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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
Author(s)
Jo, Hyo JeongNam, Jung EunKim, Dae-HwanKim, HyojeongKang, Jin-Kyu
Issued Date
2014-03
Citation
Dyes and Pigments, v.102, pp.285 - 292
Type
Article
Author Keywords
Dye-sensitized solar cellOrganic dyesPhenothiazine dyesPhotovoltaic performancepi-Conjugated system
Keywords
CHARGE-TRANSFERMOLECULAR DESIGNHIGH-EFFICIENCYCOUMARIN DYESPERFORMANCESEMICONDUCTORCONVERSIONLIGHT
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
  • 김대환 Kim, Dae-Hwan
  • Research Interests Solar Cells; 태양전지; Thin Film Deposition; 박막 증착; Atomic Layer Deposition; 원자층 증착; CIGS; CZTS; Sb chalcogenides; 안티모니 칼코지나이드
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Appears in Collections:
Division of Energy & Environmental Technology 1. Journal Articles
Convergence Research Center for Solar Energy 1. Journal Articles

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