Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/71732
Título: | SnOx and a-Si thin-films based photodiode in a flexible substrate for visible spectral region |
Autor(es): | Esteves, Bruno Pimenta, Sara Vieira, E. M. F Freitas, João R. Rodrigues, José A. Correia, J. H. |
Palavras-chave: | Thin-films Physical vapour deposition Thermoelectric phenomenon X-ray diffraction analysis Optical characterization |
Data: | Mar-2021 |
Editora: | Elsevier |
Revista: | Materials Letters |
Resumo(s): | Thin-films based photodiodes are an advantageous alternative to the photodetectors based on semiconductor doping processes, especially in optical sensors implemented on non-semiconductor substrates. This is the first report of a p-i-n junction photodiode, based on n-SnOx/p-SnOx and amorphous silicon (a-Si) thin-films, fabricated in a polymeric, flexible and photosensitive substrate, only considering different annealing conditions and thicknesses of evaporated metallic Sn and sputtered a-Si. Seebeck coefficient measurements were performed, using a custom-built setup, to assess the implementation of n- and p-type thin-films. The obtained Seebeck coefficients were −167 µV/K and +266 µV/K for the n-SnOx and p-SnOx, respectively. X–ray diffraction (XRD) analysis also confirmed the deposition of an a-Si thin-film as the intrinsic layer of the p-i-n junction. The photodiode responsivity and response times were measured, using a custom-built optical setup for the visible spectral region. The measured responsivity (at 0 V reverse bias) was 2.8 µA/W at 572 nm and the rise and fall times were 0.203 s and 0.312 s, respectively. The developed photodiode provides a promising solution for high level light detection applications in flexible optical sensors. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/71732 |
DOI: | 10.1016/j.matlet.2020.129251 |
ISSN: | 0167-577X |
Versão da editora: | https://www.sciencedirect.com/science/article/pii/S0167577X20319595 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | DEI - Artigos em revistas internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Materials letters2021.pdf Acesso restrito! | 641,78 kB | Adobe PDF | Ver/Abrir |