Pu Shirui, Fu Jia, Liao Yutian, Ge Lurong, Zhou Yihao, Zhang Songlin, Zhao Shenlong, Liu Xiaowei, Hu Xuejiao, Liu Kang, Chen Jun
MOE Key Laboratory of Hydrodynamic Transients, School of Power and Mechanical Engineering, Wuhan University, Wuhan, 430072, Hubei, China.
Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA.
Adv Mater. 2020 Apr;32(17):e1907307. doi: 10.1002/adma.201907307. Epub 2020 Feb 12.
High temperature brings adverse impacts on the energy efficiency, and even destroys a semiconductor device. Here, a novel and cost-effective strategy is proposed to boost the energy efficiency of semiconductor devices by using the self-adaptive evaporative cooling of a lithium- and bromine-enriched polyacrylamide hydrogel. Water inside the hydrogel can quickly evaporate to dissipate the waste heat generated by the nugatory carrier transport in the P-N junction. In dormancy, the hydrogel harvests water molecules from the surrounding air to regenerate itself. The hydrogel is demonstrated to low down the operating temperature of a commercial polycrystalline silicon solar cell by 17 °C under one sun condition and enhances its efficiency from 14.5% to 15.5%. It is also capable of increasing the maximum power of a simulated chip by 45% at a fixed operating temperature. The hydrogel is expected to be widely adopted in current semiconductor industry to improve its energy efficiency.
高温会对能源效率产生不利影响，甚至会损坏半导体器件。在此，我们提出了一种新颖且经济高效的策略，即通过使用富含锂和溴的聚丙烯酰胺水凝胶的自适应蒸发冷却来提高半导体器件的能源效率。水凝胶内部的水能够迅速蒸发，以消散P-N结中无用载流子传输产生的废热。在休眠状态下，水凝胶从周围空气中收集水分子以实现自我再生。实验证明，该水凝胶在一个太阳光照条件下可将商用多晶硅太阳能电池的工作温度降低17°C，并将其效率从14.5%提高到15.5%。在固定工作温度下，它还能够将模拟芯片的最大功率提高45%。这种水凝胶有望在当前半导体行业中得到广泛应用，以提高其能源效率。
