What semiconductor materials would be more suitable for a single junction pv device for ground or roof based applications using absorption data for four semiconductor materials. Assume typical solar spectrum AM 1.5, and that materials have comparable absorption coefficients. 2. Based on data, can you suggest a photovoltaic devices with higher conversion efficiency than the one discussed in number 1? Explain your answer

Q: An n-type semiconductor with direct band structure (Eg = 2.5 eV) is applied with a DC voltage shown…

A: Given: An n-type semiconductor with direct band structure (Eg = 2.5 eV) is applied with a DC…

Q: Describe the difference between passive solar and photovoltaic cells.

A: Solar energy is the energy from the sun. The sun's energy is being utilized for various…

Q: Hall measurement is conducted on a silicon sample of unknown doping with W= 100cm, A = 2.5 ×…

A:

Q: Consider a solar cell made of Alo.3Ga0.7As. When exposed to sunlight, it generates a photocurrent of…

A: Photocurrent (Iph)= 0.096 A Open circuit voltage(Voc)= 0.6 volts Here we will use the…

Q: a. What is the Staebler-Wornski effect in an amorphous silicon (a-Si) solar cells and how can it be…

A: Solution (a) -  Staebler-Wornski effect - The light-induced metastable changes in the…

Q: 10. The is a two-terminal semiconductor device whose terminal resistance will vary ...........…

A: ANS 10 photoconductive cell The photoconductive cell is a two terminal semiconductor device whose…

Q: 2. A silicon specimen is doped with 4.73 x1010/cm³ Antimony and 3.57x1010/cm³ Aluminum. a) Calculate…

A: We need to find out electron and hole concentration of given semiconductor .

Q: How can holes be produced in a semiconductor? Holes can be produced by thermal excitation. Holes can…

A: Holes can be produced by : 1) Thermal Excitation - This results in the breaking of covalent bonds,…

Q: Describe the state-of-charge (SOC) of a battery, and a method of estimating SOC.

A: We need to discuss the state-of-charge (SOC) of a battery, and a method of estimating SOC.

Photoelectric

The photoelectric effect occurs when light (or similar incident radiation, including X-rays) falls on material together with a metal plate and causes it to emit electrons. The discovery of the photoelectric effect led to important new theories (and to a Nobel Prize for Albert Einstein). Photoelectric cells, or photocells, are utilized in burglar-alarm light detectors and garage-door openers (each employs a through-beam of light this is broken when something movements throughout it), and also to play soundtracks on film movies (in which a light beam shines through the soundtrack encoded at the film and is "read" with the aid of the photocells).