DYE-SENSITIZED TIO2 SOLAR CELL 3) What is one advantage of using titanium dioxide powder rather than...

DYE-SENSITIZED TIO2 SOLAR CELL

3) What is one advantage of using titanium dioxide powder rather than a sheet of titanium dioxide?

Expert Solution

In dye-sensitized solar cells conversion of light into electrons takes place. Sensitized wide band gap semiconductors such as TiO2 are used in these solar cells which leads to high chemical stability of cell due to photocorrosion. TiO2 is most widely used semiconductor in these solar cells because it is a strong oxidizing agent, non-toxic and have high chemical and thermal stability.

On increasing the size of a particle the number of particles increases and the smaller particles result in increase of rate of a reaction because the surface area has been increased. Similar is the case with powdered and sheet titanium dioxide. The powdered TiO2 provides larger surface area for adsorption, so it will increase the amount of dye adsorbed which further leads to increase in amount of light absorbed.

Thus powdered TiO2 has an advantage over sheet TiO2 that is why in dye sensitized solar cells powder TiO2 is used. (Nowadays TiO2 is used in nanometer sized powder).

queen_honey_blossom answered 2 years ago

What is the advantage of using max wavelength rather than the wavelength nearby such as 580...

What is the advantage of using max wavelength rather than the wavelength nearby such as 580 nm? This is for the Bradford protein assay where the maximum of the absorbance spectrum is at 595 nm.

Which of the following is not an advantage of a company using equity rather than debt...

Which of the following is not an advantage of a company using equity rather than debt to finance a project? A. Interest always takes more cash than does paying dividends. B. Dividends do not need to be paid. C. Equity does not need to be repaid whereas debt does. D. Interest and Dividends are tax deductible. A note of caution in interpreting the debt ratio is that A. all debt decreases liquidity ratios. B. financing arrangements, such as leases, may...

Discuss the advantage of using new technology of calibrating pressure gauge rather than deadweight tester

What is a major economic advantage of producing therapeutic proteins in plants rather than in bioreactors...

What is a major economic advantage of producing therapeutic proteins in plants rather than in bioreactors filled with microbes or mammalian cells?

What is the advantage of defining the member functions outside a class rather than defining inside...

What is the advantage of defining the member functions outside a class rather than defining inside a class? How the following are achieved in C++? a) static polymorphism. b) dynamic polymorphism What will happen if you forget to implement the pure virtual function in the derived class? How a function templates differs from function overloading?

**Physiology 6. What features are necessary for the cell to engage in facilitated diffusion rather than...

**Physiology 6. What features are necessary for the cell to engage in facilitated diffusion rather than simple diffusion? Secondary active transport rather than primary active transport (is this different for symport and antiport? What advantages do we derive by putting these modifications in place? 2. Make a concept map of the cell membrane. Include each of the functions of the cell membrane listed below. Make sure each function is correctly linked to the components of the cell membrane responsible for...

What are the advantages of a using a linked list rather than a conventional array in...

What are the advantages of a using a linked list rather than a conventional array in Java? and when would it be more efficient to use an array rather than a linked list? Explain your answer.

3. A “chord” (two or more notes played simultaneously, rather than one at a time) consists...

3. A “chord” (two or more notes played simultaneously, rather than one at a time) consists of an unordered selection (without repetition) from among the seven notes {A, B, C, D, E, F, G}. a. How many different four note “chords” are possible? b. How many different four note “chords” are there such that “A” is one of the four notes? c. How many four note “chords” are there such that “A” is NOT one of the four notes?

What are the advantages and disadvantages of using ranks rather than continuous measurements to conduct tests...

What are the advantages and disadvantages of using ranks rather than continuous measurements to conduct tests of hypotheses?

what is the benefit of using DOM2 event model rather than DOM0? Explain with an example...

what is the benefit of using DOM2 event model rather than DOM0? Explain with an example please exaplain with a basic example thanks in advance

Question