Engineering Organometallic Hybrid Perovskite/Polymer Composites for New Generation Electro-Optics Manufacturing
Abstract
This AFOSR funded project under award number FA9550-16-1-0124 through the Young Investigator Program, aims at replacing the perovskite thin film with a film of perovskite/polymer composite for optoelectronic devices. The composite will be advantageous for improving the processability of perovskite optoelectronics. The composite will also enhance the morphological and compositional resistance of perovskites to humid fabrication and service environments. By embedding the perovskite crystals inside a polymer matrix, the perovskites can be less toxic to handle compared to the pure perovskite film. This final project report summarized the progresses of the proposed tasks in the past three years. Overall, the PI and his team have systematically investigated the structure-process-property relationships of perovskite/polymer composites. Such studies have resulted in solution-processed perovskite LEDs with a record luminance intensity, stretchable perovskite LEDs with a 3-5 times lower turn-on voltage than previously reported stretchable polymer LEDs, and 3D printed perovskite radiation detectors that decouple photon absorption-charge collection efficiency. In addition, the PI's studies have led to answers or clues to several fundamental questions including: 1) What are the structural features of the polymer that control perovskite-polymer interactions to achieve a uniform perovskite/polymer composite; 2) What are the roles of the polymers to impact the mechanical, electrical and photonic properties and manufacturing capability of the perovskite/polymer composite; 3) Adding more complexities to the above questions due to the ionic nature of most perovskite compounds, what are the roles of ion migration in the perovskite/polymer composite affecting the electrical and photonic properties of the perovskites, and how they impact the operation stability of perovskite optoelectronic devices.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 19, 2019
- Accession Number
- AD1086102
Entities
People
- Zhibin Yu
Organizations
- Florida State University