Synthesis and Study of Thieno[3,4-b]pyrazine Based Dyes for Dye Sensitized Solar Cells

• Main Authors: Pin-sian Chen, 陳品嫻
• Other Authors: Jinn-Hsuan Ho
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/46140191712477392914

碩士 === 國立臺灣科技大學 === 化學工程系 === 102 === In this research, a series of organic sensitizers based on thieno[3,4-b]pyraizne has been synthesized for dye-sensitized solar cells (DSSCs). We have used thieno[3,4-b]pyrazine as the additional acceptor in the D-A-π-A system, instead of a D-π-A system. This D-A-π-A system, results in the increase of the maximum absorption band to red light region (620 – 740 nm) due to increasing electron density from donor to acceptor and has better regulation of the electronic energy levels. Six organic dyes synthesized with Suzuki coupling, Stilling coupling and Knoevenagel reaction contain triphenylamine as donor, heteroaryl group as π bridge, thieno[3,4-b]pyraizne and cyanoacrylic acid as acceptors. Use nuclear magnetic resonance spectroscopy (NMR) and mass spectrometry (MASS) to identify the structures and use UV / visible spectroscopy and cyclic potential instrument to discuss the photophyscial and electrochemical properties.