Copper indium gallium selenide

High school (ages 12+)
Science & Technology

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Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/copper-indium-gallium-selenide

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the scientific classification?I-III-VI2 semiconductor alloy
2. What is the formula range?CuIn1−xGaxSe2, with x varying from 0 to 1
3. What is Copper Indium Gallium Selenide and why is it called sparkly?It is a special shiny material that helps turn sunlight into power. It is made from copper, indium, gallium, and selenium and has a crystal structure that lets it absorb light.
4. How can scientists change the properties of CIGS?By changing how much indium and gallium are mixed, scientists can adjust the bandgap and make the material work better for different uses.

Quaternary Semiconductor: A semiconductor compound composed of four different elements.
Bandgap Engineering: The process of adjusting a semiconductor's bandgap by altering its composition or structure.
Thin-Film Photovoltaics: Solar cells made by depositing very thin layers of semiconductor material onto a substrate.
Tandem Solar Cell: A solar cell composed of multiple semiconductor layers, each optimized to absorb a different part of the solar spectrum.