Journal of Inorganic Materials, Volume. 34, Issue 2, 137(2019)
Photovoltaic Performance of Ag2Se Quantum Dots Co-sensitized Solid-state Dye-sensitized Solar Cells
Figures & Tables(12)
. (a)Transmission electron microscope (TEM) image, (b) size distribution histogram, (c) HRTEM image, and (d) zoom-in HRTEM image of the Ag2Se quantum dots
. (a) Absorption spectrum and (b) corresponding Tauc plot of the Ag2Se quantum dots in ethanol solution
. (a) UV-Vis spectra of photoanodes with different Ag2Se QDs sensitization methods with inset showing photographs of photoandes, and (b) J-V curve of DSSCs with different sensitization methods
. (a) Device structure and (b) energy level diagram of solid-state Ag2Se QDs and dye co-sensitized solar cell
. (a) UV-Vis absorption spectra of Ag2Se QDs sensitized, N719 sensitized and Ag2Se QDs/N719 co-sensitized photoanodes, and (b) UV-Vis absorption spectra of photoanodes with different sensitization time of Ag2Se QDs
. J-V curves of pure Ag2Se quantum dot sensitized solar cell and co-sensitized solar cells with different Ag2Se QDs sensitization time
. (a) Electrochemical impedance plots of co-sensitized solar cells with different Ag2Se QDs sensitization time with inset showing the equivalent circuit, and (b) the recombination resistance R 2 of DSSCs as a function of different Ag2Se QDs sensitization time
. (a) IMPS and (b) IMVS plots of co-sensitized solar cells with different Ag2Se QDs sensitization time
Table 1. Photovoltaic parameters of DSSCs with different sensitized methods
View tableView in ArticleTable 1. Photovoltaic parameters of DSSCs with different sensitized methods
Sample Jsc/(mA∙cm-2) Voc/V FF ƞ/% TiO2/dye 8.78 0.69 0.50 2.96 TiO2/dye/QDs 8.08 0.71 0.48 2.74 TiO2/QDs/dye 9.18 0.74 0.53 3.59
Table 2. Photovoltaic parameters of co-sensitized solar cells with different Ag2Se QDs sensitization time
View tableView in ArticleTable 2. Photovoltaic parameters of co-sensitized solar cells with different Ag2Se QDs sensitization time
Sample Jsc/(mA∙cm-2) Voc/V FF ƞ /% TiO2/QDs(2 h) 0.44 0.41 0.55 0.10 TiO2/dye 8.78 0.69 0.50 2.96 TiO2/QDs(1 h)/dye 9.18 0.74 0.53 3.59 TiO2/QDs(2 h)/dye 9.53 0.75 0.55 3.97 TiO2/QDs(3 h)/dye 9.46 0.73 0.55 3.82 TiO2/QDs(4 h)/dye 8.69 0.75 0.56 3.68 TiO2/QDs(5 h)/dye 7.69 0.74 0.55 3.10
Table 3. IMPS/VS kinetic parameters of co-sensitized solar cells with different Ag2Se QDs sensitization time
View tableView in ArticleTable 3. IMPS/VS kinetic parameters of co-sensitized solar cells with different Ag2Se QDs sensitization time
Sample τd/ms τc/ms Dn/
(cm2·s-1)Ln/μm ηcc TiO2/dye 31.77 8.45 7.25 15.18 0.73 TiO2/QDs(1 h)/dye 33.65 8.45 7.25 15.62 0.75 TiO2/QDs(2 h)/dye 42.37 7.98 7.68 18.04 0.81 TiO2/QDs(3 h)/dye 42.37 8.45 7.25 17.52 0.80 TiO2/QDs(4 h)/dye 31.77 7.53 8.14 16.07 0.76 TiO2/QDs(5 h)/dye 23.83 8.45 7.25 13.14 0.65
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Ying YANG, De-Qun PAN, Zheng ZHANG, Tian CHEN, Xiao-Min HAN, Li-Song ZHANG, Xue-Yi GUO, [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Photovoltaic Performance of Ag2Se Quantum Dots Co-sensitized Solid-state Dye-sensitized Solar Cells[J]. Journal of Inorganic Materials, 2019, 34(2): 137
Paper Information
Category: Research Articles
Received: May. 17, 2018
Accepted: --
Published Online: Sep. 24, 2021
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