Research

Chemical Sciences

Title :

Donor-Acceptor Block Copolymers based on norbornene as quantum dot carriers - Effect of backbone rigidity on electronic properties

Area of research :

Chemical Sciences

Principal Investigator :

Dr. Mutyalanaidu Ganivada, University Of Hyderabad, Telangana

Timeline Start Year :

2022

Timeline End Year :

2024

Contact info :

Details

Executive Summary :

Due to the growing demand for novel renewable energy sources, solar cells based on semiconducting polymers have received a lot of interest recently from a wide range of research domains, including polymer chemistry, physical chemistry, electrochemistry, photochemistry, and nanoscience. The prospect of using organic semiconductors as a low-cost alternative for silicon has been studied extensively since their discovery. Polymer semiconductors are particularly intriguing because of their potential advantages over inorganic counterparts, such as solution processability, flexibility, lightweight, and low manufacturing cost. In addition, by combining two polymers or a polymer and a small molecule, fascinating film microstructures can be created, which is one of the key reasons why these reduced crystallinity materials can compete with small molecule organic solar cells. Quantum dots (QDs) have an unusual physical behaviour that is completely different from the properties of bulk material due to their nanoscale size. Conjugated polymers, also known as conductive polymers, are polymers with loosely held electrons in their backbones. The processability of conductive polymers is their major benefit. As a result, they can combine plastics' mechanical qualities with their high electrical conductivity. Fullerene derivatives are the most extensively used electron acceptors in organic photovoltaics. If the electron acceptor is to be thermally evaporated, Buckminsterfullerene (C60) is usually employed. The goal of this study is to synthesise functional Norbornene-based block copolymers and better understand their microstructure. These compounds could be employed as active layer materials in organic photovoltaics in the future. While many different polymer systems could have been used, this research focuses on polythiophene-fullerene based block copolymers because the polythiophene family of materials has attracted a lot of interest in the field of organic electronics due to their high hole transport (p-type) performance, chemically tunable electronic properties, and processibility in a wide range of solvents. To create a new class of donor-acceptor Poly (thiophenes) and fullerene block copolymers and to better understand their microstructure. With the norbornene backbone, we aim to apply living/controlled polymerization techniques.

Organizations involved