Procedendo o trabalho realizado nesta pesquisa, sugere-se:
Medidas de DRX in situ, em função do tempo de tratamento térmico; Análise comparativa com método de síntese em uma etapa;
A síntese em diferentes velocidades de rotação, verificando a influência da espessura nas propriedades do filme;
A síntese com diferentes tempos e temperaturas de tratamento térmico;
A síntese do material em ambiente controlado (glove box), avaliando a influência da umidade no processo de formação da perovskita; Realizar uma análise aprofundada da influência do tratamento térmico
na taxa de evaporação do solvente DMF no filme de PbI2;
Realizar um mapeamento bidimensional da superfície dos filmes por perfilometria, verificando a uniformidade dos filmes;
Produção de dispositivos fotovoltaicos e fotodetectores; A caracterização elétrica dos dispositivos fabricados.
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APÊNDICEA-Análises de Perfilometria e Microscopia Óptica.
Tabela 3 - Conjunto amostral utilizado para análises de perfilometria e microscopia óptica, com respectivos valores da espessura dos filmes obtidos.
Amostra Quantidade depositada (L) [PbI2:MAI] (M:M) Spin Coating (rpm/s) TT 1ª etapa (°C/min) TT 2ª etapa (°C/min) Espessura média (nm) F1 75 1:0,25 1500/30 - - 720 F2 75 1:0,25 1500/30 - 100/10 746 F3 75 1:0,25 1500/30 100/10 - 844 F4 75 1:0,25 1500/30 100/10 100/10 749 F5 75 1:0,25 3500/30 - - 399 F6 75 1:0,25 3500/30 - 100/10 385 F7 75 1:0,25 3500/30 100/10 - 294 F8 75 1:0,25 3500/30 100/10 100/10 353 F9 75 1:0,25 5000/30 - - 433 F10 75 1:0,25 5000/30 - 100/10 443 F11 75 1:0,25 5000/30 100/10 - 424 F12 75 1:0,25 5000/30 100/10 100/10 432
Figura 19 - Medidas de perfilometria das amostras F1 a F12, submetidas a diferentes velocidades de rotação (1500 rpm, 3500 rpm e 5000 rpm).