ARC Centre of Excellence for Nanoscale BioPhotonics, Macquarie University, Sydney 2109, NSW, Australia.
ARC Centre of Excellence for Nanoscale BioPhotonics, Institute for Photonics and Advanced Sensing, School of Physical Sciences, The University of Adelaide, Adelaide 5005, SA, Australia.
Nanoscale. 2016 Jul 7;8(27):13099-130. doi: 10.1039/c5nr08477f.
Upconversion photoluminescence is a nonlinear effect where multiple lower energy excitation photons produce higher energy emission photons. This fundamentally interesting process has many applications in biomedical imaging, light source and display technology, and solar energy harvesting. In this review we discuss the underlying physical principles and their modelling using rate equations. We discuss how the understanding of photophysical processes enabled a strategic influence over the optical properties of upconversion especially in rationally designed materials. We subsequently present an overview of recent experimental strategies to control and optimize the optical properties of upconversion nanoparticles, focussing on their emission spectral properties and brightness.
上转换发光是一种非线性效应，其中多个低能量激发光子产生高能量发射光子。这个具有基础研究意义的过程在生物医学成像、光源和显示技术以及太阳能收集等领域有广泛的应用。在这篇综述中，我们讨论了基本的物理原理及其使用速率方程的建模方法。我们讨论了如何通过对光物理过程的理解来对特别是在合理设计的材料中的上转换光学性能进行战略性的影响。随后，我们介绍了最近控制和优化上转换纳米粒子光学性质的实验策略的概述，重点介绍了它们的发射光谱性质和亮度。
