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1 Materials Science Poland

1 2013

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Electro-optical properties of diluted GaAsN on GaAs grown by APMOVPE

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Kamyczek P. , Biegański P. , Płaczek-Popko E. , Zielony E. , Gelczuk Ł. , Sciana B. , Pucicki D. , Radziewicz D. , Tlaczala M. , Kopalko K. , Dabrowska-Szata M.

Materials Science Poland

2013

tom Vol. 31, No. 4

595--600

In this paper we report on the optical and electrical studies of single GaAs1-xNx epitaxial layers grown on GaAs substrates by means of atmospheric pressure metal organic vapour phase epitaxy (APMOVPE). Three kinds of samples with 1.2 %, 1.6 % and 2.7 % nitrogen content were studied. Optical properties of the layers were investigated with the use of room temperature transmittance and reflectance measurements. Subsequently Schottky Au–GaAs1-xNx contacts were processed and characterized by current-voltage (I-V) and capacitance-voltage (C-V) measurements within 80 – 480 K temperature range. From the I-V and C-V characteristics the ideality factor, series resistance and built-in potential were determined. Obtained diodes can be used for further studies on defects with the use of DLTS method.