PeLED · Towards Efficient and Stable Perovskite Light-Emitting Diodes
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2018-07-01 → 2020-06-30
- EU contribution
- €185,857
- Participants
- 1
- Scheme
- MSCA-IF-EF-ST
Lines connect the coordinator with its partners.
Results in brief
Towards Efficient and Stable Perovskite Light-Emitting Diodes
Global energy consumption is increasing rapidly nowadays. Considering that displays and lighting accounts for a substantial proportion of energy consumption, efficient light-emitting diodes (LEDs) would play an important role in reducing energy consumption globally. Recently, perovskite materials have emerged as promising candidates for high-performance and low-cost LEDs. They have outstanding optoelectronic properties and solution processability. Since the first room-temperature perovskite LEDs demonstrated in 2014, rapid progress has been made through interfacial engineering and nanocrystal pinning techniques. However, the poor stability and relatively low photoluminescent efficiency of the perovskite materials are still two major problems that limit further advances of this promising technology. This project aims to address these problems and to develop efficient and stable perovskite LEDs through design and synthesis of new perovskite emitters, deposition of high-quality perovskite films and fabrication of high-performance LED devices. During this reporting period, we have designed and synthesized a series of new perovskite emitters, including Ruddlesden-Popper perovskites and perovskite-molecule composites. We have also developed a new approach for depositing high-quality Ruddlesden-Popper perovskite thin films directly from commercially available amines. Moreover, we have achieved efficient and stable perovskite LEDs with an external quantum efficiency of 17.3% and a long lifetime of 100 h (measured at an initial radiance of 15 W sr-1 m-2). These results represent significant breakthroughs in achieving perovskite LEDs with both high efficiency and long lifetime.
Data: CORDIS, © European Union
Project objective
Light-emitting diodes (LEDs) based on organometallic halide perovskites have attracted increasing interest due to their unique properties, such as high colour purity, easily tunable optoelectronic properties, and solution processable for low-cost and large-arear manufacturing, showing great potential in displays and lighting applications. Even though the photonic and electronic properties of perovskites are very attractive, the poor stability and relatively low photoluminescent efficiency are two major problems that limit their progress in LEDs. In this project, I aim to address these challenges and develop efficient and stable perovskite LEDs. I propose a) to design and synthesize Ruddlesden-Popper perovskite (RPP) emitters with stable crystal structures and excellent optoelectronic properties, with the help of first-principles calculations, b) to deposit high-quality RPP films using new synthetic routes, and c) to fabricate efficient and stable LEDs with performance beyond the state of the art, by coupling device engineering with device physics investigations. This project will increase the fundamental knowledge concerning RPP materials and devices. The expected outcomes are new type perovskite materials with good optoelectronic properties, as well as stable and efficient LEDs. In addition, I will be trained to develop new interdisciplinary knowledge and skills and to reach professional maturity by implementing the project. In addition to individual development, successful implementation of this project will also promote the international competitiveness of the host organization on research of perovskite optoelectronics. Potential commercialization of the new perovskite materials and LEDs products will also generate economic growth and new job opportunities for the Europe society.
Original text from CORDIS.
Participants
- LINKOPINGS UNIVERSITET · LinkopingCoordinatorSweden
Links
Data: CORDIS, © European Union