Short Summary
Development and
Characterization of Improved Solid State Dye-Sensitized
Nanocrystalline
Solar Cells
Jin Z. Zhang
99-10
EISG Project Title: Development and
Characterization of Improved Solid State Dye-Sensitized Nanocrystalline Solar
Cells
EISG Grant Number: 99-10
PIER Area: Renewable Energy Technologies
Principal Investigator: Jin Zhang
Contact Information: (831) 459-3776 zhang@chemistry.ucsc.edu
Organization: University of California, Santa Cruz
Grant Amount: $75,000
Grant Term: 18 Months
Project Description:
The purpose of this project is to research the feasibility of two innovations designed to reduce the cost and improve the reliability and maintainability of nanocrystalline dye-sensitized solar cells. In this type of solar cell sunlight is absorbed by the dye which transfers electrons to titanium oxide particles which pass the electrons to the conductive layer on the glass. A liquid solution (electrolyte/redox mediator) is used to regenerate the dye. This project will investigate (1) use of a solid polymer film in place of the liquid solution, and (2) use of natural water-based non-toxic pigments. Four promising transparent conjugated polymers will be fabricated and tested.
Proposed Outcomes:
· Prototype nanocrystalline dye-sensitized solar cell built with a solid polymer film in place of liquid electrolyte/redox and a natural water-based pigment.
· Identification of technological obstacles that need to be overcome to advance concept to the next level.
Anticipated Benefits:
· Increase the operational life of nanocrystalline dye-sensitized solar cells beyond the current limit of 7000 hours. Limitation is due to the instability of the liquid electrolyte/redox media.
· Advantage of nanocrystalline dye-sensitized solar cells is that they can be fabricated using inexpensive materials and little specialized equipment making them attractive to both industrialized and developing nations.