Optimization of Al/a-SiC:H optical sensor device by means of thermal annealing
dc.contributor.author | Magafas, L. | |
dc.contributor.author | Kalomiros, J. | |
dc.date.accessioned | 2015-06-24T15:49:06Z | |
dc.date.accessioned | 2024-09-27T18:12:39Z | |
dc.date.available | 2015-06-24T15:49:06Z | |
dc.date.available | 2024-09-27T18:12:39Z | |
dc.date.issued | 2007-12 | |
dc.description.abstract | The optimization of optoelectronic properties of Al/a-SiC:H Schottky diodes grown as Al/a-SiC:H/c-Si(n) structures is studied by means of thermal annealing of a-SiC:H thin films. According to the spectral response of the Schottky diodes the measured quantum efficiency, ηmeasured, increases with increasing annealing temperature (400–600 °C), whereas ηmeasured decreases for Ta>600 °C. For Ta=600 °C, optimum material quality of a-SiC:H films is achieved and the spectral response of the Al/a-SiC:H/c-S(n) structures present very high and almost constant values (ηmeasured⩾80%) for the whole range of wavelengths from 500 up to 850 nm. These results show that our Al/a-SiC:H/c-S(n) structures can be very attractive as optical sensors. Diffusion length calculations as well as the mobility by lifetime product (μτ)p of the minority carriers (holes) of a-SiC:H films present a dependence on Ta similar to that of the measured quantum efficiency. Finally, the quantum efficiency of films processed with Ta=675 °C is found to increase when the Al/a-SiC:H/c-S(n) structures are exposed to hydrogen, a result that could be promising for the construction of a hydrogen detection sensor. | en |
dc.format.extent | 6 | el |
dc.identifier.doi | 10.1016/j.mejo.2007.09.016 | |
dc.identifier.other | http://www.sciencedirect.com/science/article/pii/S0026269207002844 | el |
dc.identifier.uri | https://repository2024.ihu.gr/handle/123456789/1455 | |
dc.language.iso | en | el |
dc.publication.category | Απαγόρευση δημοσίευσης - Βιβλιογραφική αναφορά | el |
dc.relation.journal | Microelectronics Journal;Vol. 38, Iss. 12 | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Διεθνές | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject.keyword | Optical sensor | el |
dc.subject.keyword | Schottky diode | el |
dc.subject.keyword | Thermal annealing | el |
dc.subject.keyword | Microelectronics | el |
dc.title | Optimization of Al/a-SiC:H optical sensor device by means of thermal annealing | en |
dc.type | Άρθρο σε επιστημονικό περιοδικό | el |
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