Eletronic response of photodiode coupled to a boron thin film
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2017
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60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS
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A portable thermal neutron detector is proposed using a silicon photodiode coupled
to a boron thin film. The aim of this work was to verify the effect in the electronic
response of this specific photodiode due to boron deposition, since the direct
deposition of boron in the semiconductor surface could affect its electrical properties
specifically the p-type layer that affects directly the depletion region of the semiconductor
reducing the neutron detector efficiency count. Three boron depositions with
different thickness were performed in the photodiode (S3590-09) surface by pulsed
laser deposition and the photodiode was characterized, before and after the deposition
process, using a radioactive americium source. Energy spectra were used to
verify the electronic response of the photodiode, due to the fact that it is possible to
relate it to the photopeak pulse height and resolution. Spectra from the photodiode
without and with boron film deposition were compared and a standard photodiode
(S3590-04) that had the electronic signal conserved was used as reference to the
pulse height for electronics adjustments. The photopeak energy resolution for the
photodiode without boron layer was 10.26%. For the photodiode with boron deposition
at different thicknesses, the resolution was: 7.64% (0.14 m), 7.30% (0.44
m) and 6.80% (0.63 m). From these results it is possible to evaluate that there
was not any degradation in the silicon photodiode.
Como referenciar
COSTA, P.; COSTA, F.E.; RAELE, M.P.; ZAHN, G.; GERALDO, B.; VIEIRA JUNIOR, N.D.; SAMAD, R.E.; GENEZINI, F.A. Eletronic response of photodiode coupled to a boron thin film. In: 60 YEARS OF IEA-R1: INTERNATIONAL WORKSHOP ON UTILIZATION OF RESEARCH REACTORS, November 28 - December 01, 2017, São Paulo, SP. Abstract... São Paulo, SP: Instituto de Pesquisas Energéticas e Nucleares, 2017. p. 56-56. Disponível em: http://repositorio.ipen.br/handle/123456789/28753. Acesso em: 13 Feb 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.