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Title: Measuring the ultrafast spectral diffusion dynamics of colloidal CdSe nanomaterials
Authors: Do, Thanh Nhut
Zhang, Cheng
Ong, Xuanwei
Lian, Jie
Chan, Yinthai
Tan, Howe-Siang
Keywords: Science::Chemistry
Issue Date: 2019
Source: Do, T. N., Zhang, C., Ong, X., Lian, J., Chan, Y., & Tan, H.-S. (2019). Measuring the Ultrafast Spectral Diffusion Dynamics of Colloidal CdSe Nanomaterials. MRS Advances, 4(1), 1–7. doi:10.1557/adv.2019.38
Journal: MRS Advances
Abstract: We use ultrafast coherent two-dimensional electronic spectroscopy (2DES) to study the ultrafast spectral diffusion dynamics of colloidal CdSe quantum dots (QDs) and CdSe nanoplatelets (NPLs). The Center Line Slope (CLS) and Nodal Line Slope (NLS) techniques were employed to analyse the 2DES spectra. We show that no spectral diffusion dynamics occurs for the CdSe QDs. On the other hand, spectral diffusion was observed in the CdSe 5 mono-layers NPLs heavy-hole transition. The normalized Frequency Fluctuation Correlation Function (FFCF) of the CdSe NPLs heavy-hole transition was measured to have a major fast decay component at 140 fs.
ISSN: 2059-8521
DOI: 10.1557/adv.2019.38
Rights: © 2019 Materials Research Society. All rights reserved. This paper was published in MRS Advances and is made available with permission of Materials Research Society.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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