The innovation engine for new materials

Rachel Alvelais

Rachel Alvelais

Major: 

Chemistry

Mentor(s): 

Will Elliott

Faculty Sponsor(s): 

Martin Moskovits

Faculty Sponsor's Department(s): 

Chemistry and Biochemistry

Project Title: 

Electrochemical Production of Multi-Junction Nanorod Solar Cells

Project Description: 

Most commercial silicon-based photovoltaics do not effectively use all the light they absorb. Multi-junction solar cells made out of non-silicon materials, such as cadmium chalcogenides, can obtain higher efficiencies, but these cells require painstaking and costly techniques to produce. With electrochemical bath processing and chemical depositions, we can economically produce nanorod-based photovoltaic devices with large usable surface areas. As a proof of concept, we have produced a solar cell by depositing cadmium telluride, followed by gold onto silver nanowires fabricated in porous alumina which functions as a template for the growth of nanostructures. This work details the construction of such a device and the characterization that must be done to prove a device’s merit.