Correlating reduced fill factor in polymer solar cells to contact effects

Gupta, Dhritiman ; Bag, Monojit ; Narayan, K. S. (2008) Correlating reduced fill factor in polymer solar cells to contact effects Apllied Physics Letters, 92 (9). 093301_1-093301_3. ISSN 0003-6951

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Official URL: http://apl.aip.org/resource/1/applab/v92/i9/p09330...

Related URL: http://dx.doi.org/10.1063/1.2841062

Abstract

A probable limiting factor for efficiency and fill factors of organic solar cells originates from the cathode-polymer interface. We utilize various forms of cathode layer such as Al, Ca, oxidized Ca, and low melting point alloys in model systems to emphasize this aspect in our studies. The current-voltage (JV) response in the fourth quadrant indicates a general trend of convex shaped JV characteristics (d2J/dV2>0) for illuminated devices with good cathode-polymer interfaces and linear or concave JV responses (d2J/dV2 <0) for inefficient cathode-polymer interfaces.

Item Type:Article
Source:Copyright of this article belongs to American institute of physics.
Keywords:Aluminium; Bismuth Alloys; Calcium; Calcium Compounds; Cathodes; Indium Alloys; Lead Alloys; Polymer Blends; Solar Cells; Tin Alloys
ID Code:60019
Deposited On:08 Sep 2011 10:08
Last Modified:18 May 2016 10:21

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