| Texto completo | |
| Autor(es): |
de Paiva, A. B.
[1]
;
Correr, I, G.
;
Ugucioni, J. C.
[2]
;
Carvalho, G. R.
[3]
;
Jasinevicius, R. G.
[4]
;
de Godoy, M. P. F.
[5]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Univ Fed Sao Carlos, Dept Fis, UFSCar, PA 676, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Fed Lavras UFLA, Dept Fis, Lavras, MG - Brazil
[3] Univ Fed Juiz de Fora UFJF, Dept Fis, Juiz De Fora, MG - Brazil
[4] Univ Sao Paulo, Dept Engn Mecan, Escola Engn Sao Carlos, Sao Paulo, SP - Brazil
[5] Correr, G., I, Univ Fed Sao Carlos, Dept Fis, UFSCar, PA 676, BR-13565905 Sao Carlos, SP - Brazil
Número total de Afiliações: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Synthetic Metals; v. 281, NOV 2021. |
| Citações Web of Science: | 0 |
| Resumo | |
Deep and shallow traps play a fundamental role in the photoresponse profile of organic devices. Here we present an investigation on emeraldine-salt polyaniline films concerning structural, optical, and electrical properties by X-rays diffraction, optical and electron microscopies, and optical spectroscopies as Fourier Transform Infrared Spectroscopy (FTIR), absorption, and photoluminescence (PL). Photoconductivity measurements show signatures related to localized states near-edge absorption and the efficient transition between polaron bands. The photoconductive profile is dependent on the excitation intensity and presents negative photoconductivity (NPC) for higher intensities. A rate equations model attributes the NPC to shallow traps while the increase of response and recovery times are associated with deep traps. (AU) | |
| Processo FAPESP: | 18/25886-5 - Espectroscopia em perovskitas a base de niobatos dopados com terras-raras |
| Beneficiário: | Guilherme Ilario Correr |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |