About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
|
Energy Materials for Sustainable Development
|
Presentation Title |
Designed Polymer Ligands for Perovskite Quantum Dots and their Block Copolymer Nanocomposites |
Author(s) |
Naifu Shen, Chenghan Tsai, Weinan Xu |
On-Site Speaker (Planned) |
Naifu Shen |
Abstract Scope |
Perovskite quantum dots (QDs) have been at the forefront of next-generation photovoltaics and optoelectronics applications. However, perovskite QDs has poor stability (such as against moisture and polar solvents), as well as the lack of efficient nanopatterning methods. We provide a promising approach to address both of those challenges by molecular engineering and integration of QDs with block copolymers (BCP). The BCP thermoplastic elastomers not only substantially improve the stability of perovskite QDs by encapsulating them in a highly stable and soft matrix, but also enable molecular-level control of the alignment and assembly of perovskite QDs in the microphase-separated BCP matrix. We demonstrated that designing and synthesis of compatible polymer ligands for perovskite QDs is key to enabling their selective and strong interaction with the BCP matrix. The structure and molecular weight of the BCP also play an important role in the interfacial structure and optical properties of the QDs-BCP nanocomposites |