Perovskite solar cell

Why in news?

• Scientists have identified co-dopants that can increase the photovoltaic performance of transparent metal oxides such as ZnO, In2O3 and SnO2 thereby creating the potential for more efficient, better performing and more stable solar cells.

About Perovskite solar cell:

• Silicon is the most common semiconductor material used in solar cells. However, now efforts are being made around the world to develop cost-effective options. 
• Perovskites have emerged as a leading candidate for eventually replacing silicon as the material of choice for solar panels.
• A perovskite solar cell consists of a perovskite layer as the light absorber, sandwiched between the electron transport layer (ETL) coated with transparent conducting glass and hole transport layer (HTL) coated with a metal back contact electrode.
• They represent the most exciting approach to build solar cells that are inexpensive and highly efficient.

PRACTICE QUESTION:

Consider the following statements regarding Perovskite :

1. The efficiency of solar cells have increased due to these materials.

2. It is a type of mineral that was first found in the Ural Mountains

Which of the statements given above is/are correct?

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2

                            C

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