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10 September 2019 High-performance organic light-emitting diodes with metal halide hybrid perovskites (Conference Presentation)
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Abstract
Organic light-emitting diode (OLED) technology is promising for next-generation displays and lighting. On the other hand, hybrid perovskite light-emitting diodes (PLED) have recently emerged. In this study, we incorporated metal halide hybrid perovskites as host or carrier transport layers into OLEDs with the aim of obtaining device performance higher than that of existing OLEDs and PLEDs. Hybrid perovskite films can be prepared with a simple method, such as spin coating or vacuum deposition, similarly to organic film fabrication. This is because of their excellent self-organization nature. Even in spin-coated and vacuum-deposited hybrid perovskite films, carrier mobilities are very high compared with organic films used for OLEDs. This is associated with inorganic metal halide frameworks formed through films. Additionally, more singlet excitons than usual can be generated in an organic emitter as a result of energy transfer from a hybrid perovskite portion. This energy transfer also lead to good operational durability under continuous operation. By taking these advantages, we demonstrated extremely high performance from OLEDs with hybrid perovskites. We believe that this sort of organic/perovskite hybrid device architectures can be a new technology, which enables the fabrication of more efficient and stable LEDs with lower voltages at a lower cost in the future.
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© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Toshinori Matsushima and Chihaya Adachi "High-performance organic light-emitting diodes with metal halide hybrid perovskites (Conference Presentation)", Proc. SPIE 11093, Organic and Hybrid Light Emitting Materials and Devices XXIII, 110930Z (10 September 2019); https://doi.org/10.1117/12.2531931
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