Chemnitz, Techn. Univ., Studienarb., 1995. / Archiviert als Projektarbeit.

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Chemnitz-Zwickau, Techn. Univ., Studienarb., 1996. / Archiviert als Projektarbeit.

Stuttgart, Univ., Diplomarbeit, 2006.

Describing the light-to-energy conversion in OSCs requires a multiscale understanding of the involved optoelectronic processes, i.e., an understanding from the molecular, intermolecular, and aggregate perspective. This thesis presents such a multiscale description to provide insight into the processes in the vicinity of the organic::organic interface, which are crucial for the overall performance of OSCs. Light absorption, exciton diffusion, photoinduced charge transfer at the donor-acceptor interface, and charge separation are included. In order to establish structure-property relationships, a variety of different molecular p-type semiconductors are combined at the organic donor-acceptor heterojunction with fullerene C60, one of the most common acceptors in OSCs. Starting with a comprehensive analysis of the accuracy of diverse ab initio, DFT, and semiempiric methods for the properties of the individual molecules, the intermolecular, and aggregate/device stage are subsequently addressed. At all stages, both methodological concepts and physical aspects in OSCs are discussed to extend the microscopic understanding of the charge generation processes. / Um die Umwandlung von Licht zu Strom in organischen Solarzellen zu verstehen, müssen die beteiligten optoelektronischen Prozesse sowohl auf molekularem als auch auf intermolekularem und auf dem Aggregatniveau beschrieben werden. Diese Arbeit stellt eine solche mehrstufige Beschreibung dar, um zum grundlegenden Verständnis derjenigen Prozesse am organisch::organischen Interface beizutragen, die für die finale Gesamtleistung der Zelle ausschlaggebend sind. Dabei werden die wesentlichen Schritte von der Lichtabsorption und Exzitonendiffusion über den photoinduzierte Charge-Transfer-Schritt am Donor-Akzeptor-Interface bis hin zur endgültigen Ladungstrennung berücksichtigt. Um auf Struktur-Eigenschafts-Beziehungen rückschließen zu können, wurden verschiedene molekulare p-Halbleiter in der heterojunction mit Fulleren C60 kombiniert, einem der gängigsten Akzeptoren in organischen Solarzellen. Nach einer umfangreichen Bewertung der Eignung verschiedener ab initio und semiempirischer Methoden sowie diverser DFT-Funktionale für die Beschreibung der molekularen Eigenschaften wurden intermolekulare und Aggregataspekte diskutiert. Auf allen Ebenen, d.h. auf der molekularen, intermolekularen und auf der Aggregatebene, stehen sowohl methodische Ansätze als auch grundlegendende photophysikalische Überlegungen im Mittelpunkt, um das mikroskopische Verständnis der Ladungsträgererzeugung in organischen Solarzellen zu erweitern.

Techn. Hochsch., Diss.--Aachen, 2006.

University of Stellenbosch Business School / Thesis (MBA)--Stellenbosch University, 2012. / ENGLISH ABSTACT: The purpose of this research is to gain insight into the personalities of marketers and to identify a benchmark personality profile for a marketer in professional service industries. In order to accomplish this, the personality traits required when performing the general marketing role, as well as the personality tests to measure the identified traits, were investigated. A best-fit profile was then selected by matching these traits. The variations in the marketing role between the professional services and the goods industry were then investigated in order to adapt the profile for the specific traits required by professional service industries. The Myers Briggs Type Indicator and 16 Personality Factor scales were identified as the main tests and selected to measure the desired traits for the profile. Additional tests were identified to test for high levels of creativity, high levels of tolerance for ambiguity, strong internal locus of control, high need for achievement, high levels of emotional intelligence and entrepreneurial spirit. When comparing the traits required by the boundary spanning, entrepreneurial role of marketers inside organisations, with the descriptions of each of the 16 Myers Briggs types, the Extrovert, Instinctive, Thinking, Perceiving (ENTP) type was identified as the best-fit profile. A corresponding 16PF profile was constructed and compared using correlations between the two scales. No clashing personality traits could be identified when investigating the mainly relational marketing role requirements of the professional services industries. Replacement of the ENTP type was therefore not justified. Additional traits related to ‘loyalty’ and ‘trust’ were added as further advantages and an investigation into the Myers Briggs type theory identified ways of evaluating it. The subsequent theoretical profile and descriptions were then sent to experienced and practised marketers in the professional services industry, asking them to provide feedback regarding the personality traits of the theoretical profile and the methods followed. Feedback was provided by means of a Likert scale multiple-choice survey that was hosted online as well as private email conversations. The feedback was mostly positive and responses corresponded with the theoretical model with the exception of two specific personality traits of the 16PF in question that opposed the model. Personality tests can serve as a starting point for constructive discussions of individual behaviour and performance of current employees. These tests can be used for coaching, career counselling, conflict resolution, team and organisational development and to predict employee-role "fit". The tests and results can help provide a framework for assessing the ways that different individual personalities contribute to the behaviours that impact performance in the workplace.

Stuttgart, Univ., Fakultät Informatik, Studienarb.

Master-Arbeit Univ. St. Gallen, 2009.

Master-Arbeit Univ. St. Gallen, 2009.