Synthesis and characterization of triphenylamine-based organic dyes for dye-sensitized solar cells

• Published in: Synthetic metals Vol. 160; no. 19; pp. 2143 - 2150
• Main Authors: Heo, Jihyun, Oh, Jin-Woo, Ahn, Ho-Ik, Lee, Su-Bin, Cho, Sang-Eun, Kim, Mi-Ra, Lee, Jin-Kook, Kim, Nakjoong
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.10.2010; Elsevier
• Subjects: Applied sciences; Bandgap energy; Chemistry; Conversion; Density; Dye; Dyes; Electric potential; Energy; Exact sciences and technology; Heterocyclic compounds; Heterocyclic compounds with o, s, se, te hetero atom and condensed derivatives; HOMO; LUMO; Natural energy; Organic chemistry; Photocurrent; Photovoltaic cells; Photovoltaic conversion; Preparations and properties; Simulation; Solar cell; Solar cells; Solar cells. Photoelectrochemical cells; Solar energy; Synthesis; Voltage; Solar cell; HOMO; LUMO; Dye; Synthesis; Bandgap energy; Dye-sensitized solar cell; Organic dye; Conversion rate; Amplitude modulation; Fill factor; Open circuit voltage; Short circuit; Polycyclic aromatic amines; Energy conversion; Optoelectronic device; Chemical synthesis; Photoelectric current; Acrylic acid derivatives
• ISSN: 0379-6779; 1879-3290
• DOI: 10.1016/j.synthmet.2010.08.001

We synthesized three organic dyes (DYE 1, DYE 2, and DYE 3) containing triphenylamine (TPA) moieties as electron donors and cyanoacrylic acid moieties as electron acceptors, designed at the molecular level, and developed them for use in dye-sensitized solar cells (DSSCs). Among all the dyes, DYE 2 exhibited the highest overall solar-energy-to-electricity conversion efficiency of 4.06% with a short-circuit photocurrent density of 11.15 mA cm −2, an open-circuit voltage of 0.64 V, and a fill factor of 0.57 under AM 1.5 irradiation with 100 mW cm −2 simulated sunlight. The results indicate that the organic dyes are promising in the development of DSSC.