Carbazole structure application in organic light-emitting diodes and perovskite solar cells

Abstract

Hole Transport Materials (HTMs) play a pivotal role in a diverse array of cutting-edge optoelectronic devices prevalent in today's technological landscape. These materials are indispensable for the functionality and performance optimization of various technologies, including displays like Organic Light-Emitting Diodes (OLEDs) and photovoltaic devices like Perovskite Solar Cells (PSCs). The continuous advancement of OLEDs and PSCs over recent decades has spurred the innovation and development of a multitude of HTMs, each characterized by unique structural features. Presently, a notable trend is observed in the utilization of specific small organic molecules, such as carbazoles, as constituents of HTMs. Carbazole-based HTMs exhibit exceptional photovoltaic properties when compared to their counterparts and can be synthesized at a reduced cost, thus driving further exploration and refinement in this domain. Consequently, there is a concerted effort to gain comprehensive insights into the characteristics and capabilities of this category of HTMs, with a particular emphasis on Carbazole-Based Hole Transport Layers (HTLs). Therefore, Leveraging the intrinsic attributes of Carbazole-Based HTLs, researchers have focused on elucidating critical parameters such as Highest Occupied Molecular Orbital (HOMO)-Lowest Unoccupied Molecular Orbital (LUMO) energy levels, Glass Transition Temperatures (Tg), hole mobilities, among others. These data serve as invaluable assets for researchers engaged in interdisciplinary fields spanning chemistry, materials science, electrical engineering, and physics. This investigation stands as a succinct yet comprehensive resource, delving into the intricacies of Carbazole-Based HTLs within the contexts of OLEDs and PSCs. By offering valuable insights and understanding into the design and optimization of HTMs, this study serves as a guiding beacon for researchers, catalyzing further advancements in the field of optoelectronics. © 2024 Nova Science Publishers, Inc. All rights reserved.