在石墨烯限制下的β態硫化亞銅至纖鋅礦銅金態硫化銦銅的拓撲變換

Abstract

隨著地球平均溫度不斷升高，極端天氣的發生也變得越來越頻繁。為了減緩這個趨勢，人們開始尋找再生能源。硫化銦銅(CuInS2)是一個可靠的光伏材料來採集太陽能。很多研究者在鑽研如何提升材料的轉換效率，不過，關於CuInS2的特性還有未被探討的部分。 為了回答這個問題，我們試著用一種新方法來合成纖鋅礦型銅金態CuInS2。在這個方法中，我們在石墨烯壓力下將β態硫化亞銅轉換成纖鋅礦型銅金態CuInS2。這個材料的光伏特性是不好的，不過我們發現在石墨烯影響下，它有鐵電的特性。這個新的生長方法展示了合成其他亞穩態材料的可能性。

As the average temperature of the earth keep rising, the occurrence of extreme weather has become much more frequent. To slow down the trend, people look out for renewable energy. CuInS2 is a promising photovoltaic material for harvesting solar energy. Many researchers are focusing on how to enhance the conversion efficiency of the material. However, the property of CuInS2 has not yet been fully discussed. To answer the remain question, we try to synthesize wurtzite CuAu-CuInS2 with a new approach. In this new method, we convert β-Cu2S to wurtzite CuAu-CuInS2 with graphene confinement. The photovoltaic property of this material is poor, but there is ferroelectric characteristics induced by graphene. This new method shows the possibility to synthesize other metastable material.