Banca de DEFESA: ANDRE FELIPE VALE DA FONSECA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : ANDRE FELIPE VALE DA FONSECA
DATE: 16/09/2022
TIME: 14:00
LOCAL: CANAL DO YOUTUBE PPGMQ-MG-UFSJ
TITLE:

Electrochemical characterization of perovskite nanocrystals (CsPbBr3)

KEY WORDS:

perovskite, nanocrystals, electrochemistry, nanomaterials

PAGES: 42
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Química Inorgânica
SUMMARY:

Perovskite nanocrystals (PNCs) have emerged as promising candidates for optoelectronic and photovoltaic applications due to their exceptional optoelectronic properties. A critical problem presented by these nanomaterials is their low chemical stability, and several efforts have been made in order to improve the stability of PNCs. Recently, the coating of the surface of CsPbBr3 perovskite (3D phase) with another phase derived from Cs4PbBr6 perovskite (0D phase) has been evaluated, forming a core-shell system with improved optical properties and greater stability. but little attention has been paid to the charge-extraction properties of the core-shell system, which is continually being reported as promising for applications in optoelectronic and photovoltaic devices. Through a combination of spectroscopic and electrochemical techniques, the electron extraction properties of the 3D and 0D@3D systems were evaluated. Furthermore, a phase change reaction induced by polar solvent was evidenced, confirmed by HRTEM/SAED.

BANKING MEMBERS:
Externo à Instituição - ANTONIO GOMES SOUZA FILHO - UFC
Externa à Instituição - GIOVANNA MACHADO - UFPE
Presidente - 1443844 - MARCO ANTONIO SCHIAVON
Externo à Instituição - PAULO ROBERTO BUENO - UNESP
Externo ao Programa - 1527524 - WAGNER SOUZA MACHADO