Contact resistance effects in thin film solar cells and thin film transistors

  • Thin film technology is the keystone in the modern applied science and it has been used for several decades in making electronic devices. Recent researches on various thin film solar cells and organic electronic devices have pioneered improvements in performance and miniaturization. As devices further miniaturize, performance of thin film devices suffers as a result of high electrical Ohmic losses which occur. In thin film devices, such as solar cells, radio frequency identification tags (RFID tags) and thin film transistors (TFTs), the main contributor to high parasitic losses is the contact resistance between metal electrodes and active semiconductor materials. Contact resistance effects in electrical devices are undesirable, but unavoidable. The minimization of these effects on a device's functionality has drawn the attention of many researchers from various fields. This thesis has an aim to examine closer contact resistance effects in chalcopyrite thin film solar cells and organic thin film transistors. As new areas of thin film devices continue to expand, new and different materials have been under investigation for the manufacturing of thin film transistors. On account of miniaturizing devices, contact effects have become a prominent factor on a device's performance. Contact effects may reduce the charge carrier mobility of the devices, as well as the switching frequency in thin film transistors. On the other hand, in thin-film photovoltaic industry the process temperature is one of the limiting parameters for the formation of electrical contacts, especially in the case of devices manufactured on plastic substrates. Due to the high contact resistance, conversion efficiency of the thin film solar cells may be reduced.

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Publishing Institution:IRC-Library, Information Resource Center der Jacobs University Bremen
Granting Institution:Jacobs Univ.
Author:Marko Marinkovic
Referee:Dietmar Knipp, Veit Wagner, Werner Bergholz, Helmut Stiebig
Advisor:Dietmar Knipp
Persistent Identifier (URN):urn:nbn:de:101:1-201307119539
Document Type:PhD Thesis
Date of Successful Oral Defense:2013/05/27
Date of First Publication:2013/05/31
PhD Degree:Electrical Engineering
School:SES School of Engineering and Science
Library of Congress Classification:T Technology / TK Electrical engineering. Electronics. Nuclear engineering / TK7800-8360 Electronics
Call No:Thesis 2013/8

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