Question: Why Are Silicon Solar Cells Expensive?

What is the best material to make a solar panel?

Crystalline siliconCrystalline silicon is the most common material used in solar cells.

The lifespan of crystalline silicon cells is more than 25 years without deterioration, making it ideal for industrial solar power generation..

Why germanium is not used in solar cells?

Germanium is never used by itself as a solar cell because the efficiency is much lower than silicon, a cheaper alternative. … The room temperature band gaps of germanium, silicon and gallium arsenide are superimposed. Both Si and GaAs make good single junction cells but silicon is far cheaper than GaAs.

Why do we use silicon for solar cells?

A number of PV cells aggregated in a confined panel act as a collector of solar energy. Silicon semiconductors are popular because they exhibit properties such as low weight volume ratio, extended life cycle, robustness and strength. Silicon semiconductors are easy to produce at low cost.

What is the efficiency of a silicon solar cell?

Crystalline silicon PV cells have laboratory energy conversion efficiencies over 25% for single-crystal cells and over 20% for multicrystalline cells. However, industrially produced solar modules currently achieve efficiencies ranging from 18%–22% under standard test conditions.

How does a silicon solar cell work?

A solar cell is a sandwich of n-type silicon (blue) and p-type silicon (red). … It generates electricity by using sunlight to make electrons hop across the junction between the different flavors of silicon: When sunlight shines on the cell, photons (light particles) bombard the upper surface.

Are solar cells expensive?

There are many factors when looking at the cost of solar panels. … Solar panels will always be a long-term investment and the initial solar panel costs can seem high however the price of solar is now 70% cheaper than previous years.