Building a tester for solar cell efficiency

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Discussion Overview

The discussion centers on the design and implementation of a tester for measuring solar cell efficiency, particularly in an educational context. Participants explore the balance between using commercial equipment versus having students build their own measurement tools, considering factors such as educational goals, accuracy, and budget constraints.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant seeks advice on building a tester for solar cell efficiency using a sourceMeter and lamp.
  • Another participant questions the intended class/grade level and whether the goal is a quick demonstration or a detailed lab-quality test.
  • A participant suggests that creating a demonstration should be straightforward and asks if the original poster needs help with experimental ideas.
  • A participant shares their dilemma about setting up a solar cell research lab, weighing the investment in a high-cost instrument against the educational value of having students build their own measurement unit.
  • Some participants propose that if the goal is to train technicians for practical measurements, purchasing commercial equipment may be more beneficial, while others argue for the educational value of designing and building custom tools.
  • One participant believes a reasonably accurate tool for measuring solar cell efficiency can be built on a much lower budget, emphasizing the importance of understanding measurement design.

Areas of Agreement / Disagreement

Participants express differing views on whether to invest in commercial equipment or to have students build their own tools. There is no consensus on the best approach, as opinions vary based on educational goals and budget considerations.

Contextual Notes

Participants discuss the potential trade-offs between accuracy and educational value, as well as the implications of budget constraints on equipment choices. Specific assumptions about the skills of students and the desired outcomes of the project are not fully resolved.

Who May Find This Useful

Educators and researchers interested in solar cell technology, measurement techniques, and educational methodologies in STEM fields may find this discussion relevant.

Beeginner
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I am trying to have students build a tester with sourceMeter, lamp, etc. for solar cell efficiency measurement.

Could someone give me advice on this project?

Thank you very much.
 
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What class/grade level? Do you want a quick classroom demonstration, or a more detailed "lab quality" test?
 
pantaz said:
What class/grade level? Do you want a quick classroom demonstration, or a more detailed "lab quality" test?

Yea this. Making a demonstration should be trivial. Are you asking for help thinking of experiments to perform?
 
I am trying to setup a new solar cell undergraduate research lab. Here is my dilemma: I have a few thousand dollars of lab equipment capital and am trying to make a good decision now. To have students build an efficiency measurement unit for home-made dye-sensitized solar cell, they could learn a lot in electronics, but it would take quite long time and also the efficiency measured with home-built instrument may not be accurate at all. Is it a good investment for Keithley Model 2401 Low Voltage SourceMeter Instrument Price: $2,995.00 (very expensive to us), so students can focus on doing research more rather than building the tool? I don't have any experience in this new area. If you could make some suggestions, I highly appreciate it.
 
It really depends what is the goal of your teaching.
If you are training technicians, who'll be in their job expected to perform efficient measurements with off-the-shelf apparata they are equipped with - buy the box, and focus on measurement methodology and data interpretation.
If you are rather teaching them general approach to measurements, with some focus also on how to design and build their own equipement, and 'how the apparatus work' is more important than 'how to operate given tool' - then ask them to design and build their own tool at 10% of that price.
I believe that reasonable (1%) accuracy tool to measure efficiency of solar cells is easy to build with a budget of $299.50 and skills not much beyond high-school.
 
Ok, I will try to balance this. Thank you, xts, for making the picture clearer to me.
 

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