Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 53, Issue 47, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6463/ab77dc
Keywords
ultrafast pump-probe transient absorption spectroscopy; carrier dynamics; 2D materials; heterostructures
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Funding
- National Natural Science Foundation of China [611805146]
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Excited-state dynamics provides an intrinsic molecular contrast in the examination of samples. With its excellent spatial-temporal resolution, superior detection sensitivity, and chemical specificity, pump-probe microscopy has become a powerful technique for monitoring these dynamics in nonfluorescent chromophores and nanomaterials. In this paper, we aim to provide a detailed discussion on their background, working mechanisms, and experimental setups, as well as investigating the advantages of pump-probe micro-spectroscopy. We explore carrier dynamics in prevailing two-dimensional materials such as TMDCs, graphene, black phosphorus, perovskite materials, and various heterostructures, in the context of pump-probe micro-spectroscopy. This review may help elucidate the basic characteristics of carrier excitation dynamics in 2D materials, and contribute to the design and optimization of related optoelectronic devices.
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