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Polímeros π-conjugados e suas aplicações

Polímeros π-conjugados e suas aplicações

Mouhamed Bouachrine / Mourad Chemek

65,43 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Química física
ISBN:
9786200761033
65,43 €
IVA incluido
Disponible

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Sobre IBD

É evidente que nas duas últimas décadas do século XX se assistiu a um desenvolvimento altamente promocional na procura de novos materiais, na esperança de substituir os semicondutores inorgânicos. Assim, os polímeros orgânicos parecem ser bons candidatos devido à sua baixa queda, leveza e flexibilidade destes materiais, aliados a propriedades optoelectrónicas interessantes e escaláveis. No entanto, os componentes electrónicos baseados nestes novos materiais são ainda incompetentes em comparação com os componentes optoelectrónicos baseados em materiais inorgânicos. Para melhorar o desempenho dos OLED, o poli (N-vinilcarbazole) (PVK) foi utilizado em estruturas multicamadas em que a camada ativa é um polímero conjugado. A utilização de PVK melhorou a eficiência quântica da eletroluminescência e aumentou o sinal emitido. Foram também desenvolvidas camadas activas formadas pela mistura de PVK com um polímero conjugado luminescente. A utilização de PVK nestes materiais de mistura resultou em OLEDs de melhor desempenho com uma eficiência quântica incomparavelmente mais elevada do que os OLEDs baseados apenas em polímeros conjugados.

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