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The inverted polymer solar cell (PSC) based on a sol–gel derived zinc oxide (ZnO) thin film as an electron selective layer is investigated. The device performance is improved after the fabricated device is placed in air for a few days. The improvement is attributed to the self-organization of the poly(3-hexylthiophene)/[6,6]-phenyl-C 61 -butyric acid methyl ester layer and oxidation of the...
Solution-processed vanadium oxide (V 2 O 5 ) as an anode interlayer is introduced between the organic layer and the Ag electrode for improving the performance of the low-cost inverted polymer solar cells hybridized with ZnO nanorods. Our investigations indicate that the solution-processed V 2 O 5 interlayer as an electron-blocking layer can effectively prevent the leakage...
One approach to improve device stability is using polymer/ZnO nanorod hybrid solar cell. In our solar cell, the interface of ITO/PEDOT:PSS can be avoided by employing ZnO nanorod using a hydrothermal method and the low-work-function metal Al can be replaced by Ag. ZnO nanorod is used as an excellent electron selective layer and Ag has the nature of less air sensitivity.
The inverted bulk hetero-junction solar cell on the polyester (PET) substrate with a non-annealing active layer is investigated. Our investigations show that the easily processed inverted device with a non-annealing active layer on the indium-tin-oxide coated PET substrate exhibits a high power conversion efficiency of ~3.65%.
Correlation between the power conversion efficiency and dimethyl sulfoxide (DMSO) modified poly (3,4-ethylene dioxythiophene): poly(styrene sulfonate) (PEDOT:PSS) of polymer solar cells is studied. The PEDOT:PSS is modified by adding process additive (DMSO) during processing. However, highly conductive DMSO-PEDOT:PSS leads to tremendous errors in the measurement of the polymer solar cells. Our investigations...
A solution-processed vanadium oxide interlayer is introduced between the organic layer and the electrode for improving the performance of the polymer/ZnO nanorod hybrid solar cells. The results indicate that the vanadium oxide interlayer can serve as an electron-blocking layer to suppress the leakage current and an optical spacer to increase light absorption. As a result, the power conversion efficiency...
The slow drying of the photoactive layer in polymer/ZnO nanorod hybrid solar cells is studied as a way to improve device performance. The power conversion efficiency can be further improved to 3.05% with an enhanced fill factor of 55% by slowing the spin coating rate of photoactive layer. With the slower spin coating rate, the films of photoactive layer are thicker, and the polymer chains have longer...
Organic-inorganic hybrid solar cells as low-cost renewable energy sources have attracted great attention due to the possibility of fabricating them on large-area, light-weight, flexible substrates by printing and coating technologies. Hashimoto et al. investigated the performance dependence of poly(3-hexylthiophene) (P3HT): (6,6)-phenyl C61 butyric acid methyl ester (PCBM)/ZnO hybrid solar cells on...
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