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研究生： 陳英哲
Ying-Zhe Chen
論文名稱： 以4H-cyclopenta[1,2-b:5,4-b‘]dithiophene衍生物為染料敏化太陽能電池的acceptor之D-π-A型敏化劑的分子設計
Molecular design of D-π-A sensitizers based on 4H-cyclopenta[1,2-b:5,4-b']dithiophene derivative as an acceptor for dye sensitized solar cells
指導教授： 何郡軒
Jinn-Hsuan Ho
口試委員: 周大新
Tahsin J. Chow
戴龑
Yian Tai
張家耀
Jia-Yaw Chang
王朝諺
Tiow-Gan Ong
張哲健
Che-Chien Chan
學位類別： 博士
Doctor
系所名稱： 工程學院 - 化學工程系
Department of Chemical Engineering
論文出版年： 2014
畢業學年度： 102
語文別： 英文
論文頁數： 298
中文關鍵詞： 染料敏化太陽能電池 、太陽能電池 、染料 、敏化劑
外文關鍵詞： DSSC, solar cell, dye, sensitizer
相關次數： 點閱：220  下載：2 
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    • Converting solar energy into electricity is generally considered to be the most promising way to solve the energy crisis. A variety of solar cells have been developed in recent years. As potential candidates for the future solar cells, dye-sensitized solar cells (DSSCs) perform considerable efficiency and low cost. The metal-free organic sensitizers have attracted much attention because of their advantages, such as high molar absorption coefficient, simple synthesis procedure, low cost, and environmentally friendly. Therefore, we designed and synthesized six new phenothiazine dyes (14, 16, 21, 23, 25, and 27), utilizing two donors and two acceptors. Finally, the effects of the donor, bridge and acceptor on the photophysical and electrochemical properties of the dyes and the solar cell performance are detailed.

    Converting solar energy into electricity is generally considered to be the most promising way to solve the energy crisis. A variety of solar cells have been developed in recent years. As potential candidates for the future solar cells, dye-sensitized solar cells (DSSCs) perform considerable efficiency and low cost. The metal-free organic sensitizers have attracted much attention because of their advantages, such as high molar absorption coefficient, simple synthesis procedure, low cost, and environmentally friendly. Therefore, we designed and synthesized six new phenothiazine dyes (14, 16, 21, 23, 25, and 27), utilizing two donors and two acceptors. Finally, the effects of the donor, bridge and acceptor on the photophysical and electrochemical properties of the dyes and the solar cell performance are detailed.

    Abstract.................................................................I Acknowledgements.......................................................III Index...................................................................IV Abbreviations...........................................................VI Index of figure.......................................................VIII Index of table...........................................................X Index of scheme.........................................................XI Part 1...................................................................1 1. Introduction..........................................................2 1-1. Types of solar cell.................................................2 1-1-1. Silicon solar cells...............................................3 1-1-2. Compound semiconductor solar cells................................5 1-1-3. Organic solar cells...............................................6 1-2. Structure of dye-sensitized solar cell (DSSC).......................7 1-3. Working principle of dye-sensitized solar cell (DSSC)...............8 1-4. Characterization methods of dye-sensitized solar cell (DSSC).......10 1-5. Type of dye-sensitized solar cell (DSSC)...........................15 1-6. Aim of the study...................................................20 2. Results and Discussion...............................................22 2-1. Synthesis and characterization.....................................22 2-2. Optical properties.................................................25 2-3. Electrochemical properties.........................................27 2-4. Photovoltaic performance...........................................30 3. Conclusion...........................................................32 4. Instrument and Reagents..............................................33 4-1. Instrument.........................................................33 4-2. Reagents and solvents..............................................34 5. Synthesis............................................................36 6. Reference............................................................64 Part 2..................................................................66 1. Introduction.........................................................67 1-1. Organic photochemistry.............................................67 1-2. Photochemistry reaction of stilbene derivatives....................68 1-3. Base-induced photorearrangement of 3-styrylfurans..................70 1-4. Norrish Type 1.....................................................71 1-5. Aim of the study...................................................72 2. Results and Discussion...............................................75 2-1. Synthesis of polyaromatics.........................................75 2-2. Mechanism..........................................................77 2-2-1. Substitution effect of the photoaddition of methanol.............79 2-2-2. The arylethenolate anion of N1 as a good leaving group...........80 2-2-3. E1cB (Elimination Unimolecular conjugate Base) reaction..........81 2-3. The effect of the base.............................................82 3. Conclusion...........................................................85 4. Instruent and Reagents...............................................86 4-1. Instrument.........................................................86 4-2. Reagents and Solvents..............................................87 5. Synthesis............................................................89 5-1. Synthesis of 3-styrylfuran derivatives.............................89 5-2. Procedures for photorearrangement of compound 1....................96 6. Reference...........................................................103 Appendix Part 1........................................................106 Appendix Part 2........................................................215

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