Propriedades de camadas ativas baseadas em perovskita, rubreno e polímero MEH-PPV com aplicação em células solares híbridas

• Autor(a) principal: Silva, Ramon Miranda
• Data de Publicação: 2017
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/7977
• topic: Camada ativa; Fluorescência; Rubreno; MEH-PPV; Perovskita; Active layer; Fluorescence; Perovskite; CIENCIAS EXATAS E DA TERRA::QUIMICA

Organic semiconductor molecules and polymers have been widely studied because they have morphological and electroluminescent properties that contribute in particular to the development of new photovoltaic systems. Among the most promising properties for this application are the high efficiency in the production of load carriers, good conductivity, ease of manipulation and low cost syntheses, therefore to know the capacity of the active layers for the production of load carriers and the way they operate in a device, is essential to determine the application and the advantages that a material can bring to the photovoltaic systems. In this work we aimed to determinethe photophysical and morphological characteristics of the combination of an electroluminescent polymer MEH-PPV (Poly [2-methoxy-5- (2- ethylhexyloxy) -1,4-phenylenevinylene]), an organic electroluminescent molecule, Rubene (5,6,11,12-tretaphenylnaphthacene) and a hybrid Perovskite semiconductor (CH3NH3SnI_Cl2 and CH3NH3SnI2_Cl), which, when deposited as thin films on the anode of ITO (Tin-doped Indium Oxide), have their new characteristics studied and the combination can be proposed as an active layer for the production of hybrid solar cells based on perovskite. Based on the evaluation of the photophysics of the isolated materials and in solution, thin films layer-by- layer were prepared by two techniques, self-assembly and spin-coating, where their morphological and photophysical characteristics were evaluated. The properties of the active layer composed of the combination of the components were evaluated and the most promising results were obtained for the perovskite composition containing MEH_PPV deposited in a monolayer by the spin-coating technique.