稀土上转换发光材料在太阳能电池、近红外防伪、生物应用等领域展示了广泛的应用前景, 但还存在发光效率低、吸收截面小等亟待解决的瓶颈问题。上转换纳米晶的局域电磁场调制是提高其发光强度/效率的最有效的方法之一。本文系统地总结与阐述了近年来国内外在利用贵金属/半导体纳米材料的表面等离子体效应和光子晶体效应诱导上转换增强方面的研究进展。首先介绍了局域场增强上转换发光的基本原理; 在此基础上介绍了关于局域场调制增强上转换发光的主要研究工作; 总结了采用局域场调控获取高效上转换发光的基本规律。

Rare earth doped upconversion nanocrystals (RE-UCNCs) have attracted extensive interests due to their great potential applications in solar cells, near-infrared anticounterfei, bio-applications etc. However, these applications are limited by their lower upconvsersion luminescent strength/efficiency, and smaller absorption cross-section. The local electromagnetic field modulation on UCNCs is a powerful strategy to enhance the strength/efficiency of UCNCs. This review offered a comprehensive framework for metal/semiconductor plasmon-induced and photonic crystal effect induced upconversion enhancement. We first introduced the general interaction rules between the localized electromagnetic field in metal/semiconductor nanostructure/photonic crystals and UCNCs. Then, we summed up the recent published works on the local field modulation-induced upconversion enhancement. Finally, we did our best to discover the generality of obtaining highly improved photoluminescence for any emitters and the personality of realizing highly improved upconversion enhancement.