1-Phenyl-9H-carbazole is widely used in the field of organic electronics, particularly in the development of organic light-emitting diodes (OLEDs). Its molecular structure, featuring a carbazole core with a phenyl substituent, makes it an effective hole-transporting material. This compound enhances the efficiency and stability of OLED devices by facilitating the movement of positive charges within the organic layers. Additionally, it is utilized in the synthesis of advanced materials for optoelectronic applications, such as photoconductors and photovoltaic cells, due to its excellent electron-donating properties and thermal stability. Its role in these technologies contributes to the advancement of energy-efficient displays and renewable energy solutions.