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 ECE 480 Team 13 Tunable light Source Team
(From left to right) Isaac Davila Manager Ruben Valencia Lab coordinator John Foxworth Presentation prep Cynthia Patrick Document preparation Haosheng Liu Web Master
Goal
Project Description A Hand held, Low-Cost Tunable Light Source using LEDs for Solar Cell Efficiency Measurement. Goal of this project is to design and construct a light source which is wavelength tunable over a spectral range of 400 – 1100nm. This source will mimic the spectral content of the sun light. The source will be housed in a compact unit that will allow in the measurement of quantum efficiency of solar cells at local spots. There are table-top commercial systems available that uses broad band light source and optical grating to allow such measurements. Here, instead of using a broad band light source, an array of LEDs are to be used that can actively be controlled using a laptop through a USB port. For testing of solar cells, illumination of a local spot of 1mm2 area with total power of 0.1W is required. A minimum of 25 peak wavelength points are desirable over a spectral range of 400 – 1100 nm. The output power of the solar cells will be measured using a simple voltmeter. The prototype unit of this project will be used in future ECE476 labs.
Documents
Proposal
Final Proposal
Application Notes Test Efficiency of Solar Cell LED Application Photo-resistor Control Light Intensity
Program Microcontroller Tuning the Device
Presentation power point Proposal Presentation Technical Presentation
Progress Report Progress Report I Progress Report II
Design Issue Paper Design Issue Paper
Final Report Final Report Poster
Project
Final Array Design
Contact Us
Isaac Davila davilais@msu.edu Ruben Valencia valenc18@msu.edu John Foxworth foxwort8@msu.edu Cynthia Patrick patri117@msu.edu Haosheng Liu liuhaosh@msu.edu