Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/113319
Title: Characterization of high efficiency pseudo bilayer organic solar cells and identification of trap-states with a modified CELIV technique
Authors: LAXMI NARASIMHA SAI ABHINAND THUMMALAKUNTA
Keywords: Organic Solar Cells, CELIV, Pseudo bilayer, PCBM, P3HT, Degradation
Issue Date: 21-Aug-2014
Citation: LAXMI NARASIMHA SAI ABHINAND THUMMALAKUNTA (2014-08-21). Characterization of high efficiency pseudo bilayer organic solar cells and identification of trap-states with a modified CELIV technique. ScholarBank@NUS Repository.
Abstract: Firstly, this thesis investigates a novel Organic Solar Cell (OSC) fabrication technique with the use of a new acceptor material, indene-C60 bisadduct (ICBA). Once the solar cell was fabricated, an investigation was made to find out the reason behind an increased device performance due to annealing. The investigation revealed that the improved performance was due to the heat energy being used up in crystallizing the acceptor material (ICBA) thereby improving the charge transport properties of electrons in the solar cell. Secondly, the thesis also investigates the degradation of polymer OSCs made from poly (3-hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM). It introduces a new transient technique, called the LB-CELIV that can quickly identify trap-states in an OSC. This technique if implemented can act as an efficient prognostic tool that can be industrially used to weed out underperforming solar cells for an inline manufacturing setup.
URI: http://scholarbank.nus.edu.sg/handle/10635/113319
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