13.9
A.
B.
C.
(a)
(b)
(c)
(d)
13.10
A.
B.
C.
(a)
(b)
(c)
(d)
13.11
13.12
(a)
(b)
(c)
(d)
13.13
(a)
(b)
(c)
(d)
13.14
(a)
(b)
(c)
layer.
What are the demonstrated advantages of CdTe technologies for solar cells?
Low cost potential.
Recycling of materials for further use.
High module efficiencies in reference to crystalline silicon wafer-based modules.
Only A.
Only C.
Both A and B.
Both A and C.
What are the known disadvantages of CdTe materials used in solar cells?
Cd is a toxic element.
Not possible to recycle the materials.
Te is not abundantly available which limits the possibility of scaling up.
Only A.
Only C.
Both A and B.
Both A and C.
A First Solar module FS-380 has the following specifications: Area A = 0.72 m 2 , nominal power P nom = 80.0
W, V oc = 61.7 V, I sc = 1.76 A, V MPP = 50.7 V, I MPP = 1.58 A. What is the efficiency of this module under STC?
In dye-sensitized solar cells (DSSC) the absorption of photons occurs in …
… the wide bandgap of the semiconductor TiO 2 .
… the dye.
… the electrolyte.
… the platinum/TCO contact.
Which statement about DSSCs is true?
The electrons that pass through the external load oxidize the iodide to yield triodide.
The electrons that pass through the external load reduce the iodide to yield triodide.
The electrons that pass through the external load oxidize the triodide to yield iodide.
The electrons that pass through the external load reduce the triodide to yield iodide.
Consider an organic solar cell consisting of a TiO 2 semiconductor with an ionization energy of 7.8 eV and a
polymer with an electron affinity of 3.4 eV. The bandgap of TiO 2 is 3.5 eV.
Which of the band diagrams in Figure 13.32 corresponds to the organic solar cell?
What is the driving force for electron injection from the polymer to the semiconductor?
The electron diffusion coefficient is D n = 4 × 10 −5 cm 2 /s and the thickness of the TiO 2 layer is 4 μm.
What is the lifetime of the injected electrons?
A.
B.
C.
(a)
(b)
(c)
(d)
13.10
A.
B.
C.
(a)
(b)
(c)
(d)
13.11
13.12
(a)
(b)
(c)
(d)
13.13
(a)
(b)
(c)
(d)
13.14
(a)
(b)
(c)
layer.
What are the demonstrated advantages of CdTe technologies for solar cells?
Low cost potential.
Recycling of materials for further use.
High module efficiencies in reference to crystalline silicon wafer-based modules.
Only A.
Only C.
Both A and B.
Both A and C.
What are the known disadvantages of CdTe materials used in solar cells?
Cd is a toxic element.
Not possible to recycle the materials.
Te is not abundantly available which limits the possibility of scaling up.
Only A.
Only C.
Both A and B.
Both A and C.
A First Solar module FS-380 has the following specifications: Area A = 0.72 m 2 , nominal power P nom = 80.0
W, V oc = 61.7 V, I sc = 1.76 A, V MPP = 50.7 V, I MPP = 1.58 A. What is the efficiency of this module under STC?
In dye-sensitized solar cells (DSSC) the absorption of photons occurs in …
… the wide bandgap of the semiconductor TiO 2 .
… the dye.
… the electrolyte.
… the platinum/TCO contact.
Which statement about DSSCs is true?
The electrons that pass through the external load oxidize the iodide to yield triodide.
The electrons that pass through the external load reduce the iodide to yield triodide.
The electrons that pass through the external load oxidize the triodide to yield iodide.
The electrons that pass through the external load reduce the triodide to yield iodide.
Consider an organic solar cell consisting of a TiO 2 semiconductor with an ionization energy of 7.8 eV and a
polymer with an electron affinity of 3.4 eV. The bandgap of TiO 2 is 3.5 eV.
Which of the band diagrams in Figure 13.32 corresponds to the organic solar cell?
What is the driving force for electron injection from the polymer to the semiconductor?
The electron diffusion coefficient is D n = 4 × 10 −5 cm 2 /s and the thickness of the TiO 2 layer is 4 μm.
What is the lifetime of the injected electrons?