Photocurrent spectral responses in poly (2,5-dimethoxy-p-phenylenevinylene) devices

Narayan, K. S.; Gautam, Khyati; Shivkumar, B.; Ramakrishnan, S.

doi:10.1016/0379-6779(96)80208-6

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…The most promising candidates to replace the inorganic semiconductors in the assembly of solar cells are organic materials, due to their photosensitivity and photovoltaic effects. Among these, we have conjugated polymers, 11,101 organic molecules, 17 liquid crystals 102 and self-assembled organic semiconductors. 103 Conducting polymers are considered as an alternative for the following reasons: (i) semiconducting properties, as evidenced in a number of reports on solid state devices, such as Schottky barrier devices, 104 electroluminescent displays 105 and field effect transistors; 106,107 (ii) formation of oxidized polymer upon irradiation, due to electron injection into solution; (iii) easy production in the form of thin films with variable thickness; (iv) good environmental stability and (v) high hole mobility.…”

Section: Photoelectrochemical Cellsmentioning

confidence: 99%

Electrochemistry, polymers and opto-electronic devices: a combination with a future

Paoli

Gazotti

2002

J. Braz. Chem. Soc.

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A eletroquímica surgiu quando Volta combinou um conjunto de materiais, montando um dispositivo chamado "pilha". Sob este ponto de vista, nada mais natural do que continuar observando a eletroquímica como uma poderosa ferramenta para montar dispositivos usando diversas combinações de materiais. Recentemente, os polímeros surgiram como uma alternativa para produzir dispositivos de baixo peso, substituindo os eletrodos metálicos. Assim, existem no mercado eletrodos transparentes baseados em vidro ou poli(tereftalato de etileno), recobertos com óxidos condutores. Também se desenvolveram eletrólitos baseados em polímeros, que funcionam na ausência de solventes. Os polímeros condutores, ou eletroativos, também surgiram como alternativa para se modificar a superfície destes eletrodos, produzindo respostas de forma controlada, com grandes vantagens sobre os óxidos de metais de transição. Neste cenário, pretende-se mostrar como a combinação de diversos materiais poliméricos pode levar à obtenção de dispositivos eletrocrômicos, células fotoeletroquímicas e células eletroquímicas emissoras de luz. Electrochemistry came into life with the invention of the pile, by Volta in 1800. He combined different metal discs with a piece of tissue, swollen with an aqueous salt solution. The so-called Pila di Volta used a polymer for the first time in an electrochemical device and can be seen as a powerful idea to create new devices. Recently, polymers became an alternative to make thin and flexible devices. Thus, we find transparent plastic electrodes based on poly(ethylene terephtalate) coated with a transition metal oxide. There are also polymer electrolytes based on complexes of inorganic salts and poly(ethylene oxide) derivatives, with reasonable ionic conductivity in the absence of solvents. Finally, the electroactive polymers are efficient substitutes for the inorganic semiconductors because they can be synthetically tailored to produce the desired electronic answer. Combining these materials it is possible to assemble different types of electro-optical devices, like electrochromic, photoelectrochemical and light-emitting electrochemical cells.

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