Green Chemistry and Solar Cell Technology

Which of the following is NOT listed as a concept related to Solar Cell Technology in the document?

• Green chemistry

• Solar energy

• Electrochemistry

• Nuclear fusion

What is the main goal of green chemistry as described in the document?

• To increase the efficiency of solar cells

• To prevent pollution by designing safer chemical products and processes

• To develop new types of solar panels

• To reduce the cost of electricity

According to the document, what is a major factor limiting the use of solar energy?

• The lack of sunlight in most regions

• The trade-off between cost and efficiency

• The inability to store solar energy

• The high pollution caused by solar panels

Which type of solar cell mimics the process of photosynthesis to harvest sunlight?

• Conventional silicon solar cells

• Dye-sensitized solar cells

• High-purity silicon solar cells

• Polymer-based solar cells

Explain why high-performance solar cells are expensive to produce, based on the information in the document.

• They require large, high-purity silicon crystals

• They use rare metals

• They are made using gold

• They require a lot of electricity to manufacture

What is the photoelectric effect as used in solar cells?

• The emission of electrons when light falls on a material

• The absorption of heat by a material

• The reflection of sunlight by a surface

• The conversion of electricity into light

Describe the role of the band gap energy in a semiconductor.

• It determines the color of the material

• It determines how much energy must be supplied for the material to conduct electricity

• It controls the size of the solar cell

• It affects the weight of the solar cell

What is the difference between n-type and p-type silicon in conventional solar cells?

• N-type silicon has one more valence electron than silicon, while p-type silicon has one less

• N-type silicon is more expensive than p-type silicon

• N-type silicon is used only in dye-sensitized cells

• P-type silicon is not used in solar cells

What is the main factor limiting the use of solid-state solar cells?

• Efficiency of light absorption

• Cost

• Availability of sunlight

• Size of the solar cell

Who reported the development of dye-sensitized solar cells (DSSC) in 1991?

• Albert Einstein

• Michael Grätzel

• Thomas Edison

• Nikola Tesla