Wang Qixing, Wee Andrew T S
Max Planck Institute for Solid State Research, Stuttgart D-70569, Germany.
Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117551, Singapore.
J Phys Condens Matter. 2021 May 7;33(22). doi: 10.1088/1361-648X/abf37f.
Photoluminescence (PL) upconversion is a phenomenon involving light-matter interactions, where the energy of emitted photons is higher than that of the incident photons. PL upconversion is an intriguing process in two-dimensional materials and specifically designed 2D heterostructures, which have potential upconversion applications in optoelectronic devices, bioimaging, and semiconductor cooling. In this review, we focus on the recent advances in photoluminescence upconversion in two-dimensional materials and their heterostructures. We discuss the upconversion mechanisms, applications, and future outlook of upconversion in two-dimensional materials.
光致发光上转换是一种涉及光与物质相互作用的现象，其中发射光子的能量高于入射光子的能量。光致发光上转换在二维材料和专门设计的二维异质结构中是一个引人入胜的过程，这些材料和结构在光电器件、生物成像和半导体冷却方面具有潜在的上转换应用。在这篇综述中，我们聚焦于二维材料及其异质结构中光致发光上转换的最新进展。我们讨论了二维材料中上转换的机制、应用以及未来展望。
