Ji Jae-Hoon, Kim Jinhwan, Jo GaeHun, Park Minyoung, Kang Jihye, Kamiko Masao, Ha Jae-Geun, Koo Sang-Mo, Hong JunHee, Koh Jung-Hyuk
School of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, Korea.
Institute of Industrial Science, The University of Tokyo, Meguro, Tokyo 153-8505, Japan.
J Nanosci Nanotechnol. 2020 Jan 1;20(1):608-610. doi: 10.1166/jnn.2020.17267.
Light Emitting Diodes (LED) are highly energy efficient and offer long-life times for display applications. Long life and minimal energy consumption are often the most attractive advantages for electronic devices. Because LEDs are based on compound semiconductors, which explore the direct transition between the conduction and valance band edges, thermal energy loss can be minimized during operation. However, even though these types of LEDs are based on direct transition type semiconductors, thermal energy is still emitted during operation owing to forward conduction and reverse leakage currents. This research proposes capturing this energy loss through thermoelectric module-based energy recycling methods to improve the energy efficiency of LED applications, achieving savings of up to 18%. Additional analysis was performed on high power LED sources resulting in the manufacture of a high-power LED light grid system.
发光二极管（LED）具有高能效，并且在显示应用中使用寿命长。长寿命和低能耗通常是电子设备最具吸引力的优势。由于LED基于化合物半导体，利用了导带和价带边缘之间的直接跃迁，因此在运行过程中热能损失可以降至最低。然而，即使这类LED基于直接跃迁型半导体，由于正向传导和反向漏电流，在运行过程中仍会散发热能。本研究提出通过基于热电模块的能量回收方法来捕获这种能量损失，以提高LED应用的能源效率，实现高达18%的节能。对高功率LED光源进行了额外分析，最终制造出了一个高功率LED光栅系统。
