Rao, Pratap M.
Timko, Michael T.
Solar energy is a growing source of sustainable energy. However, some of the main components of solar cells are made up of inorganic, toxic, and expensive materials.[1, 2] In this study, carbon quantum dots (CQDs) were used as the photo-absorber in solar cells. CQDs are made from common organic carbon sources such as glucose, citric acid, and ethanediamine, and act as the semiconductor in a solar cell.[3, 4] The downside of CQDs in solar cells is their low efficiencies (<1%), whereas most modern solar cells produce efficiencies of around 20%. This study used the in-situ growth of CQDs onto the electron transport layer (ETL) of a solid state solar cell through hydrothermal carbonization. By testing cells with varying ETLs, it was found that decreasing the ETL thickness increased efficiency.
Worcester Polytechnic Institute
Major Qualifying Project
All authors have granted to WPI a nonexclusive royalty-free license to distribute copies of the work, subject to other agreements. Copyright is held by the author or authors, with all rights reserved, unless otherwise noted.