Quantum dots (QDs) face severe heat dissipation challenges when packaged with high-power light-emitting diodes (HPLEDs). In this study, a water-cooling remote (wc-remote) structure was proposed to significantly improve the heat dissipation of QD converters in a HPLED system. The QD converter was removed from the HPLED sources to isolate the thermal power generated from the chips and was assembled on a transparent glass chamber filled with flowing water for heat dissipation. The thermal performances and optical stability of the QD converters were investigated with different device structures, electrical injection powers, and flow rates. The results demonstrate that the optimized wc-remote structure reduced the maximum steady temperature of the QD converters to 71 °C at an ultrahigh electrical injection power of 100 W, while those for the conventional on-chip and remote structures were reduced by 453 and 265 °C, respectively. Operating aging tests confirmed that the wc-remote structure exhibits a slow degradation and almost no redshift in the optical spectra, contributing to a lifetime of 2~3 orders of magnitude longer than that of conventional structures. The proposed wc-remote structure can be a respectable start point for QD converters in hundred-watt-level applications, such as projection illumination and display.

当与高功率发光二极管（HPLED）封装在一起时，量子点（QD）面临着严峻的散热挑战。在这项研究中，提出了一种水冷远程（wc-remote）结构，以显着改善HPLED系统中QD转换器的散热。将QD转换器从HPLED光源中移出，以隔离芯片产生的热能，然后将其组装在装有流动水的透明玻璃室内，以进行散热。使用不同的器件结构，电注入功率和流速研究了QD转换器的热性能和光学稳定性。结果表明，在100 W的超高电注入功率下，优化的wc-remote结构将QD转换器的最大稳定温度降低到71°C，而传统的片上和远程结构的温度分别降低了453和265°C。工作老化测试证实，wc远程结构表现出缓慢的降解并且在光谱中几乎没有红移，与传统结构相比，其使用寿命延长了2〜3个数量级。拟议的wc远程结构可能是百瓦级应用中QD转换器（例如投影照明和显示）的一个不错的起点。