Abstract Single-photon emitters are crucial building blocks for optical quantum technologies. Hexagonal boron nitride (hBN) is a promising two-dimensional material that hosts bright, room-temperature single-photon emitters. However, photo instability persistent challenge preventing practical applications of these properties. Here, we reveal the ubiquitous photobleaching hBN vacancy Independent ...

Organic films formed by temperature-gradient solidification up-convert visible light of subsolar intensity into UV in air with record-long photostability.

Atomic substitution in sidechains of an organic semiconductor show these solubilizing groups are not simple spectators. Silicon is the most electron withdrawing group 14 element, increasing photostability and offering desirable crystal packing.

The Zn-doped Cu 2 O crystals were decorated with CoNi cocatalyst using electrodeposition technique. This approach successfully enhanced the photocatalytic activity and photostability of photocatalyst.

The photophysics of indigo as well as of bispyrroleindigo, the basic chromophore of indigo, has been investigated with ab initio electronic-structure calculations. Vertical electronic excitation energies and excited-state potential-energy profiles have been calculated with the CASSCF, CASPT2 and CC2 methods. The calculations reveal that indigo and bispyrroleindigo undergo intramolecular single-...

We analyze the behavior of a series of newly synthesized (R-NH₃)₂PbX₄ perovskites and, in particular, discuss the possible reasons which cause their degradation under UV illumination. Experimental results show that the degradation process depends a lot on their molecular components: not only the inorganic part, but also the chemical structure of the organic moieties play an important role in bl...