Factors Affecting the Power Conversion Efficiency in ZnO DSSCs: Nanowire vs. Nanoparticles
Abstract
:1. Introduction
2. Methodology
2.1. ZnO Nanoparticle Films
2.2. ZnO Nanowire Arrays
2.3. Film Sensitization-Assessment of Dye Loading and of the Point of Zero Charge
2.4. DSSC Fabrication
2.5. Device Characterization and Testing
3. Results and Discussion
3.1. Film Morphology
3.2. Photovoltaic Characteristics
3.3. Dye Loading
3.4. Nanowire DSSCs with Improved Dye Loading
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Sample Type Header | Voc (V) | Jsc (mA/cm2) | FF | η (%) |
---|---|---|---|---|
Nanoparticles | 0.70 ± 0.02 | 11.2 ± 1.0 | 0.54 ± 0.06 | 6.19 ± 0.60 |
Nanowires | 0.62 ± 0.03 | 1.2 ± 0.4 | 0.53 ± 0.04 | 0.63 ± 0.09 |
Nanowires with improved dl | 0.64 ± 0.02 | 4.8 ± 0.4 | 0.41 ± 0.03 | 1.80 ± 0.20 |
Sample Code | Seed Layer | Growth Conditions | |
---|---|---|---|
a | 0.05 M Zinc acetate in ethanol | 0.04 M Zn(NO3)2 0.02 M HMTA 0.16 M PEI 0.04 M NH4OH | Without renewal |
b | 0.04 M Zn(NO3)2 0.02 M HMTA 0.16 M PEI 0.04 M NH4OH | With renewal | |
c | 0.005 M Zinc acetate in ethanol | 0.05 M Zn(NO3)2 0.025 M HMTA 0.08 gr PEI 0.7 M NH4OH | Without renewal |
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Giannouli, M.; Govatsi, Κ.; Syrrokostas, G.; Yannopoulos, S.N.; Leftheriotis, G. Factors Affecting the Power Conversion Efficiency in ZnO DSSCs: Nanowire vs. Nanoparticles. Materials 2018, 11, 411. https://doi.org/10.3390/ma11030411
Giannouli M, Govatsi Κ, Syrrokostas G, Yannopoulos SN, Leftheriotis G. Factors Affecting the Power Conversion Efficiency in ZnO DSSCs: Nanowire vs. Nanoparticles. Materials. 2018; 11(3):411. https://doi.org/10.3390/ma11030411
Chicago/Turabian StyleGiannouli, Myrsini, Κaterina Govatsi, George Syrrokostas, Spyros N. Yannopoulos, and George Leftheriotis. 2018. "Factors Affecting the Power Conversion Efficiency in ZnO DSSCs: Nanowire vs. Nanoparticles" Materials 11, no. 3: 411. https://doi.org/10.3390/ma11030411