本研究利用共軛高分子Poly(3-hexylthiophene-2,5-diyl) (P3HT)和二維材料混摻形成混摻結構，並探討混摻薄膜和純共軛高分子薄膜在光催化反應中之光電流表現。並比較混摻不同二維材料所造成的光電流之差異。
從我們的實驗中發現，P3HT和石墨烯混摻後能在石墨烯表面貼附，並且透過持溫後P3HT能在石墨烯表面形成特殊的條紋狀結晶。因此，我們以此結構為基礎形成的薄膜進行光電流測量。除此之外，我們也改變薄膜製程，將P3HT和石墨烯以垂直方式堆疊形成垂直混摻薄膜。並分別使用不同方式將石墨烯鋪在P3HT薄膜上。
另一方面，屬於過度金屬二硫化物的二硫化鉬在光催化的產氫領域已有許多研究和應用。其片狀二硫化鉬的邊緣暴露的硫原子可做為產氫反應的活性位點，使得二硫化鉬能夠有效的提升光催化活性。因此，除了混摻石墨烯，我們也將P3HT與二硫化鉬混摻，並比較石墨烯和二硫化鉬的在光催化反應上的表現差異。
最後，我們在實驗中也發現P3HT本身具有良好的光電流表現。因此我們以P3HT為主要目標將其和共軛高分子Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate(PEDOT:PSS)製成雙層薄膜，並測試其光電流的改變。除此之外，我們也進行P3HT薄膜在除氧環境下長時間保存的穩定性實驗，並觀察隨著保存時間的增加，光電流的變化。此研究目的旨在藉由一系列的探討，可以更瞭解共軛高分子和二維材料製成的混摻材料在光催化產氫反應的機制和表現。

In this study, we investigated the difference in photocatalytic performance between pure polymer thin film and hybrid thin film, with poly(3-hexylthiophene-2,5-diyl) (P3HT) and two-dimensional materials forming a hybrid structure.
In our experiments, we observed that P3HT can attach to the surface of graphene in the hybrid structure, and it will turn further into a distinctive crystalline morphology. Thereafter, we measured the photocurrent of thin films with the distinctive structure that we observed. We also altered the film process by stacking graphene on the P3HT film to from a vertical hybrid film. Different preparation methods were adapted to distribute graphene on the P3HT film.
On the other hand, molybdenum disulfide (MoS2) has been studied and applied to the field of hydrogen evolution reactions (HER). The exposed sulfur atoms on the edge of the MoS2 flakes can be used as the active sites for the HER. Therefore, MoS2 can effectively improve the photocatalytic activity. Based on the above, we further prepared hybrid P3HT and MoS2 films for photocurrent performance comparison.
We found out from our experiments that pure P3HT film performs better in photocurrent than the others. Therefore, we mixed P3HT with poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and measured its photocurrent. In addition, we measured the stability of P3HT thin films stored in an oxygen-free environment throughout a period of two months, observing the change in photocurrent with increasing storage time. With this study, we went further in understanding the HER performance and the mechanisms of conjugated polymers/2D materials hybrid films.

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