Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/1340
Título: Enhanced short wavelength response in laser-scanned-photodiode image sensor using an a-SiC : H/a-Si : H tandem structure
Autor: Fantoni, Alessandro
Louro, Paula
Fernandes, Miguel
Vieira, Maria Manuela Almeida Carvalho
Lavareda, G.
Carvalho, C. N. de
Palavras-chave: a-Si : H
Numerical simulation
Heterostructures
Tandem cell
Simulation
Data: 23-Set-2005
Editora: Elsevier Science SA
Citação: Fantoni A, Louro P, Fernandes M, Vieira M, Lavareda G, Carvalho C N. Enhanced short wavelength response in laser-scanned-photodiode image sensor using an a-SiC : H/a-Si : H tandem structure.Sensors and Actuators A-Physical. 2005; 123-24: 343-348.
Relatório da Série N.º: 123-124
Resumo: We report in this paper the recent advances we obtained in optimizing a color image sensor based on the laser-scanned-photodiode (LSP) technique. A novel device structure based on a a-SiC:H/a-Si:H pin/pin tandem structure has been tested for a proper color separation process that takes advantage on the different filtering properties due to the different light penetration depth at different wavelengths a-SM and a-SiC:H. While the green and the red images give, in comparison with previous tested structures, a weak response, this structure shows a very good recognition of blue color under reverse bias, leaving a good margin for future device optimization in order to achieve a complete and satisfactory RGB image mapping. Experimental results about the spectral collection efficiency are presented and discussed from the point of view of the color sensor applications. The physics behind the device functioning is explained by recurring to a numerical simulation of the internal electrical configuration of the device.
Peer review: yes
URI: http://hdl.handle.net/10400.21/1340
ISSN: 0924-4247
Aparece nas colecções:ISEL - Eng. Elect. Tel. Comp. - Artigos

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