PVDF-HFP/中孔洞二氧化矽複合高分子電解質於染敏太陽能電池之應用

Application of PVDF-HFP/mesoporous silica composite polymer electrolytes on dye-sensitized solar cell

賴彥榤(Yen-Chieh Lai)

指導教授 ： 陳玉惠

中原大學/理學院/化學研究所/碩士(2010年)

https://doi.org/10.6840/cycu201000848

摘要

本研究主要利用Poly(vinylidenefluoride-hexafluoropropylene) (PVDF-HFP)膠化液態電解質形成膠態電解質後，將市售二氧化矽(CS)及中孔洞二氧化矽(MS)分別混摻到高分子電解質中，探討二氧化矽孔洞性對複合高分子電解質之各項性質及其在染料敏化太陽能電池之應用。
利用BET、SEM及TEM分析二氧化矽孔洞大小、表面結構及孔洞結構，並利用SEM、XRD、交流阻抗分析儀、電化學分析儀分析複合高分子電解質之表面型態、結晶性、離子導電度、I3－離子擴散係數及光電轉換效率。
結果顯示，當CS比例增加時，複合高分子電解質孔洞減少，而MS比例增加時，複合高分子電解質孔洞結構未有明顯改變，且MS為不規則高密度孔洞，電解質滲透其中可提高電解質之電性質，其離子導電度、I3－離子擴散係數及光電轉換效率分別為7.24×10－3 S/cm、3.11×10－6 cm2/s及4.08%，其光電轉換效率較P10(η=2.97%)高37%，較P10CS1電解質高6%，甚至高於液態電解質(η=3.74%)10%。

關鍵字

PVDF-HFP ； 膠態電解質 ； 染敏太陽能電池 ； 中孔洞二氧化矽

並列摘要

In this study, poly(vinylidenefluoride-co-hexafluoropropylene)(P(VDF-HFP)) were introduced into to liquid electrolyte to formed the gel electrolyte, and commercials silica (CS) and mesoporous silica (MS) powders were used, separately, as a filler to induced into the gel electrolyet. It is discussed that the properties of composite gel electrolyte and application of dye-sensitized solar cells.
The morphologies and porosity of the silicas were characterized by SEM,TEM and BET measurements. The composite polymer electrolytes wrer investigated by morphologies, crystallinity, ionic conductivity, diffusion coefficient of tri-iodide and light-to-electrical-energy conversion efficiencies.
It was found that presence of the CS were increased, the porosity of composite gel electrolytes were decreased, but P10MSx composite electrolytes were not changed obviously. And MS were disdrdered pore structure, electrolytes would penetrated into pores and increased ionic conductivity, diffusion coefficient of I3－. It exhibited an overall light-to-electrical-energy conversion efficiencies of 4.08 %, which is 37 % higher than the corresponding values of the DSSC fabricated with the electrolyte without MS additive, more then 9% higher than electrolyte under the same condition.

並列關鍵字

PVDF-HFP ； mesoporous silica ； dye-sensitized solar cell ； gel electrolyte

參考文獻

triarylamines and application in dye sensitized solar cells”, Synth.

1 F. Gao, Y. Wang, D. Shi, J. Zhang, M. Wang, X. Jing, R.

the Optical Absorptivity of Nanocrystalline TiO2 Film with High

130, 32, 10720–10728

4 蕭光宏, 二氧化鈦微結構對染料敏化太陽能電池光電效能的影響,