Estudo de propriedades optoeletrônicas do composto de coordenação Tb(H3PTC)3

• Ano de defesa: 2020
• Autor(a) principal: Everton Pereira de Andrade
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; Brasil; ICX - DEPARTAMENTO DE FÍSICA; Programa de Pós-Graduação em Física; UFMG
• Palavras-chave em Português: Propriedades ópticas; Matéria condensada; Transporte eletrônico; Optoeletrônica; Fotoluminescência
• Link de acesso: http://hdl.handle.net/1843/38608; https://orcid.org/0000-0002-3686-2732

A new perylene derivative compound with high potential to make a stable white OLED with higher temperatures (until ~700K) was developed. It was done preserving the molecular structure of its precursor, PTCDA, with an easy solvothermal synthesis, enabling large scale production. The Tb(H3PTC)3 have a high luminescence signal and a trilobed structure. This work shows that a film thickness control can be used to select the intended material emission wavelength. Three exciton phenomena were found in photoluminescence (PL) spectra and the time dependent-PL (in 10K - 300K range) and time-decay measurements were analyzed. The results show exciton-phonon interaction and suggests that a trion annihilation is one of the present phenomena. XANES and EXAFS measurements along with DFT calculation show the material molecular structure.