Accessing the excited state dynamics in nanostructures by multidimensional coherent spectroscopy

• Grant number: 19/22576-8
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: February 01, 2020
• End date: December 31, 2022
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Lázaro Aurélio Padilha Junior
• Grantee: Diogo Burigo Almeida
• Host Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 18/15574-6 - Advanced spectroscopy of nanomaterials: from ensemble to single-particle, AP.JP2

Abstract

The main goal of this project is the study of excited state carrier dynamics, especially multi-exciton interactions, in colloidal quantum dots, through Multidimensional Coherent Spectroscopy (MDCS). MDCS is capable of differentiate homogeneous from inhomogeneous spectral features. This is very valuable for resolving the muti-body spectral signatures, e.g. phonon couplings of quantum dots, that inheritably have large inhomogeneous spectral broadening due to particle size distribution. The samples will be studied at liquid helium temperatures and put in the excited states by the means of a pre-pulse train that will irradiate the sample in parallel with the other four pulses normally present in MDCS. The instrumentation effort involved in the assembly of the whole setup from scratch will result in the assembly of the first MDCS setup in Latin America. (AU)

Scientific publications

(7)

(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)

SOUSA, CLAUDEVAN A.; BONATO, LUIZ G.; GONCALVES, EDUARDO S.; ALO, ARTHUR; VALE, BRENER R. C.; ALMEIDA, DIOGO B.; NOGUEIRA, ANA F.; ZAGONEL, LUIZ F.; PADILHA, LAZARO A.. Addressing the Magnitude of the Nonlinear Refraction Response in Perovskite Nanocrystals. ACS PHOTONICS, v. 10, n. 5, p. 7-pg., 2023-04-20. (17/11986-5, 20/06956-2, 22/06267-8, 18/15574-6, 21/13262-0, 18/08988-9, 20/16077-6, 19/22576-8, 21/06893-3, 18/25339-4)

LIU, ALBERT; ALMEIDA, DIOGO B.; CUNDIFF, STEVEN T.; PADILHA, LAZARO A.. Measuring exciton-phonon coupling in semiconductor nanocrystals. ELECTRONIC STRUCTURE, v. 5, n. 3, p. 15-pg., 2023-09-01. (19/22576-8)

LIU, ALBERT; ALMEIDA, DIOGO B.; PADILHA, LAZARO A.; CUNDIFF, STEVEN T.. Perspective: multi-dimensional coherent spectroscopy of perovskite nanocrystals. JOURNAL OF PHYSICS-MATERIALS, v. 5, n. 2, p. 11-pg., 2022-04-01. (19/22576-8)

LIU, ALBERT; NAGAMINE, GABRIEL; BONATO, LUIZ G.; ALMEIDA, DIOGO B.; ZAGONEL, LUIZ F.; NOGUEIRA, ANA F.; PADILHA, LAZARO A.; CUNDIFF, STEVEN T.. Toward Engineering Intrinsic Line Widths and Line Broadening in Perovskite Nanoplatelets. ACS NANO, v. 15, n. 4, p. 8-pg., 2021-03-26. (18/15574-6, 19/22576-8)

MORAL, RAPHAEL F.; GERMINO, JOSE C.; BONATO, LUIZ G.; ALMEIDA, DIOGO B.; THEREZIO, ERALCI M.; ATVARS, TERESA D. Z.; STRANKS, SAMUEL D.; NOME, RENE A.; NOGUEIRA, ANA F.. Influence of the Vibrational Modes from the Organic Moieties in 2D Lead Halides on Excitonic Recombination and Phase Transition. ADVANCED OPTICAL MATERIALS, v. 8, n. 24, OCT 2020. (19/25765-6, 17/11986-5, 13/16245-2, 19/22576-8)

BONATO, LUIZ GUSTAVO; DAL POGGETTO, GUILHERME; MORAL, RAPHAEL FERNANDO; DE CARVALHO VALE, BRENER RODRIGO; GERMINO, JOSE CARLOS; ALMEIDA, DIOGO BURIGO; SANTIAGO, PATRICIA; FERNANDEZ, PABLO SEBASTIAN; TORMENA, CLAUDIO FRANCISCO; PADILHA, LAZARO A.; et al. Photostability of amine-free CsPbBr3 perovskite nanocrystals under continuous UV illumination. JOURNAL OF MATERIALS CHEMISTRY C, v. 11, n. 24, p. 12-pg., 2023-03-06. (20/10246-0, 21/13262-0, 17/11986-5, 20/16077-6, 18/15574-6, 19/22576-8, 19/25765-6, 20/04431-0)

NAGAMINE, GABRIEL; FERREIRA, TOMAS A. C.; ALMEIDA, DIOGO B.; LEMUS, JONATHAN C.; CHANG, JUN HYUK; JEONG, BYEONG GUK; BAE, WAN KI; PADILHA, LAZARO A.. Sample Concentration Affects Optical Gain Results in Colloidal Nanomaterials: Circumventing the Distortions by Below Band Gap Excitation. ACS PHOTONICS, DEC 2021. (18/15574-6, 19/22565-6, 18/25339-4, 19/22576-8)