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Homoepitaxial ZnO Thin Films Fabricated by Using Pulsed-Laser Deposition
Holger von Wenckstern,Matthias Brandt,Heidemarie Schmidt,Christian Hanisch,Gabriele Benndorf,Holger Hochmuth,Michael Lorenz,Marius Grundmann 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.5
ZnO thin films were deposited homoepitaxially by using pulsed-laser deposition on ZnO wafers grown by using the hydrothermal method. The dominant shallow donor level in the nominally undoped thin films is AlZn, as suggested by thermal admittance spectroscopy and low temperature photoluminescence measurements. The homoepitaxial ZnO:P thin films are n-conducting in the as-grown state, which facilitates investigations by Hall effect measurements. The Hall mobility of such ZnO:P thin lms is higher than that of heteroepitaxial ZnO thin lms and its temperature dependence is similar to that of ZnO single crystals grown by seeded chemical vapor transport.
Thies BEINKE,Annabell SCHAMANN,Michael FREITAG,Klaas FELDMANN,Matthias BRANDT 국제이네비해양경제학회 2017 International Journal of e-Navigation and Maritime Vol.6 No.1
The competition of maintenance services in the offshore wind industry is continually increasing. The quality of the services acts as the distinguishing feature in the industry. Furthermore, there are public standards, which lead to the permanent necessity to offer further education and training programs for employees. To meet the requirements for further training in the specific field of application within the offshore wind industry, a gamified e-learning application has been developed and is introduced in this paper. It consists of a complete solution, which contains the automated analysis of service protocols to identify qualification needs, the involvement of service technicians in the generation of learning materials, the preparation, transmission as well as the further development of those materials in accordance with the principles of e-learning. Finally, the solution contains a gamified mobile application for qualification, which is designed to meet the individual learning needs of the service technicians. This concept paper follows a problem-centred approach. Based on the current state of technology and research, the problem and motivation are identified and the urgency is verified. Furthermore, a detailed specification of the solution and a first implementation approach is presented.