Perspective: Nonequilibrium dynamics of localized and delocalized excitons in colloidal quantum dot solids

Lee, Elizabeth M. Y.; Tisdale, William A.; Willard, Adam P.

doi:10.1116/1.5046694

Title: Perspective: Nonequilibrium dynamics of localized and delocalized excitons in colloidal quantum dot solids

Journal Article · 27 September 2018 · Journal of Vacuum Science and Technology A

DOI: https://doi.org/10.1116/1.5046694 · OSTI ID:1474768

Lee, Elizabeth M. Y.; Tisdale, William A.; Willard, Adam P.

Self-assembled quantum dot (QD) solids are a highly tunable class of materials with a wide range of applications in solid-state electronics and optoelectronic devices. In this perspective, the authors highlight how the presence of microscopic disorder in these materials can influence their macroscopic optoelectronic properties. Specifically, they consider the dynamics of excitons in energetically disordered QD solids using a theoretical model framework for both localized and delocalized excitonic regimes. In both cases, they emphasize the tendency of energetic disorder to promote nonequilibrium relaxation dynamics and discuss how the signatures of these nonequilibrium effects manifest in time-dependent spectral measurements. Moreover, they describe the connection between the microscopic dynamics of excitons within the material and the measurement of material specific parameters, such as emission linewidth broadening and energetic dissipation rate.

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Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0001088

OSTI ID:: 1474768

Journal Information:: Journal of Vacuum Science and Technology A, Journal Name: Journal of Vacuum Science and Technology A Journal Issue: 6 Vol. 36; ISSN 0734-2101

Publisher:: American Vacuum SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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