紫質和菌綠素應用於染料敏化太陽能電池之研究

Porphyrin- or Bacteriochlorin-sensitized Solar Cell Studies

林士堯(Shr-Yau Lin)

指導教授 ： 林敬堯

國立暨南國際大學/科技學院/應用化學學系/碩士(2017年)

摘要

本論文主要工作為染料敏化太陽能電池研究，所使用的染料為本實驗室所合成的之紫質染料與菌綠素染料。本論文分成兩個部分，第一部分主要探討染料使用不同錨定基之穩定度與效率影響，新染料化學結構是以本實驗室所發表的紫質染料 LD14 為主體來變更錨定基的部分，LD14 使用的錨定基為羧酸，代號 LWP24 的染料是將錨定基修飾成 pyridine。LWP25 是將錨定基改成 hydroxamic acid。LWP26 則是將錨定基改成 acetylacetone (acac)。此系列最佳化後效率為 LD14 (8.83 %) > LWP25 (5.45 %) > LWP24 (3.11 %) > LWP26 (2.09 %)。雖然 LWP25 效率比 LD14 差，但是實驗顯示 LWP25 在酸鹼環境下有較佳的吸附能力。
第二部分為菌綠素 LS-01、LS-11 與紫質 LD14 之共敏化實驗，使用 stepwise之吸附方法，將兩種吸光範圍不同的染料共吸附到二氧化鈦上。結果顯示元件 IPCE 光譜延可以伸至 800 nm 以上，但 IPCE 光譜在 500 ~ 600 nm 部分沒有上升的趨勢且整體 IPCE 下降了許多，導致短路電流值也有跟著下降的趨勢，進而影響光電轉換效率，LS-01+LD14 效率為 6.09 %，LS-11+LD14 效率為 5.88 %，共敏化後效率沒有達到超過單一染料 LD14 (8.96 %) 的目標。

關鍵字

染料敏化太陽能電池 ； 紫質染料 ； 菌綠素染料 ； 共敏化

並列摘要

This thesis studies to dye-sensitized solar cells. The first part investigates the effect of different anchoring group on the stability and efficiency of the porphyrins. The new dyes are based on a reported dye LD14 with a variety of anchoring groups. For the LWP24 dye, pyridine is used as the anchoring group. For the LWP25 dye, hydroxamic acid is used as the anchoring group. For the LWP26 dye, acetylacetone (acac) is used as the anchoring group. The results show a trend of LD14 (8.83 %) > LWP25 (5.45 %) > LWP24 (3.11 %) > LWP26 (2.09 %). Although not as efficient as LD14, LWP25 displays a better stability under acidic or basic environment.
The second part studies co-sensitization of bateriochlorin dyes (LS-01, LS-11) with a porphyrin dye LD14. Although the IPCE spectrum of the devices reaches up to 800 nm, the spectrum lacks responses in the 500 ~ 600 nm region. As a result, co-sensitized device current value is reduced and the efficiency is also reduced. LS-01/LD14 overall efficiency of 6.09%, and LS-11/LD14 efficiency of 5.88%. The efficiency of the co-sensitization can not exceed LD14 (8.96%).

並列關鍵字

dye-sensitized solar cells ； porphyrins ； bacteriochlorins ； co-sensitization

參考文獻

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