1. Dye-Sensitized Solar Cells
Presented by: Helen Cuiyun Zhao

2. Outline Background of Dye-sensitized Solar Cells (DSSCs)
Synthesis of Ruthenium dye-sensitizer
Characterization in photo-electrochemistry
Development of DSSC Modules
12 Principles of Green Chem.
Conclusion

3. Irradiation of the Sun
Chem. Rev. 2010, 110, 6595–6663

4. Composition of DSSC The DSSC device consists of 4 components:
semiconducting electrode
n-type TiO2 and p-type NiO
Dye-sensitizer
Light harvesting and electronic transition
Redox mediator
I- / I3- or CoII / CoIII complexes
Counter electrode
Carbon or Pt
Chem. Rev. 2010, 110, 6595–6663

5. Dye-sensitizers

6. Mechanism

7. Energy Levels of DSSC
Chem. Rev. 2010, 110, 6595–6663

10. Synthesis
DMF
JK-206
Bpy ligand
RuCl2 dimer CNN ligand
DMF
JK-207

11. Light Harvesting — UV-vis spectroscopy

12. Excited state chemistry -Density Functional Theory
LUMO +2
LUMO +1
LUMO
HOMO
HOMO +1
JK JK-207

13. Electrochemistry

14. Validation of DSSC Dye λ abs (nm), ε (M-1cm-1) Jsc (mA cm2) Voc FF
η (%)
JK-206
391 (19800), 527 (18000)
19.63
0.74
0.72
10.39
JK-207
368 (38700), 530 (16800)
13.83
0.69
0.66
6.32
N-719
380 (13100), 520 (1300)
18.79
0.75
0.7
9.8

15. Development of DSSC
 Flexible DSSC Module
Glass-based DSSC Module 

16. Homemade DSSC

17. 12 Principles of Green Chem.

18. Conclusion
DSSCs show the most promising future due to their independence, environmentally friendly, low maintenance, and low cost .
A solar energy system can be installed in any location without a connection to a power grid.
The initial investment is expensive. Once the use of electricity reaches to a certain point, the solar energy is free.
After installation, there is no recurring cost and it can be used for a long time.

19. Thank You!