Study on the polymer solar cells with thermally stable $TiO_x$ protecting layer = 열적안정성을 갖는 타이타늄옥사이드 보호층을 이용한 고분자 태양전지에 관한 연구

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Photovoltaic devices based on polymer materials for renewable electrical power and sustainable energy have been the target of research worldwide and substantial progress in numerous aspects. There are many advantages of polymer solar cells such as low cost, light weight, large area, mechanical flexibility and easy to processability. The aforementioned factors influence the efficiency of photovoltaic cells, the absorption spectrum of the active layer, the morphology, donor and acceptor’s HOMO and LUMO level, film morphologies, charge carrier mobility and the work functions of electrodes. Also the performance of polymer solar cells has been improved by using new materials and new structure in devices. The impact of incorporation of a $TiO_x$ interlayer prepared from a newly designed precursor between the active layer of a polymer solar cell and an Al electrode is reported here. Devices with the $TiO_x$ interlayer prepared from the polymeric precursor shows greatly enhanced thermal stability compared to those with a $TiO_x$ interlayer prepared from titanium isopropoxide, which current the most widely employed precursor for the interlayer. This is attributed to the $TiO_x$ interlayer prepared from the polymeric precursor has relatively fewer reactive sites and undergoing a small morphological change during operation at high temperature, thus resulting in reduced interfacial destruction between Al and the active layer. Hence, it is possible to obtain enhanced cell performance with the $TiO_x$ layer from the polymeric precursor even at high temperature.
Advisors
Park, O-Okresearcher박오옥researcher
Description
한국과학기술원 : 생명화학공학과,
Publisher
한국과학기술원
Issue Date
2009
Identifier
308720/325007  / 020073320
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 생명화학공학과, 2009.2, [ x, 109 p. ]

Keywords

Polymeric $TiO_x$; Interlayer; Polymer solar cell; 폴리머릭 티아오엑스; 삽입층; 고분자 태양전지; Polymeric $TiO_x$; Interlayer; Polymer solar cell; 폴리머릭 티아오엑스; 삽입층; 고분자 태양전지

URI
http://hdl.handle.net/10203/29462
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=308720&flag=dissertation
Appears in Collection
CBE-Theses_Master(석사논문)
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