Koharagi Mio, Harada Naoyuki, Okumura Keisuke, Miyano Junji, Hisamitsu Shota, Kimizuka Nobuo, Yanai Nobuhiro
Department of Applied Chemistry, Graduate School of Engineering, Center for Molecular Systems (CMS), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.
PRESTO, JST, Honcho 4-1-8, Kawaguchi, Saitama 332-0012, Japan.
Nanoscale. 2021 Dec 13;13(47):19890-19893. doi: 10.1039/d1nr06588b.
The first example of triplet-triplet annihilation-based photon upconversion (TTA-UC) from green light to ultraviolet (UV) light sensitized by lead halide perovskite nanocrystals is demonstrated. The combination of a new transmitter that extracts triplet energy from perovskite and a UV emitter with a low triplet energy level lengthens the excitation wavelength of perovskite-sensitized upconverted UV emission.
展示了基于三重态-三重态湮灭的光子上转换（TTA-UC）的首个实例，即由卤化铅钙钛矿纳米晶体敏化，将绿光转换为紫外光（UV）。一种从钙钛矿中提取三重态能量的新型发射器与一个具有低三重态能级的UV发射器相结合，延长了钙钛矿敏化上转换UV发射的激发波长。
