UV light emitters in the UV-B spectral range between 280 nm and 320 nm are of great interest for applications such as phototherapy, gas sensing, plant growth lighting, and UV curing. In this paper we present high power UV-B LEDs grown by MOVPE on sapphire substrates. By optimizing the heterostructure design, growth parameters and processing technologies, significant progress was achieved with respect to internal efficiency, injection efficiency and light extraction. LED chips emitting at 310 nm with maximum output powers of up to 18 mW have been realized. Lifetime measurements show approximately 20% decrease in emission power after 1,000 operating hours at 100 mA and 5mW output power and less than 30% after 3,500 hours of operation, thus indicating an L_(50) lifetime beyond 10,000 hours.

机译：UV-B光谱范围在280 nm至320 nm之间的UV发光器对于诸如光疗，气体感应，植物生长照明和UV固化等应用非常感兴趣。在本文中，我们介绍了MOVPE在蓝宝石衬底上生长的高功率UV-B LED。通过优化异质结构设计，生长参数和加工技术，在内部效率，注入效率和光提取方面取得了重大进展。已经实现了以310 nm发射的最大输出功率高达18 mW的LED芯片。寿命测量显示，在100 mA和5mW输出功率下运行1000小时后，发射功率下降约20％，在运行3500小时后，发射功率下降不到30％，因此表明L_（50）寿命超过10,000小时。

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来源
《Gallium nitride materials and devices X》|2015年|93631K.1-93631K.13|共13页
会议地点 San Francisco CA(US)
作者
Jens Rass; Tim Kolbe; Neysha Lobo Ploch; Tim Wernicke; Frank Mehnke; Christian Kuhn; Johannes Enslin; Martin Guttmann; Christoph Reich; Anna Mogilatenko; Johannes Glaab; Christoph Stoelmacker; Mickael Lapeyrade; Sven Einfeldt; Markus Weyers; Michael Kneissl;
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作者单位

Ferdinand-Braun-Institut, Leibniz-Institut fuer Hoechstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany,Technische Universitaet Berlin, Institut fuer Festkoerperphysik, Hardenbergstr. 36, EW 6-1, 10623 Berlin, Germany;

Ferdinand-Braun-Institut, Leibniz-Institut fuer Hoechstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany,Technische Universitaet Berlin, Institut fuer Festkoerperphysik, Hardenbergstr. 36, EW 6-1, 10623 Berlin, Germany;

Ferdinand-Braun-Institut, Leibniz-Institut fuer Hoechstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany,Technische Universitaet Berlin, Institut fuer Festkoerperphysik, Hardenbergstr. 36, EW 6-1, 10623 Berlin, Germany;

Technische Universitaet Berlin, Institut fuer Festkoerperphysik, Hardenbergstr. 36, EW 6-1, 10623 Berlin, Germany;

Technische Universitaet Berlin, Institut fuer Festkoerperphysik, Hardenbergstr. 36, EW 6-1, 10623 Berlin, Germany;

Technische Universitaet Berlin, Institut fuer Festkoerperphysik, Hardenbergstr. 36, EW 6-1, 10623 Berlin, Germany;

Technische Universitaet Berlin, Institut fuer Festkoerperphysik, Hardenbergstr. 36, EW 6-1, 10623 Berlin, Germany;

Technische Universitaet Berlin, Institut fuer Festkoerperphysik, Hardenbergstr. 36, EW 6-1, 10623 Berlin, Germany;

Technische Universitaet Berlin, Institut fuer Festkoerperphysik, Hardenbergstr. 36, EW 6-1, 10623 Berlin, Germany;

Ferdinand-Braun-Institut, Leibniz-Institut fuer Hoechstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany;

Ferdinand-Braun-Institut, Leibniz-Institut fuer Hoechstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany;

Ferdinand-Braun-Institut, Leibniz-Institut fuer Hoechstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany;

Ferdinand-Braun-Institut, Leibniz-Institut fuer Hoechstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany;

Ferdinand-Braun-Institut, Leibniz-Institut fuer Hoechstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany;

Ferdinand-Braun-Institut, Leibniz-Institut fuer Hoechstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany;

Ferdinand-Braun-Institut, Leibniz-Institut fuer Hoechstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany,Technische Universitaet Berlin, Institut fuer Festkoerperphysik, Hardenbergstr. 36, EW 6-1, 10623 Berlin, Germany;

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原文格式 PDF
正文语种 eng
中图分类
关键词
UV-LED; AlGaN; lifetime; UV-B; electroluminescence; MOVPE;

机译：紫外线LED;氮化铝镓;一生; UV-B;电致发光电影;

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2. Lumen Degradation Lifetime Prediction for High-Power White LEDs Based on the Gamma Process Model [J] . Ibrahim Mesfin Seid, Fan Jiajie, Yung Winco K. C., Photonics Journal, IEEE . 2019,第6期

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3. Applying grey model to predict the useful lifetime for high-power white LEDs [J] . Fu-Kwun Wang, Yi-Chen Lu, Tao-Peng Chu Optical and quantum electronics . 2016,第1期

机译：应用灰色模型预测大功率白光LED的使用寿命
4. High power UV-B LEDs with long lifetime [C] . Jens Rass, Tim Kolbe, Neysha Lobo Ploch, Conference on gallium nitride materials and devices X . 2015

机译：高功率UV-B LED，寿命长
5. Intraspecific responses of tomato (Lycopersicon esculentum) seedlings to enhanced UV-B radiation in controlled environments and the field [D] . Keelan, Stephen Ambrose. 1997

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6. A low-cost linear DC – 35 MHz high-power LED driver for continuous wave (CW) and fluorescence lifetime imaging (FLIM) [O] . Sylvain Gioux, Vida Kianzad, Razvan Ciocan, -1

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7. Lumen Degradation Lifetime Prediction for High-Power White LEDs Based on the Gamma Process Model [O] . Mesfin Seid Ibrahim, Jiajie Fan, Winco K.C. Yung, 2019

机译：基于伽马工艺模型的高功率白光LED漏洞寿命预测

High power UV-B LEDs with long lifetime

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