Summary
In this paper the technique of infrared angular spectroscopy applied to the characterization of epitaxial layers of n-type silicon grown on N+ or P+ substrates is illustrated. Some results are reported and discussed concerning films having a free-carrier concentration ranging from 1014 cm−3 to 1017 cm−3 and thickness of the order of 10 μm. A significant comparison with results obtained by other techniques (four-point probe, spreading resistance, C−V plots, etc.) is performed and a few simple conclusions are drawn.
Riassunto
In questo lavoro è illustrata una applicazione della tecnica della spettroscopia angolare nell’infrarosso per caratterizzare film epitassiali di silicio tipo-n cresciuti su substrati N+ o P+. Sono riportati e discussi alcuni risultati concernenti film con concentrazione di portatori liberi nell’intervallo fra 1014 cm−3 e 1017 cm−3 e spessori dell’ordine di 10 μm. Viene effettuato un confronto con risultati ottenuti con altre tecniche (tecnica delle quattro punte, spreading resistance, curve C−V, etc.) e vengono riportate alcune semplici e significative conclusioni.
Резюме
В этой статье техника инфракрасной спектроскопии применяется для определения характеристик эпитаксиальных слоев кремния n-типа, выращенных на N +-или P +-подложках. Приводятся и сообщаются некоторые результаты, касающиеся пленок, имежщих концентрацию свободных носителей в области от 1014 см−3 до 1017 см−3 и толщину порядка 10 мкм. Проводится сравнение с результатами, полученными с помощью других методов.
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Geddo, M., Maghini, D. & Stella, A. Infrared angular spectroscopy characterization of epitaxial layers of n-type silicon grown on N+ or P+ substrates. Nouv Cim D 11, 1773–1784 (1989). https://doi.org/10.1007/BF02459121
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DOI: https://doi.org/10.1007/BF02459121