葡萄糖衍生物凝膠劑在染敏化太陽能電池電解質添加劑的應用

The Application of Sugar-appended Gelators as the Electrolyte Component for Dye Sensitized Solar Cells

姚富鴻(Fu-Hung Yao)

指導教授 ： 曾炳墝 ； 孫世勝

國立中正大學/理學院/化學暨生物化學系/碩士(2015年)

摘要

本碩士論文研究為設計同時具有凝膠能力與氧化還原能力的化合物，並應用於染敏化太陽能電池的電解質。藉由超分子自組裝特性形成凝膠，與具有氧化還原能力的片段搭配，形成複合性質的電解質化合物。

此研究成功合成出化合物ED33與ED79，並以核磁共振光譜與高解析質譜結構做鑑定，並對ED33化合物做了膠體性質測試、吸光範圍鑑定、循環伏特安培法、穿隧式電子顯微鏡、染敏化太陽能電池元件效率測試實驗。

化合物ED33與γ-Butyrolactone(GBL)、Ethanol(EtOH)、Cyclohexane溶劑搭配可以形成膠體，並且吸光範圍不在可見光區，成功達成了預期能夠擁有形成膠體能力的性質，利用穿隧式電子顯微鏡發現化合物ED33與γ-Butyrolactone(GBL)、Ethanol(EtOH) 溶劑搭配形成膠體的結構不同。而在循環伏特安培法實驗了解ED33的氧化還原電位為0.76 V，與[Co(bpy)3]2+ / [Co(bpy)3]3+和Ferrocene0/+氧化還原電位相近。

成功將化合物ED33摻入液態電解質後形成擬固態電解質，並測試化合物ED33不同濃度對太陽能電池光電轉換效率的影響，也測試搭配不同類型染料組成的染敏化太陽能電池，搭配N719染料的染敏化太陽能電池元件，比較液態性質與膠態性質光電轉換效率相差%，而搭配CR147染料的染敏化太陽能電池元件，比較液態性質與膠態性質光電轉換效率相差%。另測試搭配化合物ED33的膠態電解質長效穩定性，經過96小時後效率仍然不減。

關鍵字

添加劑 ； 葡萄糖 ； 電解質 ； 染敏化太陽能電池 ； 膠體

並列摘要

In this thesis, it uses the property of supramolecular gel, adding the compound ED33 to the liquid electrolyte and turning electrolyte into quasi-solid electrolyte. The improvement of the long-term stability for the liquid electrolyte in the dye-sensitized solar cell (DSSC) is in great demand. To achieve this purpose, we introduced a new approach of turning the liquid electrolyte into a quasi-solid by the use of supramolecular gel. Such gel is formed by the self-assembly of our newly designed supramolecules and owns a minimal decrease in the ionic conductivity of the electrolytes.

In this thesis, it has successfully synthesized the compound ED33 and ED79. In addition to identify it with the method of NMR spectroscopy and high-resolution mass spectroscopy, experiments are conducted including the UV-visible absorption spectroscopy, cyclic volt-amperes method, and photoelectric conversion efficiency of dye-sensitized solar cell experiments.

In this thesis, it uses a β-D-glucose-base formation of colloidal properties of the synthetic compounds ED33, make the liquid electrolyte into quasi-solid state electrolyte by disposing it in the electrolyte, and utilize the nature of colloidal to prevent solvent within the electrolyte from evaporation, arrange it in pair with I-/I3- or another redox to form different electrolytic compoents to form DSSC and make a comparison of the performance and long-term stability with it.

並列關鍵字

Gelator ； Component ； Sugar ； Electrolyte ； DSSC

參考文獻

1. Grätzel, M. Nature 2001, 414, 338.

4. Huber, R. Angew. Chem. Int. Ed. Engl. 1989, 28, 848

6. Xu, K. Chem. Rev. 2004, 104, 4303.

8. Wu, J.; Lan, Z.; Lin, J.; Huang, M.; Huang, Y.; Fan, L.; Luo, G. Chem. Rev. 2015, 115, 2136.

9. Hagfeldt, A.; Grätzel, M. Chem. Rev. 1995, 95, 49.