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Core/CdS Quantum Dot/Shell Mesoporous Solar Cells with Improved Stability and Efficiency Using an Amorphous TiO2 Coating
Abstract
Here we present a CdS quantum dot sensitized solar cell based on a mesoporous TiO 2 film with remarkable stability using I − /I 3 − electrolyte. Chemical Bath Deposition (CBD) was used to deposit the CdS quantum dots within the porous network. We show that a thin coating of the QD sensitized film with an amorphous TiO 2 layer strongly improves the performance and photostability of the solar cell. We propose that the coating passivates QD surface states which act as hole traps and are responsible for photodegradation of the device. In addition, this coating decreases the recombination of electrons from the CdS quantum dots and the mesoporous TiO 2 into the electrolyte solution. We obtain a significant improvement of all cell parameters resulting in a total light to electric power conversion efficiency of 1.24%.
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Characterization of nanostructured hybrid and organic solar cells by impedance spectroscopy
Fabregat-Santiago, F., Garcia-Belmonte, G., Mora-Seró, I., & Bisquert, J. (2011) · Physical Chemistry Chemical Physics · doi:10.1039/c0cp02249g · Cited by 1,206
Recombination in Quantum Dot Sensitized Solar Cells
Mora-Seró, I., Giménez, S., Fabregat-Santiago, F., Gómez, R., Shen, Q., Toyoda, T., & Bisquert, J. (2009) · Accounts of Chemical Research · doi:10.1021/ar900134d · Cited by 783
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Jun, H. K., Careem, M. A., & Arof, A. K. (2013) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2013.01.030 · Cited by 373
PbS as a Highly Catalytic Counter Electrode for Polysulfide-Based Quantum Dot Solar Cells
Tachan, Z., Shalom, M., Hod, I., Rühle, S., Tirosh, S., & Zaban, A. (2011) · The Journal of Physical Chemistry C · doi:10.1021/jp112010m · Cited by 301
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Metadata
- Authors
- Shalom, M., Dor, S., Rühle, S., Grinis, L., & Zaban, A.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-02-06
- Volume
- 113
- Issue
- 9
- Pages
- 3895-3898
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2138366829
- Cited by
- 248
- References
- 0
- FWCI
- 13.40
- Type
- journal article
- Language
- en
- Open access
- closed
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