Betalain pigments as natural photosensitizers for dye-sensitized solar cells: The effect of dye pH on the photoelectric parameters

被引：48

作者：

Isah K.U. ^{[1
]}

Ahmadu U. ^{[1
]}

Idris A. ^{[1
]}

Kimpa M.I. ^{[1
]}

Uno U.E. ^{[1
]}

Ndamitso M.M. ^{[2
]}

Alu N. ^{[1
]}

机构：

[1] Department of Physics, Federal University of Technology, Minna

[2] Department of Chemistry, Federal University of Technology, Minna

[3] Physics Advanced Laboratory, Sheda Science and Technology Complex Sheda, Abuja

来源：

Materials for Renewable and Sustainable Energy | 2015年 / 4卷 / 01期

关键词：

Bougainvillea glabra; Dye sensitizer; Dye-sensitized solar cell; PH;

D O I：

10.1007/s40243-014-0039-0

中图分类号：

学科分类号：

摘要：

Dye-sensitized solar cells (DSSC) were fabricated using red bougainvillea glabra flower dye extracts as natural dye sensitizers at three dye pH values of 1.23, 3.0, and 5.7. Water was used as dye-extracting solvent. DSSCs from dye extract of pH 3.0 had the highest photocurrent density J sc of 3.72 mA/cm2 and fill factor FF of 0.59. While the DSSCs from dye sensitizer pHs of 1.23 and 5.7 had J sc of 1.13 and 2.27 mA/cm2, and fill factors of 0.43 and 0.61, respectively. The maximum powers P max of the DSSCs were 0.50, 1.64, and 0.94 mW/cm2 for dye sensitizer pH of 1.2, 3.0, and 5.7, respectively. © 2014 The Author(s).

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