Photoelectrochemistry

Assalamualaikum and very good morning everyone. We are from group 3. We hope you guys have watched our video. Because in order to proceed with this task your need to understand the video.

There are several question we prepared. You guys need to answer all of the question. All the question is based on the video. Please give your full cooperation.

Created by: Nur

The term photovoltaic come from __________
- Spanish
- Greek
- German
- English
What is the function of the membrane in the photoelectrochemical (PEC) cell?
- To prevent crossover of gaseous product
- To be a decoration in the PEC set up
- To increase the efficiency of PEC
- All of above
The number of photoelectrons increases the photoelectric current.
- True
- False
How does the intensity effect the photoelectric current
- As intensity increases, the photoelectric effect increases
- As intensity increases, the photoelectric effect decreases
- As intensity decreases, the photoelectric effect become twice
- No effect
In order to minimize the loss of photon due to surface reflection, __________ is used on the surface of photovoltaic cell
- reflective coating
- anti reflective coating
- high reflector coating
In the three-electrode configuration system, the prepared sample is the__________.
- reference electrode
- working electrode
- auxiliary electrode
What problem will occur when the counter electrode and the working electrode are too close to each other?
- There will be no problem if the two electrode are place too close to each other.
- The set up will not be function at all.
- . The gas produced will evolved at one surface in which will occur contamination.
- The water cannot be split to produce hydrogen gas a gas.
Kinetic energy of photoelectrons increases when energy of light decrease.
- True
- False
What atom is substituted in the p-type silicon layer?
- Beryllium
- Bromine
- Boron
- Barium
Aqueous electrolyte does not involve in the PEC set up.
- True
- False
When kinetic energy of photoelectrons is ______ threshold energy then photoelectric current is produced.
- greater than
- equal to
- less than
What happened when a beam of light with frequency equal to the threshold frequency strikes the surface of matter
- Photoelectric effect could not be seen
- Number of photoelectrons increase
- Photoelectric effect produced
Negative carrier dopant act as a ______
- Donor
- Acceptor
- Both donor and acceptor
How does the potential barrier formed?
- By adding a layer of aluminium in the middle of n-type material and p-type material
- By putting into contact the layer of n-type material and the p-type material
- By connecting both n-type and p-type layers together using a wire.

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