51-60 Flashcards
What is a p-type semiconductor?
It has less valent electrons than a pure silicon crystal.
What is an n-type semiconductor?
It has more valent electrons than a pure silicon crystal
Why is a modern photovoltaic cell made with a p-type semiconductor and an n-type semiconductor attached together side by side?
to create a permanent electric field at the junction of the two types of semiconductor, regardless whether light is present.
What is the typical efficiency of modern photovoltaic cells?
10–20%
Given that a photovoltaic cell is typically 0.5V, how many photovoltaic cells are there in a solar panel that provides 30V?
(Hint: Number of photovoltaic cells = Voltage of a solar pane/ voltage of a photovolatic cell.)
60
Which US state is the lead user of photovoltaic cells?
California
Which country is currently the lead user of photovoltaic cells?
China
As of 2022, the cost of installation of a residential solar panel is $3 per Watt. A typical residential solar panel has 300 Watts. What is the price of this panel? (Hint: Total price = Price per watt × Wattage of a solar panel.)
$900
Which of the following country has successfully promoted residential use of photovoltaic solar power systems using feed-in tariffs?
Germany
What is concentrated solar thermal power?
Sunlight is reflected and focused on a cylinder containing water or molten salt, either to boil the water or heat up the molten salt.
