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A comparison of the electronic and photovoltaic properties of novel twin-anchoring organic dyes containing varying lengths of pi-bridges in dye-sensitized solar cells

Title
A comparison of the electronic and photovoltaic properties of novel twin-anchoring organic dyes containing varying lengths of pi-bridges in dye-sensitized solar cells
Authors
Jo, HJ[Jo, Hyo Jeong]Nam, JE[Nam, Jung Eun]Kim, DH[Kim, Dae-Hwan]Kim, H[Kim, Hyojeong]Kang, JK[Kang, Jin-Kyu]
DGIST Authors
Jo, HJ[Jo, Hyo Jeong]; Nam, JE[Nam, Jung Eun]; Kim, DH[Kim, Dae-Hwan]; Kim, H[Kim, Hyojeong]; Kang, JK[Kang, Jin-Kyu]
Issue Date
2014-03
Citation
Dyes and Pigments, 102, 285-292
Type
Article
Article Type
Article
Keywords
ChromophoresConjugated SystemsConversion EfficiencyDye-Sensitized Solar CellEfficient Electron InjectionIncident Photo-to-Current Conversion EfficienciesInsecticidesMolar Extinction CoefficientOpen Circuit VoltageOrganic DyeOrganic DyesPhenothiazine DyesPhotoelectrochemical CellsPhotosensitizersPhotovoltaic PerformancePi-Conjugated SystemShort-Circuit Photocurrent DensitiesSolar Cells
ISSN
0143-7208
Abstract
Two novel donor acceptor π-conjugated (D-π-A) organic dyes have been engineered as sensitizers for applications in dye-sensitized solar cells. The derivatives of phenothiazine containing different numbers of thiophene units in the chromophore were synthesized to investigate the correlation between the number of π-bridge photovoltaic properties as photosensitizers for dye-sensitized solar cells. The organic dye with dithiophene units exhibited a higher molar extinction coefficient and more efficient electron injection from the dye to TiO2 conduction band leading to an improved light harvesting efficiency. The solar-to-electricity conversion efficiency of 7.3% in the case of the bis(dithienyl) bridged dye with an open-circuit voltage of 0.636 V and short-circuit photocurrent density of 18.692 m A cm-2, deriving from a higher absorption with respect to the mono (2,5-thienyl) containing dye, as conformed by incident photo-to-current conversion efficiency measurements. © 2013 Elsevier Ltd. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2667
DOI
10.1016/j.dyepig.2013.10.032
Publisher
ELSEVIER SCI LTD
Related Researcher
Files:
There are no files associated with this item.
Collection:
Energy Science and EngineeringDiscovery Lab(Batteries & Materials Discovery Laboratory)1. Journal Articles


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