character: Mr. Smith
topic: Chemical Composition of Solar Cells
grade: 9
subject: Chemistry
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character: Ms. Johnson
topic: Basics of Photovoltaic Cells
grade: 9
subject: Chemistry
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character: Dr. Brown
topic: Materials Used in Solar Energy Technology
grade: 9
subject: Chemistry
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character: Mr. Lee
topic: Semiconductors in Solar Panels
grade: 9
subject: Chemistry
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