A feasible scalable porphyrin dye for dye-sensitized solar cells under one sun and dim light environments. Issue 30 (13th July 2016)

• Record Type: Journal Article
• Authors: Liu, Yu-Chieh; Chou, Hsien-Hsin; Ho, Feng-Yi; Wei, Hsiang-Jung; Wei, Tzu-Chien; Yeh, Chen-Yu
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 30(2016)
• Page Start: 11878
• Page End: 11887
• Publication Date: 2016-07-13
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6ta04097g
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A new porphyrin dyeY1A1 has been devised for high performance dye-sensitized solar cells under the irradiance of either AM1.5G simulated sunlight or fluorescent/LED based dim light. Abstract : We have devised a new porphyrin dyeY1A1 for photovoltaic applications under both light sources of AM1.5G standard conditions and low light intensity at 300–2400 lux. The dyeY1A1 is tailored with two 3, 5-di- tert -butyl-4-methoxyphenyl groups at meso -10, 20-positions which helps the solubility of the molecule in solvents and avoids involvement of the hazardous chemical n -butyllithium, which is used during the synthesis of some typical high efficiency porphyrins such as YD2- o -C8 and LD-series dyes. The dye is also structurally simple so that large-scale synthesis for future industrial applications becomes feasible. TheY1A1 -based cells were found to exhibit higher performance using I − /I3 − rather than Co 2+/3+ electrolytes in the presence of CDCA co-adsorbent. The addition of Li + additive to the GuSCN-free electrolyte benefits the performance in terms of higher capacitance at the compensation of surface charge recombination and electron lifetime. The optimized cells based onY1A1 showed a power conversion efficiency of 9.22% under AM1.5G conditions and as high as 19.5% when illuminated under 350 lux of LED light.