製備二氧化鈦與奈米碳管複合光陽極應用於染料敏化太陽能電池

Preparation of TiO2 / Carbon Nanotube Composite Photoanodes for Dye-Sensitized Solar Cells

王師駿(Shih-Chun Wang)

指導教授 ： 吳添全

國立虎尾科技大學/電機資訊學院/電子工程系碩士班/碩士(2017年)

摘要

染料敏化太陽能電池是一種製造成本低、製程容易且具有未來發展性的太陽能電池。而奈米碳管具有良好的導電性、機械性與熱穩定性，非常適合作為太陽能電池的光陽極材料。
　　本研究中，以不同濃度的二氧化鈦/奈米碳管複合物製備成染敏電池，並比較不同濃度的奈米碳管製備的染敏電池特性。接著將奈米碳管進行分散處理，與未分散處理的奈米碳管比較製備成染敏電池的特性差異。最後將二氧化鈦薄膜與二氧化鈦/奈米碳管複合薄膜混合塗布，分析不同塗布順序對染敏電池的特性有何影響。
　　研究結果顯示，奈米碳管可以提供電子直接的傳輸路徑，此路徑能提升電子的傳輸速度，減少電子電洞的再結合。以二氧化鈦/奈米碳管複合薄膜與二氧化鈦薄膜混合塗布所製備的染敏電池，效率最高為4.07%，和二氧化鈦製備的染敏電池相比，效率上升了1%；與只使用二氧化鈦/奈米碳管複合薄膜製備的染敏電池相比，效率也有提升0.53%。

關鍵字

染料敏化太陽能電池 ； 二氧化鈦 ； 奈米碳管 ； 刮刀法

並列摘要

Dye-sensitized solar cells (DSSCs) are low-cost, simple process and promising solar cells. Carbon nanotubes (CNTs) have good electrical conductivity, mechanical and thermal stability, and can be used as the photoanode material for DSSCs. In this study, the DSSCs were fabricated by TiO2/CNTs composites, and compared with the properties of DSSCs which fabricated by different concentrations of carbon nanotubes. Then the carbon nanotubes were dispersed and fabricated into the DSSCs, compared with the DSSCs which fabricated by undispersed carbon nanotubes. Finally, the TiO2 film and the TiO2/CNTs film were mixed coating, and analyzed the effect of different coating sequences on DSSCs. The results indicate that carbon nanotubes can provide a direct transmission pathway for electrons, which can enhance the transmission speed of electron and reduce the electron/hole recombination. The DSSCs fabricated by the TiO2 film and the TiO2/CNTs film had the highest efficiency 4.07%, and compared with the DSSCs which fabricated by the pure TiO2, the efficiency increased by1%. Compared with the DSSCs which fabricated by the TiO2/CNTs film, the efficiency is also increased by 0.53%.

並列關鍵字

dye-sensitized solar cells ； TiO2 ； Carbon nanotubes ； doctor blade method

參考文獻

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