TITLE

Titanium suboxide as an optical spacer in polymer solar cells

AUTHOR(S)
Roy, Anshuman; Sung Heum Park; Cowan, Sarah; Ming Hong Tong; Shinuk Cho; Kwanghee Lee; Heeger, Alan J.
PUB. DATE
July 2009
SOURCE
Applied Physics Letters;7/6/2009, Vol. 95 Issue 1, p013302
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The use of a layer of titanium suboxide (TiOx) between the bulk heterojunction (BHJ) thin film and the metal contact in “plastic” solar cell has been shown to increase both the short-circuit current and the fill factor. Using a combination of optical modeling and device experiments, we clarify the role of the TiOx layer as an optical spacer. For an appropriate choice of the BHJ thickness and composition, the TiOx layer can enhance the absorption within the active layer, thereby increasing the photocurrent and the power conversion efficiency.
ACCESSION #
43158464

 

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