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Revealing the fine-structure in semiconductor nanomaterials by multidimensional coherent spectroscopy

Grant number: 19/22565-6
Support type:Scholarships in Brazil - Master
Effective date (Start): January 01, 2020
Effective date (End): October 31, 2021
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal researcher:Lázaro Aurélio Padilha Junior
Grantee:Tomás Aguiar Carneiro Ferreira
Home Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil


One of the most important current challenges in the field of colloidal semiconductor quantum dots is to access the materials fine-structure with high enough temporal resolution to allow the understanding of fundamental physical phenomena inside of these quantum confined materials. In this project, we will face this challenge by employing a Multidimensional Coherent Spectroscopy method, which is an extension of transient four-wave mixing (TFWM) spectroscopy and allows obtaining spectral signatures with resolution of sub-meV, while maintaining the ultrafast temporal resolution. Using this method, we will explore fundamental physical processes, such as electron-phonon interactions and the nature of the exciton ground state, in nanomaterials. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
NAGAMINE, GABRIEL; JEONG, BYEONG GUK; FERREIRA, TOMAS A. C.; CHANG, JUN HYUK; PARK, KYOUNGWON; LEE, DOH C.; BAE, WAN KI; PADILHA, LAZARO A. Efficient Optical Gain in Spherical Quantum Wells Enabled by Engineering Biexciton Interactions. ACS PHOTONICS, v. 7, n. 8, p. 2252-2264, AUG 19 2020. Web of Science Citations: 0.

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