Near-Infrared-to-Visible Photon Upconversion
Near-Infrared-to-Visible Photon Upconversion
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DOI：
10.1007/978-3-030-70358-5_3
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发表时间：
2021-10
期刊：
影响因子：
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通讯作者：
Y. Sasaki;N. Yanai;N. Kimizuka
中科院分区：
文献类型：
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作者：
Y. Sasaki;N. Yanai;N. Kimizuka
克服太阳能转换中Shockley-Queisser极限的一种有前途的方法是基于三重态-三重态湮灭的光子上转换（TTA-UC），从近红外（NIR, bb0 700nm）光到可见光（Vis, < 700nm）光。然而，由于缺乏与系统间交叉（ISC）相关的较少或没有能量损失的合适的三重态敏化剂，很难实现有效的NIR-to-Vis ta - uc。在本章中，我们基于新型nir吸收三重态敏化剂的发展，概述了最近成功的NIR-to-Vis ta - uc的例子，例如具有小单线态-三重态交换分裂的半导体纳米晶体和具有直接单线态-三重态（S-T）吸收的Os配合物。
One of the promising methods to overcome the Shockley-Queisser limit in solar energy conversion is triplet-triplet annihilation-based photon upconversion (TTA-UC) from near-infrared (NIR, > 700 nm) light to visible (Vis, < 700 nm) light. However, it had been difficult to achieve efficient NIR-to-Vis TTA-UC mainly due to the absence of appropriate triplet sensitizers with less or no energy loss associated with intersystem crossing (ISC). In this chapter, we overview recent successful examples of NIR-to-Vis TTA-UC based on the developments of new NIR-absorbing triplet sensitizers, such as semiconductor nanocrystals with small singlet-triplet exchange splitting and Os complexes with direct singlet-to-triplet (S-T) absorption.