Fig. 3: Photophysical properties of a ligand localized excited state.
From: Thermally-assisted photosensitized emission in a trivalent terbium complex

The emission spectrum of Lu-dpph (a: λex = 400 nm; delay: 80 ms; 100 K). Emission images of Lu-dpph excited using UV-light (b: λex = 375 nm; 293 K) under vacuum conditions. Emission-decay curves of Lu-dpph (c: λex = 400 nm; λem = 530 nm; 293 K).