Recent development and challenges of flexible perovskite transparent conductive oxides in optoelectronic applications

Lightweight, adaptable, and portable technologies in next-generation devices are driving the demand for transparent and flexible optoelectronic devices, with transparent conductive oxides (TCOs) such as indium tin oxide (ITO) and indium gallium zinc oxide (IGZO) playing crucial roles. Despite efforts, creating a low-cost, flexible transparent conductive film with both high optical transparency and electrical conductivity remains a challenge. Due to the increasing demand for flexible optoelectronic devices and the scarcity of indium, it is essential to explore alternative materials. Perovskite structures are gaining preference as TCO materials because of their versatile physical properties, compatibility with multilayer structures, and potential in high-temperature and high-power electronics. This paper review focused on flexible perovskite TCO, the best candidate for use as a flexible substrate. Perovskite materials are discussed as a possible replacement for the current TCO film components. However, the researchers have encountered significant challenges in building high-performance flexible optoelectronic devices, underscoring the complexity and importance of this field. In addition, the researchers discussed the industrial concerns of flexible perovskite TCO at the end of this review.