External stimuli induced metal halide perovskite materials
Abstract
Metal halide perovskites show hitherto inaccessible exotic properties that can be used to develop new technologies and also to increase the efficiency of existing systems. There are currently hundreds of metal halide perovskites. Their ionic bonding nature with soft lattices allows abundant phase transition including lattice distortion, compression, expansion, and rearrangement under various external factors such as temperature, light, pressure, moisture and vacuum. This class of structural flexibility can lead to considerable changes in their electronic properties, and thus providing further opportunities in a broad range of applications.Project Objectives: The aim of this proposal is to systematically investigate the crystal structures, phase transitions and structural changes of a series of metal halide perovskite caused by the application of various external stimuli (e.g. temperature, light, moisture, vacuum and pressure) through a combination of advanced characterization techniques and theoretical calculations. Importantly, the project will comprehensively examine the effect of the simultaneous application of at least two external factors. Project deliverables: The project is expected to generate outcomes including the discovery of new exciting properties of perovskite materials, and thus providing further opportunities for next-generation technologies. This project will provide high-quality training for undergraduate, graduate students and young researchers, preparing a future generation of scientists. The students and researchers involved in this project will benefit significantly by collaborating and networking with the world-leading research groups. Project Scientific Impact: There is a major knowledge gap regarding the structure-property of external stimuli induced metal halide perovskites. The project will generate new knowledge in this field. The key outcome of this project is to increase the current understanding level of structuresat atomic level andprovide some new strategies to further design halide perovskites with controlled properties.Project Wider Impact: The project will provide far reaching impact in the scientific and academic sectors. Ultimately, this project will significantly advance the knowledge in the fields of materials science, nanoscience, engineering, optoelectronics and photovoltaic. The project also has significant educational impacts such as providing high-quality research training for graduate students. The scientific resultsgenerated from this project will see publications in high-impact journals and be presented in important international conferences/workshops.Project Concept: The project aims to study the external stimuli induced phase-transitions and structural changes of metal halide perovskite thin films by combining both experimental and theoretical methods. Simultaneous applications of various external factors such as temperature, light, moisture, vacuum and pressure will be investigated. The typesof the perovskites that will be studied in this project will not be limited only to the traditional perovskites such as CH3NH3PbI3 and FAPbI3. The project will also cover a comprehensive range of perovskite crystals including all-inorganic perovskites, state-of-the-art hybrid organic-inorganic perovskites and lead-free perovskites. A combination of advanced characterization techniques and theoretical calculations will be used to gain fundamental understanding on structural-property relationships of the materials. Newly discovered mechanisms and properties through the application of external stimuli effects will be examined and confirmed using the state-of-the-art characterization tools.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Dec 14, 2024
- Source ID
- N629092512003
Entities
People
- Sarangerel Davaasambuu
Organizations
- National University of Mongolia
- Office of Naval Research
- United States Navy