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Characterization of n-ZnO/p-GaN Heterojunction for Optoelectronic Applications

100%

Wachnicki L., Gieraltowska S., Witkowski B., Figge S., Hommel D., Guziewicz E., Godlewski M.

Acta Physica Polonica A

2013

vol. 124

issue 5

869-872

An important feature of zinc oxide and gallium nitride materials are their similar physical properties. This allows to use them as a p-n junction materials for applications in optoelectronics. In earlier work we presented use of ZnO as a transparent contact to GaN, which may improve external efficiency of LED devices. In this work we discuss properties of a n-ZnO/p-GaN heterostructure and discuss its optimization. The heterostructure is investigated by us for possible applications, e.g. in a new generation of UV LEDs or UV light detectors.

Schottky Junctions Based on the ALD-ZnO Thin Films for Electronic Applications

68%

Krajewski T., Luka G., Smertenko P., Zakrzewski A., Dybko K., Jakiela R., Wachnicki L., Gieraltowska S., Witkowski B., Godlewski M., Guziewicz E.

Acta Physica Polonica A

2011

vol. 120

issue 6A

A-17-A-21

The ZnO-based Schottky diodes revealing a high rectification ratio may be used in many electronic devices. This paper demonstrates several approaches to obtain a ZnO-based Schottky junction with a high rectification ratio. The authors tested several methods such as: post-growth annealing of the ZnO layer, acceptor (nitrogen) doping, as well as the ZnO surface coating with a properly chosen dielectric material. The influence of these approaches on the diode's rectification ratio together with modeling based on the differential approach and thermionic emission theory are presented.

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2 Acta Physica Polonica A

1 2013

1 2011

2 Gieraltowska S.

2 Godlewski M.

2 Guziewicz E.

2 Wachnicki L.

2 Witkowski B.

1 Dybko K.

1 Figge S.

1 Hommel D.

1 Jakiela R.

1 Krajewski T.

1 Luka G.

1 Smertenko P.

1 Zakrzewski A.

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Characterization of n-ZnO/p-GaN Heterojunction for Optoelectronic Applications

Schottky Junctions Based on the ALD-ZnO Thin Films for Electronic Applications