Luminescent colloidal CdSe nanorings are a recently developed type of semiconductor
structure that have attracted interest due to the potential for rich physics arising from their
nontrivial toroidal shape. However, the exciton properties and dynamics of these materials
with complex topology are not yet well understood. Here, we use a combination of
femtosecond vibrational spectroscopy, temperature-resolved photoluminescence (PL), and
single-particle measurements to study these materials. We find that on transformation of …

Luminescent colloidal CdSe nanorings are a new type of semiconductor structure that have
attracted interest due to the potential for unique physics arising from their non-trivial toroidal
shape. However, the exciton properties and dynamics of these materials with complex
topology are not yet well understood. Here, we use a combination of femtosecond
vibrational spectroscopy, temperature-resolved photoluminescence (PL), and single particle
measurements to study these materials. We find that on transformation of CdSe …