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Article
Local symmetry breaking drives picosecond spin domain formation in polycrystalline halide perovskite films
Photoinduced spin–charge interconversion in semiconductors with spin–orbit coupling could provide a route to optically addressable spintronics without the use of external magnetic fields. However, in structura...
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Article
Open AccessDirect observation of ultrafast singlet exciton fission in three dimensions
We present quantitative ultrafast interferometric pump-probe microscopy capable of tracking of photoexcitations with sub-10 nm spatial precision in three dimensions with 15 fs temporal resolution, through retr...
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Article
Ultrafast exciton transport at early times in quantum dot solids
Quantum dot (QD) solids are an emerging platform for develo** a range of optoelectronic devices. Thus, understanding exciton dynamics is essential towards develo** and optimizing QD devices. Here, using tr...
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Article
Nanoscale chemical heterogeneity dominates the optoelectronic response of alloyed perovskite solar cells
Halide perovskites perform remarkably in optoelectronic devices. However, this exceptional performance is striking given that perovskites exhibit deep charge-carrier traps and spatial compositional and structu...
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Article
Open AccessMicrocavity-like exciton-polaritons can be the primary photoexcitation in bare organic semiconductors
Strong-coupling between excitons and confined photonic modes can lead to the formation of new quasi-particles termed exciton-polaritons which can display a range of interesting properties such as super-fluidit...
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Article
Long-range ballistic propagation of carriers in methylammonium lead iodide perovskite thin films
The performance of semiconductor devices is fundamentally governed by charge-carrier dynamics within the active materials1–6. Although advances have been made towards understanding these dynamics under steady-sta...
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Article
Open AccessDirect observation of ultrafast coherent exciton dynamics in helical π-stacks of self-assembled perylene bisimides
Ever since the discovery of dye self-assemblies in nature, there have been tremendous efforts to exploit biomimetic supramolecular assemblies for tailored artificial photon processing materials. This feature n...
