Growth of wafer-size organic semiconductor crystals and its thermoelectric application

我们尝试将载流子掺杂到有机半导体中，制备出具有足够尺寸的单晶，并研究了其热电性能。我们研究了铜酞菁(CuPc)在室温下熔融成蒽醌(AQ)的行为，这两种化合物都是固体。我们尝试用蒸发溶剂AQ的方法生长CuPc单晶，得到了毫米级的单晶。我们将FeCl3掺杂到CuPc中，将掺杂剂混合到溶液中。XPS和近红外光谱分析表明，电荷转移程度与掺杂剂的摩尔分数有关。掺杂后电导率和塞贝克系数均增大。

We attempted to dope carriers to organic semiconductors and make single crystals with sufficient sizes and studied its thermoelectric properties. We investigated the melting behavior of copper phthalocyanine (CuPc) to anthraquinone (AQ), which are both solid at room temperature. We attempted to grow the single crystal of CuPc by evaporating the solvent AQ and obtained mm-sized single crystals. We doped FeCl3 to CuPc by mixing the dopant to the solution. XPS and near infrared spectroscopy revealed that the charge transfer extent is dependent on the molar fraction of the dopant. The electric conductivity and Seebeck coefficient both increased upon doping.