Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/28191
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dc.titleA Systematic Study on Bulk Heterojunction Solar Cells from PQT-12
dc.contributor.authorPARDHASARADHI VEMULAMADA
dc.date.accessioned2011-11-08T18:01:38Z
dc.date.available2011-11-08T18:01:38Z
dc.date.issued2008-06-02
dc.identifier.citationPARDHASARADHI VEMULAMADA (2008-06-02). A Systematic Study on Bulk Heterojunction Solar Cells from PQT-12. ScholarBank@NUS Repository.
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/28191
dc.description.abstractBlends of regioregular poly(3,3b b b -didodecyl quaterthiophene) (PQT-12) with (6,6)-phenyl-C71-butyric acid methyl ester (C70PCBM) were investigated as active layers for application in organic photovoltaics (OPV). By careful control of the PQT-12:C70PCBM composition ratio, solvent selection, spinning speed and annealing temperatures, power conversion efficiency (PCE) of 1.4% could be obtained, even though this is the first effort in employing PQT-12:C70PCBM for a solar cell. Effects of different variables on the incident photon conversion efficiency (IPCE), short circuit density (Jsc) and open circuit voltage (Voc) were presented. Absorption spectra, Photoluminescence, Atomic force microscopy and X-ray diffraction studies were used to understand the effect of these variables on device performance. The observed trend in PCE was explained on the basis of the balance between free charge carriers generation and transport with in the device. Use of an inorganic acceptor (CdS) was also investigated to make use of its better stability compared to C70PCBM.
dc.language.isoen
dc.subjectPQT-12, C70PCBM, Bulk heterojunction solar cells, CdS, Spin coating, Organic solar cells
dc.typeThesis
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.contributor.supervisorGONG HAO
dc.description.degreeMaster's
dc.description.degreeconferredMASTER OF ENGINEERING
dc.identifier.isiutNOT_IN_WOS
Appears in Collections:Master's Theses (Open)

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