We present a study of the light output power and the thermal impedance of 281nm emission AlGaN based micropixel LEDs. A modular interconnected micropixel array design is presented which enables dense packing with area and power scalability. We study 5–15μm diameter stand-alone devices and parallel-connected micropixel arrays with 5μm interpixel gaps. A standalone 5μm pixel emits 291Wcm⁻² at 10.2kAcm⁻² DC-drive. A power as high as 23mW (361Wcm⁻²) was measured at a pulsed-pump current of 800mA (∼15kAcm⁻²) for an interconnected array. These are the smallest and brightest DUV LEDs to date.

中文翻译：

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高亮度280nm发射AlGaN微像素发光二极管阵列的光热研究

我们介绍了基于281nm发射AlGaN的微像素LED的光输出功率和热阻抗的研究。提出了一种模块化的互连微像素阵列设计，该设计能够以面积和功率可扩展性实现密集封装。我们研究5-15 μ米直径单机设备，并用5并联连接的微像素阵列μ米间间隙。一个独立的5 μ m个象素发射291Wcm ^-2在10.2kAcm ^-2 DC驱动。对于互连阵列，在800mA（〜15kAcm ^-2）的脉冲泵电流下测得的功率高达23mW（361Wcm ^-2）。这些是迄今为止最小，最亮的DUV LED。