Dear Maytham Qabel Hamzah , it is an interesting issue.
There are similarities between the two approaches. Both solar cells and plants harvest energy from sunlight.
Photovoltaic solar cells collect sunlight and change it into electricity. Plant leaves gather sunlight and convert it into stored chemical energy. Both solar cells and plants are doing the same job, but they do it in different ways.
One type of solar cell is even designed to be as similar to photosynthesis as possible.
Dear Maytham Qabel Hamzah , it is an interesting issue.
There are similarities between the two approaches. Both solar cells and plants harvest energy from sunlight.
Photovoltaic solar cells collect sunlight and change it into electricity. Plant leaves gather sunlight and convert it into stored chemical energy. Both solar cells and plants are doing the same job, but they do it in different ways.
One type of solar cell is even designed to be as similar to photosynthesis as possible.
"Both solar cell and photosynthesis processes need light from the sun to function. In both cases, there is absorption of energy from the sun. In solar cell, the absorbed energy is needed to release of electrons, whereas in photosynthesis, the absorbed energy is used to generate carbohydrate and oxygen from the leaf. In both cases there is transportation of the products down to areas of needs. In solar cell, the electrons are transported through the anode to the external terminal where they are utilized, whereas the carbohydrate generated during photosynthesis is transported through the vascular bundles of the plant to the upper and lower epidermis where they are stored for use. The oxygen generated goes into the atmosphere through the stomates. In both cases there are certain chemical reactions that are involved. For photosynthesis, the chemical reaction occurs in the leaf; whereas the reaction for solar cell occurs at the interface between the dye and the electrolyte. Both photosynthesis and the operational principle of dye sensitized solar cell are environmental friendly, since pollutants are not released in both processes. Lastly there is conversion of energy from light to electricity (in Dye-sensitized solar cell) and from light to chemical (in plants). In essence, in both cases there is conversion of light energy to other forms energy".
Both solar cells and plants harvest energy from sunlight. Photovoltaic solar cells collect sunlight and change it into electricity. Plant leaves gather sunlight and convert it into stored chemical energy. Both solar cells and plants are doing the same job, but they do it in different ways. There are similarities between the two approaches, though. One type of solar cell is even designed to be as similar to photosynthesis as possible.
Energy From Light
The energy in sunlight comes as little parcels called photons. Photons each carry a tiny bit of energy. The energy of a blue photon is higher than the energy of a red photon. That's important because both solar cells and plants can only absorb sunlight if the energy is just right. When a material absorbs sunlight, the photons in the light are transferring their energy to electrons in the material. Electrons can only absorb energy in a narrow range, so a given electron will only be able to accept energy from photons o specific colors in the light spectrum.
The Right Photon Energy
Both photo voltaics and photosynthetic plants are set up to absorb photons. In photosynthesis, evolution has produced chlorophyll, a molecule that will absorb the brightest sunlight. For photovoltaics, engineers have designed crystals where the electrons can use just the amount of energy contained in sunlight photons. In both cases, photons are absorbed by electrons, which take up the extra energy. An electron with extra energy is called an excited electron, or an electron in an excited state.
Handling Excited Electrons
Both plant and solar cells must handle excited electrons quickly, before they give up their energy and go back where they were before they absorbed their photons. In photosynthesis, the problem is solved by moving the electron from one molecule to another until it settles in a molecule that can store energy for a long time. In photovoltaics the excited electrons are whisked off into a circuit, where they either run something right away or are routed into a battery for storage.
It is the principle of generating energy from the sunlight that is similar to both photosynthesis and solar cells. While the chlorophyll elements of plant leaves does the collection and the changing of the radiant rays into chemical energy for food preparation, the photovoltaic elements in the solar cell collects and transforms the sun energy into electricity.
It is an interesting Question and a good analogy between the two phenomena. I concur Dr. Beemnet Mengesha Kassahun, the two phenomena were occurred to get the required energy.